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Background: Whole-body vibration (WBV) is used to enhance physical performance in sports and rehabilitation. The present study analyzed the effects of remobilization with WBV on the soleus muscle of Wistar rats. Methods: Twenty-eight animals were separated into four experimental groups (n = 7): CON (control); IM (immobilized); FR (immobilization and free remobilization); and WBV (immobilization and remobilization with WBV). The immobilization of the pelvic limb was carried out according to the standard protocol using a plaster cast for 15 days. For remobilization with WBV, a Frequency of 60 Hz was applied for 10 min, five days a week, for two weeks. After the remobilization period, the animals were euthanized, and the right soleus muscle was dissected followed by processing for histomorphometric analysis and immunolocalization of Aquaporin 1 (AQP1). Results: We observed a reduced larger diameter in IM compared to CON, with restored values in WBV. For the estimation of connective tissue, a significant increase was observed in the immobilized groups, while a reduction was noted in the remobilized groups. AQP1 expression decreased significantly in IM and increased in WBV. Conclusion: Immobilization caused morphofunctional damage to the soleus muscle, and remobilization with WBV is efficient and offers advantages over free remobilization.

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Objetivo: Extrair evidências científicas na literatura acerca dos fatores que podem causar imobilidade ou síndrome da imobilidade no idoso e possíveis intervenções. Métodos: Estudo do tipo revisão integrativa da literatura, realizado durante os meses de dezembro de 2019 a julho de 2020 por meio de buscas de evidências nas seguintes bases de dados: Medline, Scielo, Lilacs, Pubmed, Cinahl, Web of Science, Cochrane/Librany, Ebsco, Embase e Scorpus. Resultados: Foram identificadas 1656 produções, sendo selecionados dez estudos para a elaboração desta revisão. A maior parte das investigações foi produzida no Brasil, e as demais na Espanha, em Portugal, na Austrália e nos Estados Unidos. Os estudos evidenciaram que as causas da imobilidade no idoso são multifatoriais, que requerem intervenções específicas e adequadas, visando prevenir a imobilidade e a síndrome da imobilidade, suas consequências e melhorar a qualidade de vida dos idosos. Conclusão: Ressalta-se a necessidade de construir um instrumento que possibilite avaliar a síndrome da imobilidade no idoso, a fim de direcionar o cuidado individualizado e específico, assim como, promover a qualificação de profissionais na área de Gerontologia. (AU)

Objective: To extract scientific evidence in the literature about the factors that can cause immobility or immobility syndrome in the elderly and possible interventions. Methods: Study of the integrative literature review type performed from evidence searches in the databases: Medline, Scielo, Lilacs, Pubmed, Cinahl, Web of Science, Cochrane/Librany, Ebsco, Embase and Scorpus, during the months of December from 2019 to July 2020. Results: 1,656 productions were identified, and 10 studies were selected for the preparation of this review. Most of the investigations were produced in Brazil and the rest in Spain, Portugal, Australia and the United States. Studies have shown that the causes that compromise mobility in the elderly are multifactorial; indicate the need for specific and appropriate interventions, aimed at preventing immobility and immobility syndrome, and their consequences, with a view to improving the quality of life of the elderly. Conclusion: It points to the need to build an instrument to assess the immobility syndrome in the elderly, in order to guide individualized and specific care, as well as the importance of training professionals in the field of gerontology. (AU)

Objetivo: Extraer evidencia científica enla literatura sobre losfactores que pueden provocar inmovilidad o síndrome de inmovilidad em el anciano y posibles intervenciones. Métodos: Estudio del tipo de revisión integrativa de la literatura realizada a partir de búsquedas de evidencia em las bases de datos: Medline, Scielo, Lilacs, Pubmed, Cinahl, Web of Science, Cochrane / Librany, Ebsco, Embase y Scorpus, durante los meses de diciembre de 2019 a julio. 2020. Resultados: se identificaron 1.656 producciones y se seleccionaron 10 estudios para laelaboración de esta revisión. La mayoría de lasinvestigaciones se produjeronen Brasil y el resto em España, Portugal, Australia y Estados Unidos. Los estudioshan demostrado que las causas que comprometenlamovilidad em losancianossonmultifactoriales; indicanlanecesidad de intervenciones específicas y adecuadas, dirigidas a prevenir lainmovilidad y el síndrome de inmovilidad, y sus consecuencias, con miras a mejorarlacalidad de vida de las personas mayores. Conclusión: Es necesario construir un instrumento para evaluar el síndrome de inmovilidad em el anciano, com el fin de orientar cuidados individualizados y específicos, así como la importancia de formar professional esenel campo de la gerontología. (AU)

