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ABSTRACT Objective: To identify and characterize the population of Pediatric patients referred to our hyperbaric oxygen therapy center. Methods: Retrospective and observational study, including pediatric patients treated with hyperbaric oxygen therapy, from 2006 to 2021, at the hyperbaric medicine reference center in the north of Portugal. Variables of interest were extracted from electronic medical records. Results: Our study included 134 patients. The most frequent reasons for referral were carbon monoxide poisoning (n=59) and sudden sensorineural hearing loss (n=41). In 75 cases (56%), treatment was initiated in an urgent context. Symptom presentation at Emergency Department varied among patients, the most frequent being headache and nausea/vomiting. Concerning carbon monoxide poisoning, the most common sources were water heater, fireplace/brazier, and boiler. Regarding adverse effects, it was identified one case of intoxication by oxygen and four cases of middle ear barotrauma. Conclusions: The most frequent cause for referral was carbon monoxide poisoning. All patients evolved favorably, with few side effects being reported, emphasizing the safety of this therapy. While most pediatricians may not be aware of the potential benefits arising with hyperbaric oxygen therapy, it is of upmost importance to promote them, so that this technique is increasingly implemented.

RESUMO Objetivo: Identificar e caracterizar a população de casos pediátricos encaminhados para o nosso centro de oxigenoterapia hiperbárica. Métodos: Estudo retrospetivo e observacional, que incluiu doentes pediátricos tratados com oxigenoterapia hiperbárica, de 2006 a 2021, no centro de referência de medicina hiperbárica do norte de Portugal. As variáveis de interesse foram extraídas dos processos clínicos eletrônicos. Resultados: O nosso estudo incluiu 134 casos. Os motivos de encaminhamento mais frequentes foram intoxicação por monóxido de carbono (n=59) e surdez súbita neurossensorial (n=41). Em 75 casos (56%) o tratamento foi iniciado em contexto de urgência. Os sintomas de apresentação à admissão variaram entre os diferentes casos, sendo os mais frequentes cefaleias e náuseas/vômitos. No que diz respeito à intoxicação por monóxido de carbono, as fontes mais comuns foram o aquecedor, lareira/braseiro e caldeira. Com relação aos efeitos adversos, foram identificados um caso de intoxicação por oxigênio e quatro casos de barotrauma do ouvido médio. Conclusões: A causa mais frequente de encaminhamento foi a intoxicação por monóxido de carbono. Todos os pacientes evoluíram favoravelmente e foram registrados poucos efeitos adversos, o que enfatiza a segurança desta terapia. Uma vez que a maioria dos pediatras pode não estar informada sobre os potenciais benefícios da oxigenoterapia hiperbárica, é de extrema importância promovê-los para que esta técnica seja cada vez mais implementada.

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Las úlceras de pie diabético afectan alrededor del 20 % de los pacientes. Estas afectan la calidad de vida e incrementan el riesgo de mortalidad, como principales complicaciones. El tratamiento actual incluye la utilización de medicamentos y la desbridación quirúrgica del tejido ulcerado. Dentro de sus terapias coadyuvantes se destaca el uso de la oxigenoterapia hiperbárica que reduce el riesgo de sus complicaciones. Por esto se busca describir el uso de la oxigenoterapia hiperbárica como coadyuvante en el tratamiento de pie diabético. Por lo tanto, se realizó una revisión bibliográfica utilizando bases de datos: PubMed, Elsevier, SciELO, y en los idiomas español e inglés, publicados entre 2018 y 2023. La oxigenoterapia hiperbárica consiste en colocar al paciente en un entorno de mayor presión, con concentraciones de oxígeno cercanas al 100 %, resultando en efectos antiinflamatorios. El abordaje del pie diabético debe ser multidisciplinario con el fin de lograr una pronta recuperación, incluyendo abordaje farmacológico dando manejo al dolor neuropático y a la curación de las infecciones. La oxigenoterapia hiperbárica se ha considerado como tratamiento coadyuvante al aumentar el porcentaje de curación completa a un 33,3 %, facilitando la curación, aumentando y reduciendo el dolor percibido. Se concluye que efectivamente existen publicaciones que respaldan el uso de la oxigenoterapia hiperbárica adicional a la terapéutica convencional ya que mejora la tasa de curación y reduce el riesgo de amputaciones mayores

Diabetic foot ulcers affect about 20 % of patients. They affect the quality of life and increase the risk of mortality, as main complication. Treatment currently includes the use of drugs and surgical debridement of the ulcerated tissue. Among its coadjuvant therapies, the use of hyperbaric oxygen therapy stands out as it reduces the risk of complications. This study seeks to describe the use of hyperbaric oxygen therapy as an adjuvant in the treatment of diabetic foot. A literature review was conducted using databases: PubMed, Elsevier, SciELO, and in Spanish and English languages, published between 2018 and 2023. Hyperbaric oxygen therapy consists of placing the patient in a higher-pressure environment, with oxygen concentrations close to 100 %, resulting in anti-inflammatory effects. The approach to the diabetic foot should be multidisciplinary in order to achieve early recovery, including a pharmacological approach to manage neuropathic pain and cure infections. Hyperbaric oxygen therapy has been considered as a coadjuvant treatment by increasing the percentage of complete healing to 33.3 %, facilitating healing, increasing and reducing the perceived pain. It concluded that there are publications that support the use of hyperbaric oxygen therapy in addition to conventional therapy, because it improves the healing rate and reduces the risk of major amputations

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La oxigenoterapia hiperbárica (OHB) puede mejorar la cicatrización de las heridas. La hipoxia, la alteración de la angiogénesis y la inflamación prolongada son condiciones constantes que la OHB favorece su reversibilidad; hace ya muchos años que, en el listado de indicaciones reconocidas por Sociedades Científicas que rigen esta práctica, se encuentra como indicación aceptada para el tratamiento coadyuvante en injertos o colgajos en riesgo isquémico, como también en heridas refractarias; en la última década, paulatinamente, con la difusión y el aumento de las facilidades para acceder a equipos hiperbáricos, las indicaciones se extendieron al área de la cirugía plástica, para tratamiento de complicaciones posoperatorias en tejidos isquémicos o necrosados y también para preacodicionamiento preoperatorio y sostén posoperatorio de cierto grupo de pacientes con mayor riesgo de sufrir una complicación, en las lipotransferencias como coadyuvante para aumento de la preservación de una mayor cantidad de tejido graso. Las publicaciones al respecto son cada día más frecuentes, algunas presentan un pequeño número de casos, otras son estudios de cohorte retrospectivos, con un nivel de evidencia elevado. El objetivo de este artículo es presentar el concepto básico de los efectos de la OHB, referencia al estado actual de las distintas indicaciones en uso en cirugía plástica y medicina cosmética y la experiencia personal al respecto.

