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Background: Hemangioblastomas are benign vascular neoplasms, World Health Organization grade I, with the most frequent location in the cerebellum. Complete microsurgical resection can be a challenge due to excessive bleeding, which is why preoperative embolization takes importance. Case Description: Two clinical cases are presented, a 25-year-old woman and a 75-year-old man, who presented with intracranial hypertension symptoms due to obstructive hydrocephalus; a ventriculoperitoneal shunt was placed in both cases; in addition, they presented with cerebellar signs. Both underwent embolization with ethylene vinyl alcohol copolymer, with blood flow reduction. After that, they underwent microsurgical resection within the 1st-week post embolization, obtaining, in both cases, gross total resection without hemodynamic complications, with clinical improvement and good surgical outcome. It is worth mentioning that surgical management is the gold standard that allows a suitable surgical approach, like in our patients, for which a lateral suboccipital craniotomy was performed. Conclusion: Solid hemangioblastomas are less frequent than their cystic counterparts. The treatment is the surgical resection, which is a challenge and always has to be considered as an arteriovenous malformation in the surgical planning, including preoperative embolization to reduce perioperative morbidity and mortality and get good outcomes.

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PURPOSE: Our study goal is to review the efficacy of tranexamic acid in reducing blood loss and operative time in nasal surgeries. METHODS: We included randomized clinical trials using oral or intravenous tranexamic acid, excluded non-randomized studies, topic administration, coagulopathy, and using other drugs interfering in the coagulation cascade. Online databases, National Library of Medicine (MEDLINE-PubMED), Latin American and Caribbean Literature on Health Sciences (Lilacs), Cochrane Library, Embase and Google Scholar were used to perform the search. The review was registered in PROSPERO by no CRD42022310977. Two authors, independently, selected the articles meeting the inclusion criteria. They extracted the data and used RevMan 5 software to perform the meta-analysis. RESULTS: Our search resulted in 16 RCTs that were included in the meta-analysis totalizing 1108 patients. Studies were evaluated resulting in a low risk of bias for the five domains. The use of tranexamic acid resulted in significant reduction in duration of surgery (DOS) and intraoperative blood loss (IBL) had significant reduction. The level of evidence according to GRADE System was high in all studies and variables. CONCLUSION: Tranexamic acid has an important role in reducing intraoperative blood loss and duration of surgery. Our study has some limitations due to the low number of RCTs available in the literature.

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Resumen: Introducción: la cirugía protésica total de rodilla (PTR) se puede asociar a pérdidas sanguíneas (PS) significativas. El objetivo es analizar la evolución de la PS tras PTR con recuperador sanguíneo vs drenaje convencional. Material y métodos: estudio prospectivo de dos grupos de 30 pacientes intervenidos de PTR, uno control (GC) y otro estudio con recuperador (GR). Se analizó la PS, hematocrito (Hcto), hemoglobina (Hb), tensión arterial sistólica (TAS) y diastólica (TAD) y frecuencia cardíaca (FC) a las tres, 24, 48, 72 y 96 horas postquirúrgicas, la necesidad de transfusión, el porcentaje de altas en 72 horas y las complicaciones. Resultados: la mayor PS y porcentaje de cambio de Hcto y Hb se produjo a las tres horas postquirúrgicas e inició su recuperación a las 72 horas en el GR (Hcto, p = 0.02) (Hb, p = 0.04) y a las 96 horas en el GC. La TAS, TAD y FC empezó su recuperación a las 72 horas en ambos grupos. El descenso de TAS fue mayor en el GC a las tres horas (p = 0.02), 24 horas (p = 0.02) y 48 horas (p = 0.01) postquirúrgicas. Veinte y 33% de los pacientes fueron transfundidos, además 20 y 74% fueron dados de alta a las 72 horas en el GC y GR, respectivamente. Conclusión: la mayor PS y porcentaje de cambio de Hcto y Hb se produce a las tres horas postquirúrgicas y empieza su recuperación a las 72-96 horas. El recuperador favorece la recuperación del Hcto, Hb y TAS, disminuye la necesidad de transfusión y favorece el alta precoz.