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The maned sloth (Bradypus torquatus) is an endemic and endangered species of two Brazilian states, with much unknown biological information needed to direct conservation actions. Other sloth species have been studied regarding anesthesia; however, there is a lack of anesthesia research for the maned sloth. Anesthetic data were collected from 12 free-range maned sloths that were immobilized for a field examination. Individuals were anesthetized using a combination of ketamine (4.0 mg/kg) and medetomidine (0.03 mg/kg), and antagonized with atipamezole (0.1 mg/kg). Time to induction and recovery were recorded and compared with sex and age classes. After the induction and until antagonist administration, physiological parameters (rectal temperature, heart rate, respiratory rate, and oxygen saturation) were recorded every 10 min during anesthesia and were statistically evaluated over time. Induction was fast (3.21 ± 0.76), but recovery was longer (113.3 ± 18) when compared to other studies. Induction and recovery times were not different across sex or age classes. Rectal temperature, heart rate, and oxygen saturation remained stable throughout the procedure. Respiratory rate significantly decreased over time, from 18.25 ± 7.03 to 13.17 ± 3.66 movements per minute. Our results indicate that the described combination of ketamine and medetomidine is a safe and effective choice for anesthesia of maned sloths.

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Introduction: Closed isolated subtalar dislocations are very rare and major cause of subtalar dislocation remains to be road traffic accidents. Objective: Identify isolated medial subtalar closed dislocations and their forms a management. Presentation of case: 22-year-old male sustained road traffic accident following which he had deformed foot with inability to bear weight. On evaluation he was found to have medial subtalar dislocation reduced with manual traction. One year follow up showed, no residual deformity or pain and had very good functional outcome. Conclusions: It is of great importance to identify the difference between medial subluxation or dislocation and medial swivel injury which have different mechanisms as well as different reduction maneuvers(AU)

Introducción: Las luxaciones subastragalinares aisladas cerradas son muy raras y la principal causa de luxación subastragalina resultan los accidentes de tráfico. Objetivo: Identificar las luxaciones cerradas subastragalina medial aisladas y su tratamiento. Presentación del caso: Un paciente hombre de 22 años sufrió un accidente de tránsito tras el cual quedó deformado el pie sin poder soportar peso. En la evaluación se encontró la luxación subastragalina medial que se redujo con tracción manual. El seguimiento al año no mostró deformidad residual ni dolor y tuvo muy buen resultado funcional. Conclusiones: Es de gran importancia identificar la diferencia entre subluxación o luxación medial y lesión por giro medial, las cuales tienen diferentes mecanismos, así como diferentes maniobras de reducción(AU)

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OBJECTIVES: to discuss the content of manuals, with emphasis on orthopedics, in support of the development of nursing care culture. METHODS: cultural-historical method articulated with document analysis technique. The sources were nursing manuals - Portuguese, French, English, and Spanish - from 1875 to 1928. RESULTS: this study pointed to 12 works - 6 authored by physicians, 2 by nurses, 3 institutional, and 1 by a Sister of Charity - that presented, in a transversal way, the professionalization process initiated in Europe. The manuals addressed first aid care and immobilization methods, from the simplest, such as improvised splints, to the application of plaster casts. CONCLUSIONS: the nurses' work, even in a limited capacity, showed that they were able to observe warning signs so that doctors could act, with some exceptions.

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A combination of tiletamine-zolazepam, medetomidine, and azaperone was used to immobilize captive Chacoan peccaries (Catagonus wagneri) for health assessments and biological sample collection at the Centro Chaqueño para la Conservación e Investigación (CCCI) in the Paraguayan Chaco during July in 2017 and 2018. In total, 83 peccaries kept in 0.25-1.50 hectare enclosures were immobilized via dart-administered anesthetic. Mean animal weight was 33.89±3.74 kg (standard deviation; n=77). The mean intramuscular (IM) anesthetic drug and dosages were 0.03±0.00 mg/kg of medetomidine, 0.91±0.10 mg/kg of Zoletil 50 (tiletamine-zolazepam), and 0.30±0.03 mg/kg azaperone. The mean time to recumbency after darting was 6.07±2.65 min. The mean time to reach the anesthetic plane postdarting was 10.00±2.00 min. Muscle relaxation was adequate to allow minor veterinary procedures. A mean dosage of 0.15±0.02 mg/kg of atipamezole was given IM to reverse the medetomidine. Recoveries were smooth and animals were standing by 59.17±30.18 min postreversal. Full recovery and release back to enclosures occurred 90±30 min postreversal. A single dose of this drug combination provided adequate anesthesia for 88% of adult Chacoan peccaries; 12% needed a supplemental dose of tiletamine-zolazepam because of failure to receive the full dose from the anesthetic dart. Sex and age did not impact the dosage required to achieve immobilization. Confinement during recovery from anesthesia is required with this protocol. Aside from mild hypoxemia, no adverse effects from anesthesia were observed. However, oxygen supplementation as a part of this protocol is recommended to support circulatory and respiratory capacity.