Hyperbaric oxygen therapy (HOT) can improve wound healing, hypoxia, alteration of angiogenesis and prolonged infl ammation are constant conditions that HOT favors its reversibility for many years now, in the list of indications recognized by Scientifi c Societies. that govern this practice, is a recognized indication for adjuvant treatment in grafts or fl aps at ischemic risk, as well as in refractory wounds; In the last decade, gradually, with the dissemination and increase in the facilities to access hyperbaric equipment, the indications were extended to the area of plastic surgery, for the treatment of post-operative complications in ischemic or necrotic tissues as well as for preconditioning. operative and post-operative support of a certain group of patients with a higher risk of suff ering a complication, in lipotransferences as an adjuvant to increase the preservation of a greater amount of fatty tissue. Publications in this regard are becoming more frequent every day, some present a small number of cases, others are retrospective cohort studies, with a high level of evidence. The objective of this article is to present the basic concept of the eff ects of HOT, reference to the current state of the diff erent indications in use in plastic surgery, and cosmetic medicine and personal experience in this regard

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BACKGROUND AND OBJECTIVES: Self-reported psychological variables related to pain have been posited as the major contributors to the quality of life of fibromyalgia (FM) women and should be considered when implementing therapeutic strategies among this population. The aim of this study was to explore the effect of low-pressure hyperbaric oxygen therapy (HBOT) on psychological constructs related to pain (i.e., pain catastrophism, pain acceptance, pain inflexibility, mental defeat) and quality of life in women with FM. METHODS: This was a randomized controlled trial. Thirty-three women with FM were randomly allocated to a low-pressure hyperbaric oxygen therapy group (HBOTG) (n=17), who received an 8-week intervention (5 sessions per week), and a control group (CG) (n=16). All women were assessed at baseline (T0) and upon completion of the study (T1) for self-perceived pain intensity, pain catastrophism, pain acceptance, pain inflexibility, mental defeat and quality of life. RESULTS: At T1, the HBOTG improved across all variables related to pain (i.e. self-perceived pain intensity, pain catastrophism, pain acceptance, pain flexibility, mental defeat) (p<0.05) and quality of life (p<0.05). In contrast, the CG showed no improvements in any variable. Furthermore, significant differences between the groups were found in quality of life (p<0.05) after the intervention. CONCLUSIONS: HBOT is effective at improving the psychological constructs related to pain (i.e. pain catastrophism, pain acceptance, pain flexibility, mental defeat) and quality of life among women with FM. Clinical Trial Link Clinical Trials gov identifier (NCT03801109).

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Reportamos los dos primeros casos, en Perú, sobre el uso del tratamiento con oxigeno hiperbárico coadyuvante (TOHC) en pacientes con mucormicosis asociado a COVID-19 (MAC). El primer caso es una mujer de 41 años, con dolor en hemicara y región palatina izquierdas con rinorrea purulenta de un mes de evolución. Al examen físico, solo evidencia fístula oroantral. El segundo caso se trata de un varón de 35 años, con disminución de agudeza visual izquierda y dolor palatino con fístula que drena secreción purulenta de cuatro meses de evolución. Ambos pacientes tienen el antecedente de diabetes, tuvieron COVID-19 moderado cuatro meses antes del ingreso, y recibieron corticoterapia por este diagnóstico. Ambos pacientes tuvieron una evaluación tomográfica que mostró compromiso del seno maxilar y tejido óseo circundante, con endoscopia nasal diagnóstica y terapéutica para desbridamiento. Se obtuvieron muestras compatibles con mucormicosis en estudio histológico. Los pacientes fueron tratados con limpieza quirúrgica y anfotericina B desoxicolato, sin embargo, presentaron evoluciones tórpidas. Por lo tanto, se adicionó la TOHC y mostraron una mejoría evidente tras cuatro semanas de tratamiento con controles subsiguientes sin presencia de mucormicosis. Resaltamos la evolución de estos pacientes con TOHC, en una enfermedad con importante morbimortalidad, que ha sido emergente durante la pandemia.

We present the first two cases reported in Peru of the use of adjuvant hyperbaric oxygen therapy (HBOT) in patients with COVID-19-associated mucormycosis (CAM). The first case is a 41-year-old woman, with pain in the left side of the face and palatine region with purulent rhinorrhea for a month. Only an oroantral fistula was found during physical examination. The second case is a 35-year-old male, with decreased left visual acuity and palatal pain with a fistula, draining purulent secretion for four months. Both patients have history of diabetes, had moderate COVID-19 four months prior to admission, and received corticosteroid therapy for this diagnosis. Tomographic evaluation of both patients showed involvement of the maxillary sinus and surrounding bone tissue; both received diagnostic and therapeutic nasal endoscopy for debridement. Histological analysis showed that the samples were compatible with mucormycosis. The patients underwent debridement and were treated with amphotericin B deoxycholate; however, they presented torpid evolution. Then, HBOT was added and the patients showed an evident improvement after four weeks of treatment with subsequent controls without the presence of mucormycosis. We highlight the favorable evolution of these patients while receiving HBOT as treatment for a disease with high morbimortality, which emerged during the pandemic.

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Resumen En la terapia con oxígeno hiperbárico (HBO) se utiliza oxígeno al 100% de concentración en una cámara presurizada con presiones supraatmosféricas, que corresponden de 2 a 3 atmósferas. Los mecanismos por los cuales funciona esta terapia se relacionan con propiedades físicas de los gases y su comportamiento fisiológico en el organismo, lo que lleva finalmente a la hiperoxia, evento fisiológico que permite la obtención de diversos efectos beneficiosos. La evidencia en medicina ha demostrado su utilidad mayormente en la enfermedad por descompresión, infecciones cutáneas graves e intoxicación por monóxido de carbono. En el ámbito de la otorrinolaringología ha probado ser útil en algunas enfermedades como la hipoacusia súbita idiopática, tanto como terapia única como asociada al uso de corticosteroides, como en la osteomielitis refractaria del oído externo, la que en conjunto con antibioticoterapia y manejo quirúrgico presenta un evidente aumento en la tasa de mejoría. Cabe mencionar que la terapia con HBO ha demostrado también beneficios en los tratamientos y complicaciones posteriores a la radiación en pacientes con cáncer de cabeza y cuello. Es importante mencionar que la terapia con HBO no está exenta de riesgos y requiere que los pacientes cumplan con características específicas para su utilización, por lo que su indicación debe ser juiciosa y en casos seleccionados.

Abstract In hyperbaric oxygen therapy, 100% pure oxygen is used in a pressurized chamber with super atmospheric pressures which correspond to 2-3 atmospheres. The mechanism by which this treatment works is related to the physical properties of gases and their physiological behavior in the body, which leads to hyperoxia, the physiological event which allows for diverse beneficial health effects. The evidence in medicine has proven its utility mainly in decompression sickness, severe skin infections and carbon monoxide poisoning. In the otolaryngology field it has been proven useful in diseases like idiopathic sudden sensorineural hearing loss, both as the only treatment and as a concurrent treatment along with corticosteroids, in malignant otitis externa which in conjunction with antibiotic treatment and a surgical approach presents a clear increase in improvement rates. It must be mentioned that hyperbaric chamber treatment has also shown benefits in radiation treatment and post radiation complications in head and neck cancer patients. It is important to note that hyperbaric oxygen therapy is not without risks and patients must meet specific criteria for it to be applied, therefore it must be indicated using careful judgement and only in necessary cases.