Abstract: Introduction: knee prosthetic surgery can be associated with significant blood loss that can account for up to 20% of blood volume. The objective of our study is to analyze blood loss (BL) after total knee replacement (TKR), with the use of a blood recovery system vs a normal drain. Material and methods: prospective, comparative, and observational study of two groups of 30 patients who underwent TKR, one control (CG) and another study group with a recovery system (RG). We analyzed PS, hemoglobin (Hb), hematocrit (Htc), systolic blood pressure (SBP) and diastolic blood pressure (DBP) and heart rate (HR) at 3-, 24-, 48-, 72- and 96-hours post-surgery, the need for transfusion, and the percentage of discharges in 72 hours and complications. Results: the highest percentage of change in Htc and Hb occurred in the first 3 hours post-surgery and recovery began at 72 hours in the RG (p = 0.02) and at 96 hours in the CG (p = 0.04). The decrease in Hb and Htc began his recovery at 72 hours in the RG and at 96 hours in the CG. The TAS, TAD and FC began their recovery at 72 hours in both groups. The decrease in SBP was greater in the CG at 3 hours (p = 0.02), 24 hours (p = 0.02) and 48 hours (p = 0.01) post-surgery. Six patients were transfused in RG and 10 in CG (p = 0.22). 20% and 74% of the patients were discharged at 72 hours in the CG and RG, respectively. Conclusion: the greatest BL occurs in the first 3 hours post-surgery and recovery begins at 72-96 hours. Recovery blood system decreases BL during the first 3 hours, enhance the recuperation of Hb and SBP, decreases the need for transfusion and favors early discharge.

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INTRODUCTION: knee prosthetic surgery can be associated with significant blood loss that can account for up to 20% of blood volume. The objective of our study is to analyze blood loss (BL) after total knee replacement (TKR), with the use of a blood recovery system vs a normal drain. MATERIAL AND METHODS: prospective, comparative, and observational study of two groups of 30 patients who underwent TKR, one control (CG) and another study group with a recovery system (RG). We analyzed PS, hemoglobin (Hb), hematocrit (Htc), systolic blood pressure (SBP) and diastolic blood pressure (DBP) and heart rate (HR) at 3-, 24-, 48-, 72- and 96-hours post-surgery, the need for transfusion, and the percentage of discharges in 72 hours and complications. RESULTS: the highest percentage of change in Htc and Hb occurred in the first 3 hours post-surgery and recovery began at 72 hours in the RG (p = 0.02) and at 96 hours in the CG (p = 0.04). The decrease in Hb and Htc began his recovery at 72 hours in the RG and at 96 hours in the CG. The TAS, TAD and FC began their recovery at 72 hours in both groups. The decrease in SBP was greater in the CG at 3 hours (p = 0.02), 24 hours (p = 0.02) and 48 hours (p = 0.01) post-surgery. Six patients were transfused in RG and 10 in CG (p = 0.22). 20% and 74% of the patients were discharged at 72 hours in the CG and RG, respectively. CONCLUSION: the greatest BL occurs in the first 3 hours post-surgery and recovery begins at 72-96 hours. Recovery blood system decreases BL during the first 3 hours, enhance the recuperation of Hb and SBP, decreases the need for transfusion and favors early discharge.

INTRODUCCIÓN: la cirugía protésica total de rodilla (PTR) se puede asociar a pérdidas sanguíneas (PS) significativas. El objetivo es analizar la evolución de la PS tras PTR con recuperador sanguíneo vs drenaje convencional. MATERIAL Y MÉTODOS: estudio prospectivo de dos grupos de 30 pacientes intervenidos de PTR, uno control (GC) y otro estudio con recuperador (GR). Se analizó la PS, hematocrito (Hcto), hemoglobina (Hb), tensión arterial sistólica (TAS) y diastólica (TAD) y frecuencia cardíaca (FC) a las tres, 24, 48, 72 y 96 horas postquirúrgicas, la necesidad de transfusión, el porcentaje de altas en 72 horas y las complicaciones. RESULTADOS: la mayor PS y porcentaje de cambio de Hcto y Hb se produjo a las tres horas postquirúrgicas e inició su recuperación a las 72 horas en el GR (Hcto, p = 0.02) (Hb, p = 0.04) y a las 96 horas en el GC. La TAS, TAD y FC empezó su recuperación a las 72 horas en ambos grupos. El descenso de TAS fue mayor en el GC a las tres horas (p = 0.02), 24 horas (p = 0.02) y 48 horas (p = 0.01) postquirúrgicas. Veinte y 33% de los pacientes fueron transfundidos, además 20 y 74% fueron dados de alta a las 72 horas en el GC y GR, respectivamente. CONCLUSIÓN: la mayor PS y porcentaje de cambio de Hcto y Hb se produce a las tres horas postquirúrgicas y empieza su recuperación a las 72-96 horas. El recuperador favorece la recuperación del Hcto, Hb y TAS, disminuye la necesidad de transfusión y favorece el alta precoz.