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INTRODUCTION: Skeletal muscle atrophy leads to a reduction in muscle strength, functionality, and the quality of life of individuals. OBJECTIVE: To explore the effects of two different wavelengths (red and infrared) of laser PBMT on muscle atrophy and its active ingredients on skeletal muscle atrophy using an in vivo model of muscle atrophy. METHODS: Thirty-two Wistar rats were randomly divided into four experimental groups: control (CG) animals were not immobilized and did not receive any type of treatment; immobilized animals with no treatment (ImC); immobilized animals submitted to red laser with wavelength of 660 nm (ImR) and near-infrared laser with wavelength of 808 nm (ImIR) treatments. The treatments were applied daily, at 2 points in the right gastrocnemius muscle (cranial and caudal), through the punctual contact technique, for 9 sessions, with the first application immediately after removing the cast. RESULTS: The histological results demonstrated that in both treated groups (red and infrared wavelengths) a reduction of the inflammatory infiltrate and less connective tissue thickening when compared to the ImC. However, only infrared light was observed regenerating muscle fibers and an increase in the number of oxidative fibers (type I). CONCLUSION: These results suggest that red and infrared wavelength laser PBMT were able to promote changes in the morphology of the gastrocnemius muscle submitted to atrophy in an experimental immobilization model, reducing the inflammatory infiltrate and the formation of intramuscular connective tissue. However, infrared laser PBMT promoted more evident positive effects by increasing regenerating muscle fibers and the number of oxidative fibers.

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Immobilization protocols for head and neck radiotherapy (HNR) are needed to reduce radiation dispersion in non-tumoral tissues and to reduce damage to noble structures; however, involuntary mandibular movements require additional adaptations of thermoplastic masks. PURPOSE: Our objective was to describe an easy and low-cost disposition to help thermoplastic masks immobilize the mandible during HNR. MATERIALS AND METHODS: We created Styrofoam models to stabilize the mandible which was used to make adaptation to the thermoplastic masks. The Styrofoam model was inserted into alginate to construct a mold and a self-curing acrylic resin was added into the mold. After the acrylic resin hardened, the dispositive mandibular immobilizer was removed from the alginate mold and adjusted with Maxicut and Minicut or other drills and sandpaper. The alginate mold can be used on the same day to create backup devices. RESULTS AND CONCLUSIONS: Our device was made in a simple way, has a low cost, and helps the thermoplastic masks to immobilize the mandible, leading to a more precise individualization of head and neck immobilization that can reduce unanticipated radiation scatter and improve radiation distribution.

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RESUMEN: El cuerpo calloso (CC), es la mayor comisura de sustancia blanca del encéfalo de los mamíferos placentados, constituida por numerosos haces de fibras transversales que conectan áreas corticales de ambos hemisferios cerebrales. Por otro lado, el estrés se define como una respuesta general del organismo ante demandas externas o internas, inicialmente amenazantes, que consiste en movilizar recursos fisiológicos y psicológicos para poderlas afrontar. Dada la importancia del cuerpo calloso en las conexiones cortico-corticales, el objetivo del presente estudio, fue evaluar el efecto en ratas, de un estrés prenatal crónico por inmovilización, sobre la anatomía macroscópica del CC. Se utilizaron seis ratas preñadas de la cepa Wistar de 250 g, de las cuales tres fueron sometidas, a partir del octavo día postconcepción, a una restricción de movimiento por diez días (2h/día). Posteriormente, las madres prosiguieron su gestación, parto y lactancia. Al nacimiento, las camadas fueron ajustadas a seis crías machos por madre (n=36), destetadas a los 21 días y sacrificadas a los 45-52 días de edad. Los encéfalos fueron seccionados a través de la cisura interhemisférica y ambos hemisferios fotografiados por su cara medial. Las imágenes fueron digitalizadas y analizadas mediante el programa Scion Image®, para la medición del área total, parciales (tercio anterior, medio, posterior y quinto posterior) y perímetro callosal. Es así como, el estrés prenatal por inmovilización, afectó significativamente (p<0,01), la morfología macroscópica del cuerpo calloso. Evidenciándose una disminución del área total, áreas parciales y perímetro callosal, en los animales sometidos a restricción prenatal. Estableciendo una relación directa entre número de axones y área callosal e inversa entre diámetro y densidad axonal; lo observado podría tener incidencia en la transferencia interhemisférica.