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Hyperbaric Oxygen Therapy (HBOT) assumes that high pressure hyperoxygenation causes faster tissue recovery and wound healing. Lower extremity flow rates are affected by leg ulcers that change vasodilation, microcirculation resistance, and local tissue demands; how blood hyper oxygenation influences these factors is still unclear. Peripheral arterial occlusive disease (PAOD) has been mostly associated with HBOT results in the femoral artery than in other arteries. Common femoral artery (CFA) peak systolic velocities (PSV), measured pre and post HBOT, were analyzed to research HBOT hemodynamics. Sixteen patients with leg ulcers who were 65 ± 11 (SD) (38-87) years-old, had HBOT of 90 minutes at 2.6 ATA. Bilateral CFA Doppler velocity waveforms were recorded immediately pre and post HBOT. Ulcerated vs non-ulcerated peak systolic velocity (PSV) data were compared using paired t-test. CFA PSV were significantly equal in the ulcerated and non-ulcerated extremities before HBOT: 114 ± 35 (SD) cm/s vs 116 ± 41 cm/s (p = 0.87 by paired t-test). CFA PSV in the ulcerated extremity increased to 122 ± 35 cm/s after HBOT but were statistically insignificant (p =.19 by one-tailed paired t-test). On the other hand, CFA PSV decreased to 103 ± 28 cm/s (p =.049 by one-tailed paired t-test) in the non-ulcerated extremity and were significantly lower after HBOT, with 103 ± 28 cm/s vs 122 ± 35 cm/s for the ulcerated limb (p =.02 by paired t-test). Blood velocity responses post HBOT showed differences between ulcerated vs non-ulcerated extremities. The non-ulcerated extremity apparently responded to oxygenation more than the ulcerated extremity. Such observation suggests further research on hemodynamic reactions caused by HBOT.

A oxigenoterapia hiperbárica (HbOT) assume que a oxigenação de alta pressão resulta em mais celeridade na recuperação do tecido e na cicatrização de feridas. As taxas de fluxo nas extremidades inferiores são afetadas por úlceras nas pernas que alteram a vasodilatação, a resistência da microcirculação e as demandas locais de tecido; esses fatores podem ser influenciados pela hiperoxigenação sanguínea de maneiras ainda não claramente compreendidas. A doença arterial oclusiva periférica femoral (DAOP) tem sido associada a melhores resultados de HBOT quando comparada a outras artérias. As velocidades sistólicas de pico (PSV) da artéria femoral comum (CFA) medidas antes e depois da HBOT foram analisadas como parte de um projeto de pesquisa da hemodinâmica da HBOT. Dezesseis pacientes com úlceras de perna, com idade 65 ± 11 (DP), 38-87 anos, realizaram HBOT com duração de 90 minutos a 2,6 ATA. As formas de onda de velocidade do Doppler CFA bilateral foram registradas imediatamente antes e depois da HBOT. Os dados de PSV ulcerado vs. não ulcerado foram comparados usando o teste t pareado. Pre HBOT CFA PSV não foi significativamente diferente nas extremidades ulceradas e não ulceradas: 114 ± 35 (DP) cm/s vs 116 ± 41 cm/s (p = 0,87 pelo teste t pareado). O PSV pós HbOT CFA na extremidade ulcerada aumentou para 122 ± 35 cm/s, mas não atingiu significância estatística (p = 0,19 pelo teste t pareado unicaudal). Em contraste, CFA PSV na extremidade não ulcerada diminuiu para 103 ± 28 cm/s (p = 0,049 pelo teste t pareado unicaudal). O pós-HbOT CFA PSV foi significativamente menor no membro não ulcerado, 103 ± 28 cm/s vs 122 ± 35 cm/s para o membro ulcerado (p = 0,02 pelo teste t pareado). As respostas da velocidade do sangue após HbOT mostraram diferenças entre as extremidades ulceradas e não ulceradas. Aparentemente, a extremidade não ulcerada respondeu mais significativamente à oxigenação do que a extremidade ulcerada. Tal observação sugere pesquisas adicionais sobre as reações hemodinâmicas decorrentes da HbOT.

La terapia de oxígeno hiperbárico (HbOT) asume que la hiperoxigenación a alta presión da como resultado una recuperación más rápida de los tejidos y una cicatrización de heridas. Las tasas de flujo de las extremidades inferiores se ven afectadas por úlceras en las piernas que alteran la vasodilatación, la resistencia de la microcirculación y las demandas de los tejidos locales; estos factores pueden verse influenciados por la hiperoxigenación de la sangre, de formas que aún no se han entendido con claridad. La enfermedad oclusiva arterial periférica femoral (PAOD) se ha relacionado con los mejores resultados de HbOT que otras arterias. Las velocidades sistólicas máximas (PSV) de la arteria femoral común (CFA) medidas antes y después de la HbOT se analizaron como parte de un proyecto para investigar la hemodinámica de la HbOT. Dieciséis pacientes con úlceras en pierna, 65 ± 11 (DE) (38-87) años, 12 hombres, 11 diabéticos, tenían HbOT de 90 minutos a 2,6 ATA. Se registraron formas de onda de velocidad de CFA Doppler bilaterales inmediatamente antes y después de la HbOT. Se compararon los datos de la velocidad sistólica máxima (PSV) ulcerada frente a la no ulcerada mediante la prueba t pareada. Pre HbOT CFA PSV no fue significativamente diferente en las extremidades ulceradas y no ulceradas: 114 ± 35 (DE) cm/s vs 116 ± 41 cm/s (p = 0,87 por prueba t pareada). Post HbOT CFA PSV en la extremidad ulcerada aumentó a 122 ± 35 cm/s pero no alcanzó significación estadística (p =.19 por prueba t unilateral pareada). En contraste, CFA PSV en la extremidad no ulcerada disminuyó a 103 ± 28 cm/s (p =.049 por prueba t unilateral pareada). El PSV después de la HbOT CFA fue significativamente menor en la extremidad no ulcerada, 103 ± 28 cm/s frente a 122 ± 35 cm/s para la extremidad ulcerada (p = 0,02 según la prueba t pareada). Las respuestas de velocidad sanguínea post HbOT mostraron diferencias entre las extremidades ulceradas y no ulceradas. Aparentemente, la extremidad no ulcerada respondió más significativamente a la oxigenación que la extremidad ulcerada. Tal observación sugiere una mayor investigación sobre las reacciones hemodinámicas debidas a la HbOT.