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PURPOSE: The purpose of this study was to determine whether Tranexamic Acid (TXA) can significantly reduce perioperative blood loss in Total Shoulder Arthroplasty (TSA) performed under regional anesthesia. METHODS: We performed a randomized, single blinded, controlled study. Forty-five patients were submitted to TSA under regional anesthesia to treat cuff tear arthropathy, proximal humeral fractures, chronic instability, primary osteoarthrosis, and failures of previous prosthesis. Patients were randomized to either group TXA therapy (TXA), with 1 g intravenous (IV), or no Intervention (NTXA). Postoperative total drain output, hemoglobin variation, total blood loss, hemoglobin loss, and need for transfusion were measured. Pain-related variables were also assessed: postoperative pain assessment by visual analog scale, inpatient pain breakthrough, quality of recovery, length of stay, and coagulation function testing. RESULTS: Participants presented a mean age of 76 years, 15.6% were male, 82.2% were American Society of Anesthesiologists (ASA) physical status I or II. There were no differences between groups concerning transfusions, operative time, Post-Anesthesia Care Unit (PACU) length of stay and in-hospital stay, and QoR-15 or postoperative pain. Bleeding measured by drain output at 2, 24 and 48 hours was significantly less in the TXA group at each timepoint. There was a difference in Hb variation - TXA: median (IQR) -1.4 (1.3) g.dL-1 vs. NTXA: -2.2 (1.3) g.dL-1; median difference: 0.80 (0.00-1.20); p = 0.047. aPTT was lower in TXA administered patients - TXA: median (IQR) 29.6 (14.0)s vs. NTXA: 33 (5.8)s; difference in medians: -4.00 (-6.50--1.00); p = 0.012. CONCLUSION: TXA use significantly decreased blood loss measured by drain output and Hb drop in TSA under regional anesthesia.

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OBJECTIVE: To evaluate the difference between the total blood loss in patients undergoing primary total knee arthroplasty with and without the use of tourniquet. METHODS: A retrospective cohort study, with analysis of medical records of patients undergoing primary total knee arthroplasty in 2015, with and without the use of a tourniquet. Comparison was performed of hemoglobin (HB) and hematocrit (HT) variation in the complete blood count (CBC) during the pre- and post-operative period between the two groups. RESULTS: There were 117 patients undergoing primary total knee arthroplasty included, minimum age of 33 and maximum of 86 years, with a mean of 67 years. 64.1% of the surgeries used a tourniquet and 35.9% did not. The mean preoperative HB in Group 1 was 13.08 and 12.97 in Group 2 (p = 0.435). The mean postoperative HB in Group 1 was 11.64 and 10.93 in Group 2 (p = 0.016). The variation of HB in Group 1 was 1.44 and 2.04 in Group 2 (p = 0.025). The mean preoperative HT in Group 1 was 38.96 and 39.01 in Group 2 (p = 0.898). The mean postoperative HT in Group 1 was 34.47 and 32.19 in Group 2 (p = 0.005). The variation of HT in Group 1 was 4.49 and 6.82 in Group 2 (p = 0.001). A total of 21 patients received transfusions RCC (red cell concentrates), as a result of HB below 8 g/dL or clinical symptoms, respectively, representing seven of Group 1 (9.3% of total intra-group) and 14 of Group 2 (33.3% of total intra-group), with p = 0.001. CONCLUSION: In patients undergoing primary total knee arthroplasty using a tourniquet, a lower variance in the hematimetric indices was observed and fewer blood transfusions were necessary.