SUMMARY: The Corpus Callosum (CC) is the largest white matter commissure in the brain of placental mammals, consisting of numerous transverse fiber bundles that connect cortical areas of both cerebral hemispheres. On the other hand, stress is defined as a general response of the organism to external or internal demands, initially threatening, which consists of mobilizing physiological and psychological resources to be able to face them. Given the importance of CC in cortico-cortical connections, the aim of the present study, was to evaluate the effect of chronic pre-natal immobilization stress on the macroscopic anatomy of CC in rats. Six 250g pregnant rats of the Wistar strain were used, of which three were subjected, starting on the eighth post-conception day, to movement restriction for ten days (2h/day). Subsequently, the mothers continued their gestation, delivery and lactation. At birth, litters were adjusted to six male offspring per mother (n=36), which were weaned at 21 days and slaughtered at 45-52 days of age. The brains were fixed, and later sectioned through the interhemispheric fissure and both hemispheres photographed by their medial aspect. The images were digitized and analyzed using the Scion Image® program, for the measurement of the total area, partial area (ante- rior, middle and posterior thirds, as well as posterior fifth) and callosal perimeter. Thus, prenatal stress due to immobilization significantly affected (p<0.01), the macroscopic morphology of the CC. Evidence shows a decrease in the total area, partial areas and callosal perimeter in the animals subjected to prenatal restraint, as compared to normal animals. Establishing a direct relationship between number of axons and callosal area and an inverse relationship between diameter and axonal density, what was observed may have an impact on interhemispheric transfer.

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Abstract Introduction: The negative impact of prolonged immobilization results a physical decline during hospitalization in patients with acute brain injury. Objective: To investigate the benefits of early exercises on the mobility of patients with acute brain injury assisted at an Intensive Care Unit (ICU). Methods: This is a prospective, single-blind, controlled clinical trial. A total of 303 patients were assessed. Due to eligibility criteria, exercise protocol was applied in 58 participants, 32 with brain injury caused by traumatic event and 26 with brain injury caused by cerebrovascular event. Exercise began 24 hours after patients' admission at the ICU. Participants were submitted to passive and active mobilization protocols, performed according to level of sedation, consciousness and collaboration. Statistical analysis was conducted with repeated measures analysis of variance. Significance was set at 5%. Results: The group of patients with traumatic brain injuries was younger (p = 0.001) and with more men (p = 0.025) than the group of patients with clinical events. Most exercise sessions were performed in sedated patients. By the end of the protocol, participants with traumatic and clinical brain injury were able to do sitting and standing exercises. Both groups were similar on ICU discharge (p = 0.290). The clinical group presented better improvement on level of consciousness than the traumatic group (p = 0.005). Conclusion: Participants with an acute brain injury presented at the time of discharge from the ICU good mobility and improvement in the level of consciousness.

Resumo Introdução: O impacto negativo da imobilização prolongada resulta em declínio funcional durante a hospitalização em pacientes com lesão cerebral aguda. Objetivo: Investigar os benefícios dos exercícios precoces na mobilidade dos pacientes com lesão cerebral aguda atendidos em uma Unidade de Terapia Intensiva (UTI). Métodos: Trata-se de um estudo clínico prospectivo, controlado e cego. Foram avaliados 303 pacientes. Devido aos critérios de elegibilidade, o protocolo de exercício foi aplicado em 58 participantes, 32 com lesão cerebral causada por evento traumático e 26 com lesão cerebral causada por evento cerebrovascular. O exercício começou 24 horas após a admissão dos pacientes na UTI. Os participantes foram submetidos a protocolos de mobilização passiva e ativa, realizados de acordo com o nível de sedação, consciência e colaboração. A análise estatística foi realizada com análise de medidas repetidas de variância. A significância foi estabelecida em 5%. Resultados: O grupo de pacientes com lesão cerebral traumática foi mais jovem (p = 0,001) e com mais homens (p = 0,025) do que o grupo de pacientes com eventos clínicos. A maioria das sessões de exercícios foi realizada em pacientes sedados. Ao final do protocolo, os participantes com lesão cerebral traumática e clínica foram capazes de fazer exercícios de sentar e ficar em pé. Ambos os grupos foram semelhantes na alta da UTI (p = 0,290). O grupo clínico apresentou melhor ganho no nível de consciência do que o grupo traumático (p = 0,005). Conclusão: Os participantes com lesão cerebral aguda apresentaram no momento da alta da UTI boa mobilidade e melhora do nível de consciência.