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Hyperbaric oxygenation (HBO2) is a successful treatment of diabetic foot ulcerations. Research on the characterization of tissue by ultrasonography (CATUS) or by imaging (CATIM) has grown. We investigated the photographic pCATIM feasibility to quantitate HBO2 effects. Besides, we analyzed pre and post HBO2 treatment photographs quantitatively based on pixel brightnesses of gray-scale imaging versions. Grayscale Medians (GSM) for (1) entire ulceration, (2) inner core, (3) ulceration border, and (4) adjacent skin decreased from 92 to 77, 60 to 56, 105 to 101, and 105 to 90. Entire ulceration post-HBO2 pixel percentages were lower in the 112-153 intervals, 11% vs 29% (p = .0013 by Chi-square), and higher in the 41-111 brightness range, 87% vs 68% (p = .0008). A case report showed quantifiable relative changes detected by pCATIM post HBO2 treatment of diabetic foot ulceration. Further investigation may quantify brightness variabilities and/or specific GSM for ulceration and skin regions.

A oxigenioterapia hiperbárica (HBO2) tem sido um tratamento de sucesso para úlceras do pé diabético, enquanto cresce o número de pesquisas caracterizando o tecido por meio de ultrassonografia (Catus) ou imagem (Catim) ­ sendo que a pCatim torna viável quantificar os efeitos da oxigenioterapia hiperbárica. Fotografias do pré e pós tratamento foram analisadas quantitativamente com base em brilhos de pixel de versões de imagens em escala de cinza. Houve redução das medianas da escala de cinza (gray scale medians ­ GSM) para (1) ulceração inteira, de 92 para 77; (2) núcleo interno, de 60 para 56; (3) borda da ulceração, de 105 para 101; e (4) pele adjacente, de 105 para 90. Na úlcera completa, após a HBO2, as porcentagens de pixels foram menores nos intervalos 112-153 (11% contra 29%, p = 0,0013 por qui-quadrado) e maiores na faixa de brilho 41-111 (87% contra 68%, p = 0,0008). Um relato de caso demonstrou mudanças relativas quantificáveis detectadas por pCatim após o tratamento com HBO2 de uma úlcera do pé diabético, e investigações mais aprofundadas podem quantificar as variabilidades de brilho e/ou GSM específicas para cada ulceração e regiões da pele.

La oxigenación hiperbárica (HBO2) ha sido un tratamiento exitoso de las ulceraciones del pie diabético. Ha crecido la investigación sobre la caracterización de tejidos por ecografía (CATUS) o por imágenes (CATIM). Se investigó la viabilidad fotográfica de pCATIM para cuantificar los efectos de HBO2. Las fotografías anteriores y posteriores al tratamiento con HBO2 se analizaron cuantitativamente en función del brillo de los píxeles de las versiones de imágenes en escala de grises. Medianas de escala de grises (GSM) para (1) ulceración completa, (2) núcleo interno, (3) borde de ulceración y (4) piel adyacente disminuyeron de 92 a 77, 60 a 56, 105 a 101 y 105 a 90, respectivamente. En la ulceración completa, después de HBO2, los porcentajes de píxeles fueron más bajos en los intervalos 112-153, 11% vs 29% (p = .0013 por Chi-cuadrado) y más altos en el rango de brillo 41-111, 87% vs 68% (p = .0008). Un informe de caso demostró cambios relativos cuantificables detectados por pCATIM después del tratamiento con HBO2 de una ulceración del pie diabético. Una investigación adicional puede cuantificar las variaciones de brillo y o GSM específico para ulceraciones y regiones de la piel.

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Cutaneous manifestations of dermatomyositis are unusual and difficult to treat. This study aimed to report a case of cutaneous manifestations of dermatomyositis treated with hyperbaric oxygen. We present a case of dermatomyositis in a 44-year-old female with pain ulcers in her left leg for 17 months, refractory to an exclusive clinical treatment, who underwent a hyperbaric oxygen therapy (HBOT) breathing O2 100%, 90 minute sessions, six days a week, at 2.4 ATA. HBOT therapy proved to be highly efficacious in wound healing in this case and HBOT should be considered as a treatment in the assistance given to such patients.

Manifestações cutâneas da dermatomiosite são raras e difíceis de ser tratadas. O objetivo deste estudo é relatar um caso de manifestações cutâneas da dermatomiosite tratadas com oxigenioterapia hiperbárica, ocorrido em uma paciente de 44 anos, sexo feminino, com úlceras dolorosas em seu membro inferior esquerdo por 17 meses. O caso foi refratário ao tratamento clínico exclusivo e a paciente submetida a tratamento de oxigenioterapia hiperbárica (HBOT), respirando oxigênio a 100%, em sessões de noventa minutos, seis dias por semana, a 2,4 ATA. O HBOT mostrou ser altamente eficaz na cicatrização da lesão neste caso e deve ser um tratamento considerado no cuidado desses pacientes.

Las manifestaciones cutáneas de la dermatomiositis son inusuales y difíciles de tratar. El objetivo de este estudio fue reportar un caso de manifestaciones cutáneas de dermatomiositis tratadas con oxigenoterapia hiperbárica. Presentamos un caso de dermatomiositis en una mujer de 44 años con úlceras dolorosas en su pierna izquierda durante 17 meses, refractaria a un tratamiento clínico exclusivo, que se sometió a oxigenoterapia hiperbárica (HBOT) respirando O2 100%, sesiones de 90 minutos, seis días a la semana, a 2,4 ATA. La terapia con HBOT demostró ser muy eficaz en la cicatrización de heridas en este caso y la HBOT debe considerarse como un tratamiento en la asistencia brindada a estos pacientes.

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OBJECTIVE: To evaluate the efficacy of hyperbaric oxygen therapy (HBOT) in the treatment of hemorrhagic radiation cystitis (HRC). MATERIAL AND METHOD: Retrospective study of patients diagnosed with hematuria secondary to HRC after pelvic radiation from January 2005 to January 2017 who were treated with HBOT. Demographic and clinical variables were collected. A descriptive univariate and multivariate statistical analysis using Cox regression was carried out. The treatment was considered effective when there was a total or partial remission of the hematuria based on the Radiation Therapy Oncology Group (RTOG) scoring schema. Partial remission was defined as the presence of hematuria grade 2 or less. RESULTS: A total of 67 patients with a mean age of 68,6 years (39-87) were included. 65,7% men and 34,3% women. The RT was administered in 64,2% of the cases by urological cause, prostate cancer. The av-erage dose of RT was 75,24 Gy (45-180). The mean from the RT to the HBOT treatment was 55,97 months (4-300) and from the beginning of the hematuria until the treatment was 11,3 months (1-48). Response was observed in 51 (76,1%) patients, total in 50,7% and partial in 25,4% of cases. Patients with a degree of hematuria less than 3, those who were administered more than 30 sessions and those who did not require transfusion or hospital admission, responded significantly bet-ter to treatment with HBOT (p<0.05) according to the univariate and multivariate analysis. No adverse effects related to treatment were reported, only one patient was excluded due to claustrophobia. CONCLUSIONS: Hyperbaric oxygen therapy is an effective and safe treatment for the management of hematuria due to radiological cystitis secondary to radiotherapy. A better response was observed in patients with a lower degree of hematuria and those who could be administered a greater number of sessions.