OBJETIVO: Avaliar a diferença entre a perda sanguínea total em pacientes submetidos à artroplastia total do joelho com e sem o uso de garrote. MÉTODOS: Estudo de coorte retrospectivo, com análise dos prontuários de pacientes submetidos a artroplastia primária total de joelho em 2015, com e sem o uso de garrote. Comparou-se a variação de hemoglobina (HB) e hematócrito (HT) no pré- e pós-operatório entre os dois grupos. RESULTADOS: Foram incluídos 117 pacientes submetidos a artroplastia total de joelho primária, idade mínima de 33 e máxima de 86 anos, com média de 67; em 64,1% das cirurgias, foi usado garrote e em 35,9%, não. No pré-operatório, a média da HB no Grupo 1 foi de 13,08; no Grupo 2, 12,97 (p = 0,435). No pós-operatório, a média da HB no Grupo 1 foi de 11,64; no Grupo 2, 10,93 (p = 0,016). A variação da HB no Grupo 1 foi de 1,44; no Grupo 2, de 2,04 (p = 0,025). No pré-operatório, a média do HT no Grupo 1 foi de 38,96; no Grupo 2, de 39,01 (p = 0898). No pós-operatório, a média do HT no Grupo 1 foi de 34,47; no Grupo 2, de 32,19 (p = 0,005). A variação do HT no Grupo 1 foi de 4,49; no Grupo 2, de 6,82 (p = 0,001). Dos pacientes, 21 receberam transfusão de CH (concentração de hemácias), por HB abaixo de 8 ou sintomas clínicos, sete do Grupo 1 (9,3% do total intragrupo) e 14 do Grupo 2 (33,3% do total intragrupo) com p = 0,001. CONCLUSÃO: Nos pacientes submetidos a artroplastia total de joelho primária com o uso de garrote, ocorreu uma menor variância dos índices hematimétricos e um menor número de transfusões sanguíneas foi necessário.

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ABSTRACT OBJECTIVE: To evaluate the difference between the total blood loss in patients undergoing primary total knee arthroplasty with and without the use of tourniquet. METHODS: A retrospective cohort study, with analysis of medical records of patients undergoing primary total knee arthroplasty in 2015, with and without the use of a tourniquet. Comparison was performed of hemoglobin (HB) and hematocrit (HT) variation in the complete blood count (CBC) during the pre- and post-operative period between the two groups. RESULTS: There were 117 patients undergoing primary total knee arthroplasty included, minimum age of 33 and maximum of 86 years, with a mean of 67 years. 64.1% of the surgeries used a tourniquet and 35.9% did not. The mean preoperative HB in Group 1 was 13.08 and 12.97 in Group 2 (p = 0.435). The mean postoperative HB in Group 1 was 11.64 and 10.93 in Group 2 (p = 0.016). The variation of HB in Group 1 was 1.44 and 2.04 in Group 2 (p = 0.025). The mean preoperative HT in Group 1 was 38.96 and 39.01 in Group 2 (p = 0.898). The mean postoperative HT in Group 1 was 34.47 and 32.19 in Group 2 (p = 0.005). The variation of HT in Group 1 was 4.49 and 6.82 in Group 2 (p = 0.001). A total of 21 patients received transfusions RCC (red cell concentrates), as a result of HB below 8 g/dL or clinical symptoms, respectively, representing seven of Group 1 (9.3% of total intra-group) and 14 of Group 2 (33.3% of total intra-group), with p = 0.001. CONCLUSION: In patients undergoing primary total knee arthroplasty using a tourniquet, a lower variance in the hematimetric indices was observed and fewer blood transfusions were necessary.