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Objetivo: Apresentar o protocolo de um estudo que procura desenvolver uma escala para avaliação do desconforto provocado pela imobilização nas vítimas de trauma e um modelo de maca eficaz na imobilização da vítima de trauma em desenvolvimento. Método: Realizar-se-ão quatro estudos sequenciais: Estudo descritivo, exploratório de abordagem quantitativa para avaliar o grau de desconforto provocado pela imobilização na maca de vácuo e/ou plano duro; Estudo psicométrico para construir e validar um instrumento que permita avaliar o desconforto provocado pela imobilização na maca de vácuo e plano duro; Construção da ImoConfort Mattress para imobilização e transporte de vítimas; e Ensaio clínico randomizado para avaliar a eficácia da ImoConfort Mattress quanto ao conforto, imobilização, aquecimento e controlo da trepidação/vibração provocada pelo transporte. Considerações finais: A criação de um instrumento que monitorize o desconforto durante o socorro e transporte com imobilização, contribuirá para melhorar o tratamento implementado às vítimas de trauma. Espera-se que a ImoConfort Mattress contribua para a melhoria da qualidade da assistência clínica durante o socorro extra-hospitalar. (AU)

Objective: To present the protocol of a study that seeks to develop a scale to assess the discomfort caused by immobilisation in trauma victims and an effective mattress model for immobilization of trauma victims, in desenvolviment. Methods: Four sequential studies will be carried out: Descriptive, exploratory quantitative approach study to assess the degree of discomfort caused by the vacuum mattress splint and/or spine board; Psychometric study to construct and validate an instrument to assess the discomfort caused by immobilization on vacuum mattress splint and/or spine board; Construction of the ImoConfort Mattress for immobilization and transportation of victims; Randomized clinical trial to assess the effectiveness of the mattress in terms of comfort, immobilization, rewarming and control of trepidation/vibration caused by transportation. Final considerations: The creation of an instrument to monitor discomfort during rescue and transport with immobilisation will help to improve all the treatment implemented for trauma victims. The construction of ImoConfort Mattress will improve the quality of clinical care during out-of-hospital rescue. (AU)

Objetivo: Presentar el protocolo de un estudio que pretende desarrollar una escala para evaluar las molestias causadas por la inmovilización en las víctimas de trauma y un modelo de una camilla efectiva para la inmovilización de la víctima de trauma en desenvolvimiento. Métodos: Se llevarán a cabo cuatro estudios secuenciales: Estudio descriptivo y exploratorio del enfoque cuantitativo para evaluar el grado de incomodidad causado por la camilla de vacío y/o plano duro; Estudio psicométrico para construir y validar un instrumento para evaluar la incomodidad causada por la inmovilización; Construcción del ImoConfort Mattress para la inmovilización y el transporte de las víctimas; Ensayo clínico aleatorio para evaluar la eficacia de la camilla respecto a la comodidad, la inmovilización, el calentamiento y el control de las trepidaciones/vibraciones causadas por el transporte. Consideraciones finales: La creación de un instrumento para monitorizar la incomodidad durante el rescate y el transporte con inmovilización contribuirá a mejorar todo el tratamiento aplicado a las víctimas de trauma. La construcción del ImoConfort Mattress mejorará la calidad de la atención clínica durante la ayuda extrahospitalaria. (AU)

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Abstract Cast immobilization is used in the management of various injuries of joints and/or limbs. A variety of nail disorders have been reported in association with cast immobilization of the forearm and wrist among a limited number of patients so far. The mechanism was not clearly identified in some of these cases. Here, the authors report two patients with nail disorders appeared after the removal of immobilization cast of forearm and wrist and review the literature.