OBJETIVO: Evaluación la eficacia de la oxigenoterapia hiperbárica (OHB) en el tratamiento de la cistitis rádica hemorrágica (CRH) postradioterapia.MATERIAL Y MÉTODO: Estudio retrospectivo que incluyó a los pacientes diagnosticados de hematuria secundaria a CRH postradioterapia pélvica desde enero de 2005 hasta enero del 2017 tratados con OHB. Se recogieron variables demográficas y clínicas. Se efec-tuó un análisis estadístico descriptivo, univariante y multivariante mediante regresión de Cox. El tratamiento se consideró eficaz cuando se produjo una remisión total o parcial de la hematuria en base a la escala del Grupo Oncológico de Radioterapia (RTOG). La respuesta parcial se definió como la presencia de hematuria grado 2 o menor tras el tratamiento. RESULTADOS: Se recogieron un total de 67 pacientes con una edad media de 68,6 años (39-87). Un 65,7% hombres y 34,3% mujeres. La RT fue administrada en el 64,2% de los casos por causa urológica, la más frecuente fue el cáncer de próstata. La dosis media de RT fue 75,24 Gy (45- 180). La media desde la RT hasta el tratamiento con OHB fue de 55,97 meses (4-300) y desde el inicio de la hematuria hasta el tratamiento de 11,3 meses (1-48). Se observó algún tipo de respuesta en 51 (76,1%) pacientes, siendo una respuesta total en el 50,7% y parcial en el 25,4% de los casos. Los pacientes con un grado de hematuria menor a 3, aquellos que recibieron más de 30 sesiones, y aquellos que no precisaron transfusión ni ingreso hospitalario, respondieron significativamente mejor al tratamiento (p<0,05), según el análisis univariante y multivariante. No fueron reportados efectos adversos relacionados con el tratamiento, solo un paciente fue excluido por claustrofobia. CONCLUSIONES: La terapia con OHB es una tratamiento efectivo y seguro para el manejo de la hematuria por CRH secundaria a radioterapia. Se observó una mejor respuesta en los pacientes con un menor grado de hematuria, en aquellos que recibieron mayor número de sesiones y que no precisaron transfusión ni ingreso hospitalario.

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Cerebral arterial gas embolism is a serious and often iatrogenic fatal event associated with invasive procedures. It is a possible cause of a cardiac arrest and the diagnosis is challenging. We report a case of a cardiac arrest after a cerebral arterial gas embolism, in a 63-year-old male subjected to a Computed Tomography-guided Transthoracic Needle Aspiration Biopsy, which was successfully managed with hyperbaric oxygen therapy.

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Abstract Introduction Controversy surrounds the use of salvage therapies to treat sudden sensorineural hearing loss (SSNHL), with no consensus on recommendations. While several studies have demonstrated the effectiveness of intratympanic administration of steroids (ITS) and hyperbaric oxygen (HBO) treatment, few have compared the efficacy of ITS and HBO therapy in patients with refractory SSNHL. Objective We evaluated the efficiency of ITS and HBO therapy in patients with refractory SSNHL. Methods Patients who did not adequately benefit from systemic treatment were evaluated retrospectively. Refractory patients were defined as those who gained less than 20 dB in hearing after initial treatment. All refractory patients were informed about salvage therapy options: ITS or HBO therapy, the advantages and disadvantages of which were explained briefly. ITS involved 4 mg/mL dexamethasone administered through a 25 gauge needle. Patients underwent HBO therapy in a hyperbaric chamber where they breathed 100% oxygen for 120 min at 2.5 atmospheric pressure. The hearing levels of both groups were evaluated before the salvage therapy and at 3 months after treatment. Improvements in hearing were evaluated according to the Furahashi criteria. We also compared the two therapies in terms of speech discrimination scores (SDSs) and the recovery of all frequencies. Results The salvage therapies generated similar results. Changes in pure tone averages and SDSs were similar for ITS and HBO therapy (p = 0.364 and p = 0.113). Comparison of SDSs and hearing thresholds at all frequencies showed similar levels of improvement. Conclusion ITS and HBO therapy produced similar improvements in SSNHL patients, but the sample size was too small to draw definitive conclusions. Further randomized controlled studies are needed to identify the best therapy for patients with refractory sudden hearing loss.

Resumo Introdução Há muita controvérsia sobre o uso de terapias de resgate para tratar a perda auditiva neurossensorial súbita (PANSS), sem consenso sobre as recomendações. Embora vários estudos tenham demonstrado a eficácia do uso de corticoides intratimpânicos (CIT) e o tratamento com oxigenoterapia hiperbárica (HBO), poucos têm comparado a eficácia da terapia ITS e HBO em pacientes com PANSS refratária. Objetivo Avaliamos a eficiência da terapia com CIT e HBO em pacientes com PANSS refratária. Método Pacientes que não se beneficiaram adequadamente do tratamento sistêmico foram avaliados retrospectivamente. Pacientes refratários foram definidos como aqueles que ganharam menos de 20 dB na audição após o tratamento inicial. Todos os pacientes refratários foram informados sobre as opções de terapia de resgate: terapia com CIT ou HBO, cujas vantagens e desvantagens foram explicadas brevemente. O CIT envolveu 4 mg/mL de dexametasona administrada através de uma agulha de calibre 25. Os pacientes foram submetidos à terapia HBO em uma câmara hiperbárica onde respiraram 100% de oxigênio por 120 min a 2,5 pressão atmosférica. Os níveis de audição de ambos os grupos foram avaliados antes da terapia de resgate e três meses após o tratamento. As melhorias na audição foram avaliadas de acordo com os critérios de Furahashi. Também comparamos as duas terapias em termos de Escores de Discriminação de Fala (EDF) e a recuperação de todas as frequências. Resultados As terapias de resgate demonstraram resultados semelhantes. As alterações nas médias de tons puros e nas EDF foram semelhantes para a terapia com CIT e HBO (p = 0,364 e p = 0,113). A comparação dos EDF e dos limiares de audição em todas as frequências mostrou níveis de melhoria semelhantes. Conclusão CIT e HBO produziram melhorias semelhantes nos pacientes com PANSS, mas o tamanho da amostra era muito pequeno para tirarmos conclusões definitivas. Estudos randomizados e controlados adicionais são necessários para identificar a melhor terapia para pacientes com perda auditiva repentina refratária.