RESUMO OBJETIVO: Avaliar a diferença entre a perda sanguínea total em pacientes submetidos à artroplastia total do joelho com e sem o uso de garrote. MÉTODOS: Estudo de coorte retrospectivo, com análise dos prontuários de pacientes submetidos a artroplastia primária total de joelho em 2015, com e sem o uso de garrote. Comparou-se a variação de hemoglobina (HB) e hematócrito (HT) no pré- e pós-operatório entre os dois grupos. RESULTADOS: Foram incluídos 117 pacientes submetidos a artroplastia total de joelho primária, idade mínima de 33 e máxima de 86 anos, com média de 67; em 64,1% das cirurgias, foi usado garrote e em 35,9%, não. No pré-operatório, a média da HB no Grupo 1 foi de 13,08; no Grupo 2, 12,97 (p = 0,435). No pós-operatório, a média da HB no Grupo 1 foi de 11,64; no Grupo 2, 10,93 (p = 0,016). A variação da HB no Grupo 1 foi de 1,44; no Grupo 2, de 2,04 (p = 0,025). No pré-operatório, a média do HT no Grupo 1 foi de 38,96; no Grupo 2, de 39,01 (p = 0898). No pós-operatório, a média do HT no Grupo 1 foi de 34,47; no Grupo 2, de 32,19 (p = 0,005). A variação do HT no Grupo 1 foi de 4,49; no Grupo 2, de 6,82 (p = 0,001). Dos pacientes, 21 receberam transfusão de CH (concentração de hemácias), por HB abaixo de 8 ou sintomas clínicos, sete do Grupo 1 (9,3% do total intragrupo) e 14 do Grupo 2 (33,3% do total intragrupo) com p = 0,001. CONCLUSÃO: Nos pacientes submetidos a artroplastia total de joelho primária com o uso de garrote, ocorreu uma menor variância dos índices hematimétricos e um menor número de transfusões sanguíneas foi necessário.

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Objective: To analyze the relationship between hematimetric variation and the presence of clinical symptoms of hypoperfusion for indicating blood transfusion in patients undergoing total knee arthroplasty. Methods: A retrospective analysis was conducted on data gathered from the medical files of 55 patients with a diagnosis of gonarthrosis, who underwent total knee arthroplasty at a hospital orthopedics and traumatology service between February 2011 and December 2012. The patients studied presented unilateral joint degeneration and fitted into the indications for surgical treatment. All the patients underwent a preoperative cardiological evaluation, presenting a pattern of ASA I–III and absence of blood dyscrasia, and preoperative hemoglobin measurements were made. However, no minimum hematimetric value was established for the surgical treatment; there were only clinical criteria for blood perfusion. Results: Among the 55 patients, 35 were female and 20 were male, and the mean age was 68 years. Six patients underwent homologous blood transfusion, because of their clinical condition of tissue hypoperfusion, persistent hypotension, loss of consciousness, sweating and coercible vomiting. They presented postoperative hemoglobin of 7.5–8.8 g/dL. Conclusion: For patients with falls in hemoglobin counts greater than 20% and values lower than 9 g/dL after the surgery, there is a possible need for blood transfusion, which should only be indicated when accompanied by major symptoms of tissue hypoperfusion...

Objetivo: Analisar a relação entre a variação hematimétrica e a presença de sintomas clínicos de hipoperfusão para a indicação de transfusão sanguínea em pacientes submetidos a artroplastia total do joelho. Métodos: Fez-se uma análise retrospectiva dos dados coletados nos prontuários de 55 pacientes com diagnóstico de gonartrose submetidos a artroplastia unilateral total do joelho feita pelo serviço de ortopedia e traumatologia de um hospital de fevereiro de 2011 a dezembro de 2012. Os pacientes estudados apresentaram degeneração articular unilateral e se enquadraram na indicação para o tratamento cirúrgico. Todos foram submetidos a avaliação pré-operatória cardiológica e manteve-se um padrão correspondente a ASA-I até III, ausência de discrasia sanguínea e mensuração de hemoglobina pré-operatória. Porém, não foi estabelecido valor hematimétrico mínimo para o tratamento cirúrgico, apenas critérios clínicos de perfusão sanguínea. Resultados: Dos 55 pacientes, 35 do sexo feminino e 20 do masculino, com média de 68 anos, apenas seis foram submetidos a transfusão sanguínea homóloga, decorrente do quadro clínico de hipoperfusão tecidual, hipotensão persistente, perda da consciência, sudorese e vômitos coercíveis e apresentaram hemoglobina pós-operatória entre 7,5 e 8,8 g/dL. Conclusão: Pacientes com queda acima de 20% na contagem de hemoglobina e valores abaixo de 9 g/dL após a cirurgia sugerem uma possível necessidade de transfusão sanguínea, que só deve ser indicada quando acompanhada de sintomas maiores de hipoperfusão tecidual...