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RESUMO: A Artrogripose Múltipla Congênita (AMC) é uma síndrome rara, que representa um grupo de condições congênitas caracterizado por contraturas articulares em duas ou mais articulações, não progressivas, geralmente simétricas, de etiologia desconhecida e que pode estar associada a outras malformações, como viscerais e neurológicas. Apresenta-mos dois casos isolados com achados característicos de AMC, atendidos em ambulatório de pediatria de alto risco de uma cidade do Oeste do Paraná. Caso 1: lactente, sexo feminino, 14 dias de vida, com redução dos movimentos fetais referidos pela mãe, apresentando malformações envolvendo somente os membros, visualizadas logo após o nasci-mento. Caso 2: lactente, sexo masculino, quatro meses de vida, com diagnóstico de hipocinesia fetal ao ultrassom obstétrico de 23 semanas, ao nascimento apresenta contraturas dos membros e disfunção do sistema nervoso cen-tral. O diagnóstico da artrogripose é complexo e essencialmente clínico, sendo necessária uma anamnese meticulosa, contemplando uma avaliação da gestação, via de parto, história familiar e um exame físico minucioso, classificando quais os tipos de contraturas, membros envolvidos, presença de musculatura alterada e de alterações neurológicas, a fim de diferenciar a AMC das outras síndromes que também cursam com contraturas articulares. O seguimento e tratamento dos lactentes com artrogripose devem ocorrer em acompanhamento multidisciplinar devido às variadas manifestações que a doença pode apresentar e à característica de recidiva ao longo dos anos. (AU)

ABSTRACTArthrogryposis Multiple Congenita (AMC) is a rare syndrome that represents a group of congenital conditions character-ized by joint contractures in two or more joints, non-progressive, usually symmetrical, of unknown etiology and which may be associated with other malformations, such as visceral and neurological. We present two isolated cases with characteristic features of AMC, seen in a high-risk pediatrics outpatient clinic in a city in western Paraná. Case 1: infant, female, 14 days old, with reduced fetal movements reported by the mother, presenting malformations involving only the limbs, seen immediately after birth. Case 2: infant, male, four months old, diagnosed with fetal hypokinesia on 23-week obstetric ultrasound, at birth, presents limb contractures and central nervous system dysfunction. The diagnosis of ar-throgryposis is complex and essentially clinical, requiring a meticulous anamnesis, including an assessment of pregnan-cy, delivery, family history and a thorough physical examination, classifying what types of contractures, involved limbs, presence of altered musculature and neurological changes to differentiate AMC from other syndromes that also have joint contractures. The aftercare and treatment of infants with arthrogryposis must occur in multidisciplinary follow-up due to the varied manifestations that the disease may present and the characteristic of recurrence over the years. (AU)

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Cast immobilization is used in the management of various injuries of joints and/or limbs. A variety of nail disorders have been reported in association with cast immobilization of the forearm and wrist among a limited number of patients so far. The mechanism was not clearly identified in some of these cases. Here, the authors report two patients with nail disorders appeared after the removal of immobilization cast of forearm and wrist and review the literature.

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A combination of intramuscular medetomidine and ketamine was used to immobilize 46 free-ranging huemul deer (Hippocamelus bisulcus) with a remote drug delivery system in Chilean Patagonia for tagging and biological sampling. Captures occurred in May-October of 2005-09 between fall and early spring in the southern hemisphere. An initial dose of 6.6 mg medetomidine and 185 mg ketamine was adjusted after 17 captures to 3 mg and 200 mg, respectively, in the 29 remaining deer. Mean±SD adjusted dose was 0.042±0.012 mg/kg of medetomidine and 2.929±0.427 mg/kg of ketamine. Inductions were calm and the mean±SD time to sternal recumbency was 10.3±10.1 min. Palpebral reflex and jaw tone were present during immobilization. Atipamezole at 5 mg/mg of medetomidine was administered intramuscularly for reversal after 55.3±18.8 min procedure time. Recoveries were smooth and mean±SD time to standing was 10.2±3.3. All immobilized animals were hypoxemic by pulse oximetry (blood oxygen saturation approximately 81%). Three animals that developed apnea were resuscitated through chest compression and atipamezole administration, another regurgitated during capture, and all developed tachypnea. The combination of medetomidine-ketamine and atipamezole can be used for partially reversible immobilization of huemul, but supplemental oxygen should be administered, blood oxygenation should be monitored, and equipment for intubation and manual ventilation should be available.