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Abstract Introduction: It is difficult to evaluate the effect of drugs clinically used for idiopathic sudden sensorineural hearing loss, mainly because its underlying mechanism remains unknown. Objective: This study assessed the efficacy of hyperbaric oxygen therapy or ozone therapy in the treatment of idiopathic sudden sensorineural hearing loss, when either therapy was included with steroid treatment. Methods: A retrospective analysis examined 106 patients with idiopathic sudden sensorineural hearing loss seen between January 2010 and June 2012. Those with an identified etiology were excluded. The patients were divided into three treatment groups: oral steroid only (n = 65), oral steroid + hyperbaric oxygen (n = 26), and oral steroid + ozone (n = 17). Treatment success was assessed using Siegel criteria and mean gains using pre- and post-treatment audiograms. Results: The highest response rate to treatment was observed in the oral steroid + ozone therapy group (82.4%), followed by the oral steroid + hyperbaric oxygen (61.5%), and oral steroid groups (50.8%). There were no significant differences in the response to treatment between the oral steroid and oral steroid + hyperbaric oxygen groups (p < 0.355). The oral steroid + ozone group showed a significantly higher response rate to treatment than the oral steroid group (p = 0.019). There were no significant differences between the oral steroid + hyperbaric oxygen and oral steroid + ozone groups (p = 0.146). Conclusion: The efficiency of steroid treatment in patients with severe hearing loss was low. It was statistically ascertained that adding hyperbaric oxygen or ozone therapy to the treatment contributed significantly to treatment success.

Resumo Introdução: É difícil avaliar o efeito dos fármacos clinicamente usados na surdez súbita idiopática, principalmente porque o seu mecanismo subjacente se mantém desconhecido. Objetivo: Avaliar a eficácia da oxigenoterapia hiperbárica ou ozonioterapia no tratamento de surdez súbita, quando uma ou outra terapia é incluída no tratamento com esteroides. Método: Uma análise retrospectiva examinou 106 pacientes com surdez súbita atendidos entre janeiro de 2010 e junho de 2012. Aqueles com uma etiologia identificada foram excluídos. Os pacientes foram divididos em três grupos de tratamento: apenas esteroide oral (n = 65), esteroide por via oral + oxigenoterapia hiperbárica (n = 26) e esteroides por via oral + ozônio (n = 17). O sucesso do tratamento foi avaliado com critérios de Siegel e os ganhos médios com audiogramas pré e pós-tratamento. Resultados: A taxa de resposta mais elevada para o tratamento foi observada no grupo de esteroide + ozonioterapia (82,4%), seguida por grupos de esteroide oral + oxigenoterapia hiperbárica (61,5%) e esteroide oral (50,8%). Não houve diferenças significantes na resposta ao tratamento entre os grupos de esteroide oral e esteroides + oxigenoterapia hiperbárica (p < 0,355). O grupo de esteroide oral + ozônio apresentou uma taxa de resposta significantemente mais elevada ao tratamento do que o grupo de esteroide oral (p = 0,019). Não houve diferenças significantes entre os grupos de esteroide oral + oxigenoterapia hiperbárica e esteroide oral + ozônio (p = 0,146). Conclusão: A eficiência do tratamento com esteroides em pacientes com perda auditiva grave foi baixa. Verificou-se estatisticamente que a adição de oxigenoterapia hiperbárica ou ozonioterapia ao tratamento contribuiu significantemente para o sucesso do tratamento.

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Um caso clínico de tratamento de paciente com osteonecrose induzida por uso de bifosfonatos em mandíbula é apresentado neste estudo, utilizando como tratamento coadjuvante a oxigenoterapia hiperbárica e incorporando a prototipagem para o auxílio no tratamento cirúrgico da lesão, com uso de placa de reconstrução pré-modelada. Descrição do relato de caso de uma paciente, 78 anos de idade, gênero feminino, com história médica de hipertensão arterial sistêmica, diabetes, artrite e artrose, cursando com úlcera, fístula intraoral e exposição óssea e fratura patológica, associado a trauma pelo uso de prótese total. A lesão óssea foi tratada com ressecção parcial e osteossíntese de mandíbula. Seis meses após a cirurgia, não se observava clinicamente ulcerações, exposições ósseas e nem exposição da placa de reconstrução. Paciente não relatava queixas álgicas ou neurológicas. Radiograficamente não foi observado nenhum sinal de sequestro ósseo ou recidiva. Paciente encontra-se no aguardo para reconstrução óssea e reabilitação com implantes osseointegrados. Conclusão: O uso de placas reconstrutoras em cirurgia de osteossíntese de mandíbula pós-ressecção parcial, ainda é um dos melhores tratamentos indicados para osteonecrose associados a fratura patológica, favoráveis a qualidade de vida do paciente. A prototipagem tem trazido muitas vantagens como: menor morbidade, menor tempo cirúrgico, precisão na adaptação da placa ao tecido ósseo e diminuição dos custos hospitalares(AU)

A clinical case of treatment of patients with osteonecrosis induced by the use of bisphosphonates in the mandible is presented, using as adjunctive treatment the hyperbaric oxygen therapy and incorporating prototyping to aid in the surgical treatment of the lesion, using a pre-shaped reconstruction plaque. Description of the case report of a 78-year-old female patient with a medical history of systemic arterial hypertension, diabetes, arthritis and arthrosis, with ulcer, intraoral fistula and bone exposure and pathological fracture associated with Trauma due to the use of total prosthesis. The bone lesion was treated with partial resection and mandibular osteosynthesis. Six months after surgery, no ulcerations, bone exposures, or plaque exposure were clinically observed. Patient did not report pain or neurological complaints. Radiographically no signs of bone sequestration or recurrence were observed. Patient is awaiting bone reconstruction and rehabilitation with osseointegrated implants. The use of reconstructive plaques in post-resection partial mandibular osteosynthesis surgery is still one of the best treatments indicated for osteonecrosis associated with pathological fracture, favorable to patient's quality of life. Prototyping has brought many advantages such as: lower morbidity, shorter surgical time, precision in the adaptation of the plaque to the bone tissue and decrease in hospital costs(AU)

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INTRODUCTION: It is difficult to evaluate the effect of drugs clinically used for idiopathic sudden sensorineural hearing loss, mainly because its underlying mechanism remains unknown. OBJECTIVE: This study assessed the efficacy of hyperbaric oxygen therapy or ozone therapy in the treatment of idiopathic sudden sensorineural hearing loss, when either therapy was included with steroid treatment. METHODS: A retrospective analysis examined 106 patients with idiopathic sudden sensorineural hearing loss seen between January 2010 and June 2012. Those with an identified etiology were excluded. The patients were divided into three treatment groups: oral steroid only (n=65), oral steroid+hyperbaric oxygen (n=26), and oral steroid+ozone (n=17). Treatment success was assessed using Siegel criteria and mean gains using pre- and post-treatment audiograms. RESULTS: The highest response rate to treatment was observed in the oral steroid+ozone therapy group (82.4%), followed by the oral steroid+hyperbaric oxygen (61.5%), and oral steroid groups (50.8%). There were no significant differences in the response to treatment between the oral steroid and oral steroid+hyperbaric oxygen groups (p<0.355). The oral steroid+ozone group showed a significantly higher response rate to treatment than the oral steroid group (p=0.019). There were no significant differences between the oral steroid+hyperbaric oxygen and oral steroid+ozone groups (p=0.146). CONCLUSION: The efficiency of steroid treatment in patients with severe hearing loss was low. It was statistically ascertained that adding hyperbaric oxygen or ozone therapy to the treatment contributed significantly to treatment success.