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OBJECTIVE: To analyze the relationship between hematimetric variation and the presence of clinical symptoms of hypoperfusion for indicating blood transfusion in patients undergoing total knee arthroplasty. METHODS: A retrospective analysis was conducted on data gathered from the medical files of 55 patients with a diagnosis of gonarthrosis, who underwent total knee arthroplasty at a hospital orthopedics and traumatology service between February 2011 and December 2012. The patients studied presented unilateral joint degeneration and fitted into the indications for surgical treatment. All the patients underwent a preoperative cardiological evaluation, presenting a pattern of ASA I-III and absence of blood dyscrasia, and preoperative hemoglobin measurements were made. However, no minimum hematimetric value was established for the surgical treatment; there were only clinical criteria for blood perfusion. RESULTS: Among the 55 patients, 35 were female and 20 were male, and the mean age was 68 years. Six patients underwent homologous blood transfusion, because of their clinical condition of tissue hypoperfusion, persistent hypotension, loss of consciousness, sweating and coercible vomiting. They presented postoperative hemoglobin of 7.5-8.8 g/dL. CONCLUSION: For patients with falls in hemoglobin counts greater than 20% and values lower than 9 g/dL after the surgery, there is a possible need for blood transfusion, which should only be indicated when accompanied by major symptoms of tissue hypoperfusion.

OBJETIVO: Analisar a relação entre a variação hematimétrica e a presença de sintomas clínicos de hipoperfusão para a indicação de transfusão sanguínea em pacientes submetidos a artroplastia total do joelho. MÉTODOS: Fez-se uma análise retrospectiva dos dados coletados nos prontuários de 55 pacientes com diagnóstico de gonartrose submetidos a artroplastia unilateral total do joelho feita pelo serviço de ortopedia e traumatologia de um hospital de fevereiro de 2011 a dezembro de 2012. Os pacientes estudados apresentaram degeneração articular unilateral e se enquadraram na indicação para o tratamento cirúrgico. Todos foram submetidos a avaliação pré-operatória cardiológica e manteve-se um padrão correspondente a ASA-I até III, ausência de discrasia sanguínea e mensuração de hemoglobina pré-operatória. Porém, não foi estabelecido valor hematimétrico mínimo para o tratamento cirúrgico, apenas critérios clínicos de perfusão sanguínea. RESULTADOS: Dos 55 pacientes, 35 do sexo feminino e 20 do masculino, com média de 68 anos, apenas seis foram submetidos a transfusão sanguínea homóloga, decorrente do quadro clínico de hipoperfusão tecidual, hipotensão persistente, perda da consciência, sudorese e vômitos coercíveis e apresentaram hemoglobina pós-operatória entre 7,5 e 8,8 g/dL. CONCLUSÃO: Pacientes com queda acima de 20% na contagem de hemoglobina e valores abaixo de 9 g/dL após a cirurgia sugerem uma possível necessidade de transfusão sanguínea, que só deve ser indicada quando acompanhada de sintomas maiores de hipoperfusão tecidual.

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OBJECTIVES: To evaluate the effect of the intraoperative use of hydroxyethyl starch on the need for blood products in the perioperative period of oncologic surgery. The secondary end-points included the need for other blood products, the clotting profile, the intensive care unit mortality and length of stay. METHODS: Retrospective observational analysis in a tertiary oncologic ICU in Brazil including 894 patients submitted to oncologic surgery for a two-year period from September 2007. Patients were grouped according to whether hydroxyethyl starch was used during surgery (hydroxyethyl starch and No-hydroxyethyl starch groups) and compared using a propensity score analysis. A total of 385 propensity-matched patients remained in the analysis (97 in the No-hydroxyethyl starch group and 288 in the hydroxyethyl starch group). RESULTS: A higher percentage of patients in the hydroxyethyl starch group required red blood cell transfusion during surgery (26% vs. 14%; p = 0.016) and in the first 24 hours after surgery (5% vs. 0%; p = 0.015) but not in the 24- to 48-hour period after the procedure. There was no difference regarding the transfusion of other blood products, intensive care unit mortality or length of stay. CONCLUSION: Hydroxyethyl starch use in the intraoperative period of major oncologic surgery is associated with an increase in red blood cell transfusions. There are no differences in the need for other blood products, intensive care unit length of stay or mortality. .

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