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The myotendinous junction (MTJ) is the muscle-tendon interface and constitutes an integrated mechanical unit to force transmission. Joint immobilization promotes muscle atrophy via disuse, while physical exercise can be used as an adaptative stimulus. In this study, we aimed to investigate the components of the MTJ and their adaptations and the associated elements triggered with aquatic training after joint immobilization. Forty-four male Wistar rats were divided into sedentary (SD), aquatic training (AT), immobilization (IM), and immobilization/aquatic training (IMAT) groups. The samples were processed to measure fiber area, nuclear fractal dimension, MTJ nuclear density, identification of telocytes, sarcomeres, and MTJ perimeter length. In the AT group, the maintenance of ultrastructure and elements in the MTJ region were observed; the IM group presented muscle atrophy effects with reduced MTJ perimeter; the IMAT group demonstrated that aquatic training after joint immobilization promotes benefits in the muscle fiber area and fractal dimension, in the MTJ region shows longer sarcomeres and MTJ perimeter. We identified the presence of telocytes in the MTJ region in all experimental groups. We concluded that aquatic training is an effective rehabilitation method after joint immobilization due to reduced muscle atrophy and regeneration effects on MTJ in rats.

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Methylglyoxal (MGO) is an endogenous toxin, mainly produced as a by-product of glycolysis that has been associated to aging, Alzheimer's disease, and inflammation. Cell culture studies reported that MGO could impair the glyoxalase, thioredoxin, and glutathione systems. Thus, we investigated the effect of in vivo MGO administration on these systems, but no major changes were observed in the glyoxalase, thioredoxin, and glutathione systems, as evaluated in the prefrontal cortex and the hippocampus of mice. A previous study from our group indicated that MGO administration produced learning/memory deficits and depression-like behavior. Confirming these findings, the tail suspension test indicated that MGO treatment for 7 days leads to depression-like behavior in three different mice strains. MGO treatment for 12 days induced working memory impairment, as evaluated in the Y maze spontaneous alternation test, which was paralleled by low dopamine and serotonin levels in the cerebral cortex. Increased DARPP32 Thr75/Thr34 phosphorylation ratio was observed, suggesting a suppression of phosphatase 1 inhibition, which may be involved in behavioral responses to MGO. Co-treatment with a dopamine/noradrenaline reuptake inhibitor (bupropion, 10 mg/kg, p.o.) reversed the depression-like behavior and working memory impairment and restored the serotonin and dopamine levels in the cerebral cortex. Overall, the cerebral cortex monoaminergic system appears to be a preferential target of MGO toxicity, a new potential therapeutic target that remains to be addressed.

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This study compared the effects of contralateral eccentric-only (ECC) and concentric-/eccentric-coupled resistance training (CON-ECC) of the elbow flexors on immobilized arm. Thirty healthy participants (18-34 y) were randomly allocated to immobilization only (CTRL; n = 10), immobilization and ECC (n = 10), or immobilization and CON-ECC group (n = 10). The non-dominant arms of all participants were immobilized (8 h·day-1 ) for 4 weeks, during which ECC and CON-ECC were performed by the dominant (non-immobilized) arm 3 times a week (3-6 sets of 10 repetitions per session) with an 80%-120% and 60%-90% of one concentric repetition maximum (1-RM) load, respectively, matching the total training volume. Arm circumference, 1-RM and maximal voluntary isometric contraction (MVIC) strength, biceps brachii surface electromyogram amplitude (sEMGRMS ), rate of force development (RFD), and joint position sense (JPS) were measured for both arms before and after immobilization. CTRL showed decreases (P < .05) in MVIC (-21.7%), sEMGRMS (-35.2%), RFD (-26.0%), 1-RM (-14.4%), JPS (-87.4%), and arm circumference (-5.1%) of the immobilized arm. These deficits were attenuated or eliminated by ECC and CON-ECC, with greater effect sizes for ECC than CON-ECC in MVIC (0.29: +12.1%, vs -0.18: -0.1%) and sEMGRMS (0.31:17.5% vs -0.15: -5.9%). For the trained arm, ECC showed greater effect size for MVIC than CON-ECC (0.47 vs 0.29), and increased arm circumference (+2.9%), sEMGRMS (+77.9%), and RDF (+31.8%) greater (P < .05) than CON-ECC (+0.6%, +15.1%, and + 15.8%, respectively). The eccentric-only resistance training of the contralateral arm was more effective to counteract the negative immobilization effects than the concentric-eccentric training.