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INTRODUCTION: Controversy surrounds the use of salvage therapies to treat sudden sensorineural hearing loss (SSNHL), with no consensus on recommendations. While several studies have demonstrated the effectiveness of intratympanic administration of steroids (ITS) and hyperbaric oxygen (HBO) treatment, few have compared the efficacy of ITS and HBO therapy in patients with refractory SSNHL. OBJECTIVE: We evaluated the efficiency of ITS and HBO therapy in patients with refractory SSNHL. METHODS: Patients who did not adequately benefit from systemic treatment were evaluated retrospectively. Refractory patients were defined as those who gained less than 20dB in hearing after initial treatment. All refractory patients were informed about salvage therapy options: ITS or HBO therapy, the advantages and disadvantages of which were explained briefly. ITS involved 4mg/mL dexamethasone administered through a 25 gauge needle. Patients underwent HBO therapy in a hyperbaric chamber where they breathed 100% oxygen for 120min at 2.5 atmospheric pressure. The hearing levels of both groups were evaluated before the salvage therapy and at 3 months after treatment. Improvements in hearing were evaluated according to the Furahashi criteria. We also compared the two therapies in terms of speech discrimination scores (SDSs) and the recovery of all frequencies. RESULTS: The salvage therapies generated similar results. Changes in pure tone averages and SDSs were similar for ITS and HBO therapy (p=0.364 and p=0.113). Comparison of SDSs and hearing thresholds at all frequencies showed similar levels of improvement. CONCLUSION: ITS and HBO therapy produced similar improvements in SSNHL patients, but the sample size was too small to draw definitive conclusions. Further randomized controlled studies are needed to identify the best therapy for patients with refractory sudden hearing loss.

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Mediante diversos experimentos se ha comprobado que la oxigenación hiperbárica favorece el proceso cicatrizal, evitando los retardos de consolidación y cicatrización. El objetivo fue describir la evolución de un paciente con fractura traumática expuesta, luego de la aplicación de oxigenación hiperbárica. Paciente masculino de 51 años de edad, que sufrió un accidente laboral ocasionándole fractura expuesta del tercio medio distal de cúbito y radio del antebrazo izquierdo, así como sección de músculos y vasos sanguíneos, provocándole una atrofia ósea aguda de Sudeck. Durante la evolución del paciente, después del tratamiento quirúrgico se le indicó oxigenación hiperbárica por un período de 5 meses en tres ciclos de 20 sesiones cada uno, durante el tercer ciclo se comenzó a aplicar fisioterapia y rehabilitación. Como resultado del tratamiento con oxigenación hiperbárica, fue efectivo en la disminución del tiempo de evolución de las lesiones traumáticas, lográndose mejorar la sintomatología y el estado funcional del miembro afectado en el paciente(AU)

Through diverse experiments it has been proved that the hyperbaric oxygenation facilitates scarring process avoiding consolidation and healing delays. The objective was describing the evolution of a patient with exposed traumatic fracture after applying hyperbaric oxygen treatment. Male patient aged 51 years who suffered a work accident causing a middle distal third exposed fracture of the left forearm ulna and radius as well as muscles and blood vessels section, and provoking a sharp bone Sudeck atrophy. After the surgical treatment, during the patient`s evolution, hyperbaric oxygenation was indicated for a period of 5 months in three cycles of 20 sessions each; during the third cycle physical therapy and rehabilitation began to be applied. Hyperbaric oxygenation treatment was effective, shortening traumatic lesions evolution time and improving symptoms and the patient injured member functional status(AU)

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Mediante diversos experimentos se ha comprobado que la oxigenación hiperbárica favorece el proceso cicatrizal, evitando los retardos de consolidación y cicatrización. El objetivo fue describir la evolución de un paciente con fractura traumática expuesta, luego de la aplicación de oxigenación hiperbárica. Paciente masculino de 51 años de edad, que sufrió un accidente laboral ocasionándole fractura expuesta del tercio medio distal de cúbito y radio del antebrazo izquierdo, así como sección de músculos y vasos sanguíneos, provocándole una atrofia ósea aguda de Sudeck. Durante la evolución del paciente, después del tratamiento quirúrgico se le indicó oxigenación hiperbárica por un período de 5 meses en tres ciclos de 20 sesiones cada uno, durante el tercer ciclo se comenzó a aplicar fisioterapia y rehabilitación. Como resultado del tratamiento con oxigenación hiperbárica, fue efectivo en la disminución del tiempo de evolución de las lesiones traumáticas, lográndose mejorar la sintomatología y el estado funcional del miembro afectado en el paciente.

Through diverse experiments it has been proved that the hyperbaric oxygenation facilitates scarring process avoiding consolidation and healing delays. The objective was describing the evolution of a patient with exposed traumatic fracture after applying hyperbaric oxygen treatment. Male patient aged 51 years who suffered a work accident causing a middle distal third exposed fracture of the left forearm ulna and radius as well as muscles and blood vessels section, and provoking a sharp bone Sudeck atrophy. After the surgical treatment, during the patient`s evolution, hyperbaric oxygenation was indicated for a period of 5 months in three cycles of 20 sessions each; during the third cycle physical therapy and rehabilitation began to be applied. Hyperbaric oxygenation treatment was effective, shortening traumatic lesions evolution time and improving symptoms and the patient injured member functional status.

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La radionecrosis del tallo cerebral es una de las complicaciones de la radioterapia en pacientes que han recibido tratamiento para un tumor intracraneal, y aunque afortunadamente no es lo más frecuente, sus consecuencias pueden ser devastadoras, pues la importancia del tejido comprometido hace que se generen lesiones que pueden producir secuelas altamente incapacitantes y hasta la muerte del paciente como en efecto sucedió en el presente caso. Según la FDA (Food and Drug Administration) el Oxígeno Hiperbárico (OHB) se encuentra indicado en la radionecrosis ósea y radionecrosis de tejidos blandos (1); el Comité Europeo para Medicina Hiperbárica incluyó la radionecrosis del tejido nervioso central en las indicaciones del oxígeno hiperbárico (2). El caso reportado es el de una paciente de 28 años de edad, con un meduloblastoma de fosa posterior que fue tratado con cirugía y químio-radioterapia, quedando la paciente muy bien clínicamente. 21 meses después del tratamiento inicial presenta síntomas que sugieren una lesión en el tallo cerebral, por lo que nuevamente consulta y posterior a estudios imagenológicos se logra determinar que se trata de una lesión del tallo cerebral por radionecrosis. En julio de 2011 la paciente ya presentaba disartria, bradilalia, lateropulsión izquierda, diplopía, cefalea, marcha atáxica y espasticidad de las cuatro extremidades con predominio del hemicuerpo izquierdo. Al momento de iniciar el tratamiento con OHB (septiembre de 2011), se encontró cuadriparesia no funcional. Se realizaron 6 sesiones con OHB, tratamiento con bevacizumab y corticoides, a pesar de lo cual, la evolución de la paciente fue tórpida y rápidamente fulminante llevándola a la muerte en menos de seis meses. La discusión que surge con este caso clínico, es si el tratamiento con OHB debería ser más enfocado a la prevención y profilaxis que al tratamiento de lesiones que por su ubicación anatómica revisten una alta gravedad y pueden ser irreversibles, una vez que se encuentran instauradas.