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Background: The brown bear (Ursus arctos) is considered one of the largest terrestrial carnivores, native from temperate forest regions of North America, Europe and Asia. In Brazil, they are founded in captivity and their safe capture and immobilization are obtained with one effective anesthesia for management and surgical and diagnostic procedures. Some anesthetic protocols are described for these purposes, however, there is a lack for data on the anesthetic and adverse effects they have on bears when used. The aim of this case is to report the use and effects of the association of dexmedetomidine with tiletamine and zolazepam in the chemical containment of a captive adult brown bear. Case: A 33-year-old female brown bear, weighing 100 kg, belonging to the Zoobotanic Park of Teresina, Piauí, Brazil, was chemically immobilized for an incisional biopsy of a cutaneous nodule with 1.0 cm diameter in the right face region. The anesthetic protocol included 6 µg/kg of dexmedetomidine associated with 3 mg/kg of tiletamine and zolazepam, administered intramuscularly by dart into the gluteal region of the right pelvic limb. The animal showed moderate ataxia at 5 min and assumed sternal decubitus 7 min after anesthetic administration. The bear's degree of sedation was considered adequate and safe to perform the biopsy at 10 min after administration. Heart rate (47 ± 3 bpm), respiratory rate (17 ± 2 mpm) and rectal temperature (38.7 ± 0.1ºC) were monitored. The bear remained immobile and unconscious throughout the procedure, with intense muscle relaxation, bilateral eyeball rotation, absent lateral palpebral reflex and mild medial reflex and without nystagmus. Complementary sedative doses were not necessary. At the beginning of anesthetic recovery, the bear received 6 µg/kg of atipamezole, intramuscularly. After 25 min of administration of atipamezole, the animal showed signs of recovery in the level of consciousness and reactivity to external stimuli, and assumed the quadrupedal position at 60 min after reverser application. Discussion: Even in captivity, the bears behavior is unpredictable and attack can occur, causing trauma or death to people. For this, the chemical immobilization is important to keep safety of everyone. This procedure was performed using blowgunassisted darts thrown by a staff member who had experience in using this method, who darted accurately and effectively. The latency time observed after administration of the anesthetic protocol used is similar to reported in other studies with bears that also received intramuscular dexmedetomidine and tiletamine and zolazepam and showed intense muscle relaxation and immobility. The doses used contributed to the absence of bradycardia and hypoventilation and, performing the procedure in the morning, when the temperature is milder in the city, minimized the chance of hyperthermia and thermal stress in the animal, not requiring body cooling. The use of dexmedetomidine in chemical containment protocols for short and minimally invasive procedures allows the subsequent use of its antagonist, atipamezole, contributing to a shorter recovery time, return of the animal's degree of consciousness and lower incidence of ataxia after assuming a quadrupedal position. The anesthetic protocol used was considered efficient, providing a quick and gentle chemical containment, adequate anesthetic plan and good anesthetic recovery in an adult brown bear from captivity.

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OBJETIVO: Descrever a percepção da equipe multiprofissional sobre o uso da contenção mecânica em idosos. METODOLOGIA: Pesquisa qualitativa realizada com 58 profissionais da área da saúde em duas Instituições de Longa Permanência para Idosos localizadas no estado do Rio de Janeiro, Brasil. Utilizou-se entrevista semiestruturada, com análise temática do conteúdo. O período de coleta de dados foi de novembro de 2017 a junho de 2018. RESULTADOS: Foram identificadas 21 unidades de registro, organizadas em três categorias: percepção da equipe sobre as consequências e riscos do uso da contenção mecânica: o paradoxo da segurança do paciente; implicações na decisão da contenção mecânica de idosos; e estratégias para conter e não conter. CONCLUSÕES: Os achados refletem a necessidade de capacitação dos profissionais no que tange às estratégias de cuidado alternativas, livres de contenção, como parte da promoção de uma cultura de cuidado que respeite o direito à liberdade e a dignidade das pessoas, especialmente as mais vulneráveis.

OBJECTIVE: To describe the perception of a multidisciplinary team on the use of physical restraint in older adults. METHODS: Qualitative research conducted with 58 health professionals in two long term care facilities for older adults located in the state of Rio de Janeiro, Brazil. Semi-structured interviews were further analyzed using thematic content analysis. The data was collected from November 2017 to June 2018. RESULTS: Twenty-one initial codes were identified and organized in three categories: team perception of the consequences and risks of a physical restraint (the patient's safety paradox); implications of the decision of physical restraint of the older adults; and strategies to restrain and not restrain. CONCLUSIONS: The results reinforce the need for training of professionals on restraint-free alternatives of care, as part promoting a culture of care that respects the right to freedom and the dignity of people ­ especially the most vulnerable ones.

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