Brain stem radionecrosis is a complication of radiotherapy in patients who have been treated for a tumor, and although fortunately not very common, its consequences can be devastating since the importance of the involved tissue causes generation of lesions which can give as a result highly disabling lesions or even the patient's death, as indeed happened in this case. According to the FDA (Food and Drug Administration), Hyperbaric Oxygen (HBO) is indicated in bone and soft tissues radionecrosis (Regulations, 2012), including in the latter the central nervous system. The reported case is a 28-year female patient presenting with a posterior fossa medulloblastoma that was treated with surgery and chemo-radiotherapy. Twenty one months after the initial treatment, she presents with symptoms suggestive of a brain stem lesion for which reason she consults once again, and after imaging studies, a brain stem lesion due to radionecrosis is ascertained. In July 2011 the patient was already presenting with dysarthria, bradilalia, left lateropulsion, diplopy, cephalea, ataxic gait and symmetrical spasticity with predominance of left hemibody. Upon treatment initiation with OHB (September 2011) nonfunctional quadriparesis was found. Six sessions with OHB were performed, and treatment with bevacizumab and corticosteroid agents was given despite which the patient's evolution was poor and fulminating leading to death within less than six months. The discussion rising from this clinical case is whether treatment with OHB should be more focused on prevention and prophylaxis than on treatment of lesions which, because of their anatomical location, entail high seriousness and can be irreversible once they are set up.

O radionecrose tronco cerebral é uma das complicações da radioterapia em pacientes tratados por um tumor intracraniano, e embora felizmente não tão freqüentes, as conseqüências podem ser devastadoras, como a importância da comprometidas causas lesão tecidual gerados que pode produzir altamente seqüelas incapacitantes e até mesmo a morte do paciente como de fato aconteceu neste caso. De acordo com o FDA (Food and Drug Administration) Oxigenoterapia Hiperbárica (OHB) a terapia é indicada na radionecrose radionecrose ossos e tecidos moles (1), o Comité Europeu de Medicina Hiperbárica incluído necrose radiação do tecido nervoso central nas indicações da oxigenoterapia hiperbárica (2). O caso é relatado de um 28-year-old com um meduloblastoma fossa posterior que foi tratado com cirurgia e quimio-radioterapia, o paciente permanecer clinicamente bem. 21 meses após o tratamento inicial tem sintomas que sugerem uma lesão no tronco cerebral, por isso novamente depois de estudos de consulta e de imagem foram capazes de determinar que é um prejuízo para o radionecrose tronco cerebral. Em julho de 2011, o paciente já teve disartria, bradilalia, lateropulsão esquerda, diplopia, cefaléia, ataxia de marcha e espasticidade de todos os quatro membros com dominância do hemisfério esquerdo. Ao iniciar o tratamento com HBO (Setembro de 2011), não encontrou quadriplegia funcional. Foram realizadas 6 sessões com OHB, bevacizumab e terapia com esteróides, apesar de que, a evolução do paciente foi entorpecida e rapidez fulminante levando à sua morte, em menos de seis meses.

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PURPOSE: To analyze the effects of hyperbaric oxygen therapy on liver function in rats previously subjected to ischemia and reperfusion. METHODS: A randomly distribution of 23 Wistar rats was conducted into three groups: SHAM, animals subjected to surgical stress without restricting blood flow by clamping the hepatic pedicle, IR, rats underwent hepatic vascular occlusion intermittently for two complete cycles of 15 minutes of ischemia followed by 5 min of reperfusion, IR / HBO, rats underwent hepatic pedicle clamping and thereafter exposed to hyperbaric oxygen pressure of 2 absolute atmospheres for 60 minutes. We evaluated liver function through mitochondrial function, determined by the stages 3 and 4 of respiration, respiratory control ratio (RCR) and mitochondrial permeability transition (Swelling). Serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were also quantified . We analyzed the results using the Mann-Whitney test and were considered significant all results with p <0.05. RESULTS: There were significant differences between the results of stage 3 in SHAM vs IR group ; of the stage 4 in the groups IR vs SHAM and SHAM vs IR /HBO; of the Respiratory Control Ratio (RCR) in the group IR vs IR / HBO ; of alanine aminotransferase in the groups IR vs SHAM , SHAM vs IR/HBO and IR vs IR / HBO; aspartate aminotransferase in the groups SHAM vs IR and SHAM vs IR / HBO. CONCLUSION: The whole analysis of the mitochondiral function indicators permits us to conclude that the hyperbaric oxygen therapy acted as a protective agent of the mitochondrial function, minimizing the ischemia-reperfusion injury of the hepatic parenchyma.

OBJETIVO: Analisar os efeitos da oxigenoterapia hiperbárica sobre a função hepática de ratos previamente submetidos à isquemia e reperfusão. MÉTODOS: Realizou-se a distribuição aleatória de 23 ratos Wistar em três grupos: SHAM, animais submetidos ao estresse cirúrgico sem restrição de fluxo sanguíneo por clampeamento do pedículo hepático; IR ratos submetidos a oclusão vascular hepática de maneira intermitente em dois ciclos completos de 15 minutos de isquemia, seguidos por 5 min de reperfusão; IR/HBO, ratos submetidos ao clampeamento do pedículo hepático e ,ulteriormente , expostos a oxigenoterapia hiperbárica a pressão de 2 atmosferas absolutas durante 60 minutos. Avaliou-se a função hepática através da função mitocondrial, determinada pelos estados 3 e 4 da respiração mitocondrial, razão de controle respiratório(RCR) e transição de permeabilidade mitocondrial (Swelling) .Quantificou-se também alanina aminotransferase e aspartato aminotransferase séricas. Analisou-se os resultados pelo teste de Mann-Whitney e foram considerados significativos os valores de p < 0,05. RESULTADOS:Houve diferença significativa nos valores do estado 3 no grupo SHAM vs IR; estado 4 nos grupos SHAM vs IR, SHAM vsIR/HBO; Razão de Controle Respiratório(RCR) no grupo IR vs IR/HBO; alanina aminotransferase nos grupos SHAM vs IR, SHAM vs IR/HBO, IR vs IR/HBO; aspartato aminotransferase nos grupos SHAM vs IR , SHAM vs IR/HBO. CONCLUSÃO: A análise dos parâmetros mitocondriais como um todo permitiu concluir que a oxigenoterapia hiperbárica atuou como agente protetor da função mitocondrial, minimizando os efeitos deletérios da lesão de isquemia e reperfusão do parênquima hepático.

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