RESUMO O avanço científico e tecnológico associado à atuação de equipes multidisciplinares nas unidades de terapia intensiva tem aumentado a sobrevida de pacientes críticos. Dentre os recursos de suporte de vida utilizados em terapia intensiva, está a oxigenação por membrana extracorpórea. Apesar das evidências aumentarem, faltam dados para demonstrar a segurança e os benefícios da fisioterapia concomitante ao uso da oxigenação por membrana extracorpórea. Esta revisão reúne as informações disponíveis sobre a repercussão clínica da fisioterapia em adultos submetidos à oxigenação por membrana extracorpórea. A revisão incluiu as bases MEDLINE®, PEDro, Cochrane CENTRAL, LILACS e EMBASE, além da busca manual nas referências dos artigos relacionados até setembro de 2017. A busca resultou em 1.213 registros. Vinte estudos foram incluídos, fornecendo dados de 317 indivíduos (58 no grupo controle). Doze estudos não relataram complicações durante a fisioterapia. Fratura da cânula durante a deambulação, trombo na cânula de retorno e hematoma na perna em um paciente cada foram relatados por dois estudos, dessaturação e vertigens leves foram relatadas em dois estudos. Por outro lado, foram feitos relatos de melhora na condição respiratória/pulmonar, capacidade funcional e força muscular, com redução de perda de massa muscular, incidência de miopatia, tempo de internação e mortalidade dos pacientes que realizaram a fisioterapia. Analisando o conjunto das informações disponíveis, pode-se observar que a fisioterapia, incluindo a mobilização precoce progressiva, ortostase, deambulação e técnicas respiratórias, executada de forma simultânea à oxigenação por membrana extracorpórea, é viável, relativamente segura e potencialmente benéfica para adultos em condição clínica extremamente crítica.

Abstract Scientific and technological advances, coupled with the work of multidisciplinary teams in intensive care units, have increased the survival of critically ill patients. An essential life support resource used in intensive care is extracorporeal membrane oxygenation. Despite the increased number of studies involving critically ill patients, few studies to date have demonstrated the safety and benefits of physical therapy combined with extracorporeal membrane oxygenation support. This review identified the clinical outcomes of physical therapy in adult patients on extracorporeal membrane oxygenation support by searching the MEDLINE®, PEDro, Cochrane CENTRAL, LILACS, and EMBASE databases and by manually searching the references of the articles published until September 2017. The database search retrieved 1,213 studies. Of these studies, 20 were included in this review, with data on 317 subjects (58 in the control group). Twelve studies reported that there were no complications during physical therapy. Cannula fracture during ambulation (one case), thrombus in the return cannula (one case), and leg swelling (one case) were reported in two studies, and desaturation and mild vertigo were reported in two studies. In contrast, improvements in respiratory/pulmonary function, functional capacity, muscle strength (with reduced muscle mass loss), incidence of myopathy, length of hospitalization, and mortality in patients who underwent physical therapy were reported. The analysis of the available data indicates that physical therapy, including early progressive mobilization, standing, ambulation, and breathing techniques, together with extracorporeal membrane oxygenation, is feasible, relatively safe, and potentially beneficial for critically ill adult patients.

ABSTRACT Considering that thiol-containing enzymes like kinases are critical for several metabolic pathways and energy homeostasis, we investigated the effects of cystine dimethyl ester and/or cysteamine administration on kinases crucial for energy metabolism in the kidney of Wistar rats. Animals were injected twice a day with 1.6 µmol/g body weight cystine dimethyl ester and/or 0.26 µmol/g body weight cysteamine from the 16th to the 20th postpartum day and euthanized after 12 hours. Pyruvate kinase, adenylate kinase, creatine kinase activities and thiol/disulfide ratio were determined. Cystine dimethyl ester administration reduced thiol/disulfide ratio and inhibited the kinases activities. Cysteamine administration increased the thiol/disulfide ratio and co-administration with cystine dimethyl ester prevented the inhibition of the enzymes. Regression between the thiol/disulfide ratio, and the kinases activities were significant. These results suggest that redox status may regulate energy metabolism in the rat kidney. If thiol-containing enzymes inhibition and oxidative stress occur in patients with cystinosis, it is possible that lysosomal cystine depletion may not be the only beneficial effect of cysteamine administration, but also its antioxidant and thiol-protector effect.

RESUMO Objetivo: Revisar na literatura os efeitos da manobra de compressão torácica expiratória sobre a mecânica ventilatória, a desobstrução brônquica, e os índices de oxigenação e hemodinâmica de pacientes adultos ventilados mecanicamente. Métodos: Foi realizada uma revisão sistemática com metanálise de ensaios clínicos randomizados nas bases de dados MEDLINE (via PubMed), EMBASE, Cochrane CENTRAL, PEDro e LILACS. Foram incluídos estudos com pacientes adultos, internados em unidades de terapia intensiva, ventilados mecanicamente, que comparavam os efeitos da manobra de compressão torácica expiratória com grupo controle (sem manobra de compressão torácica expiratória) e que avaliaram os seguintes desfechos: complacência estática e dinâmica, volume de secreção depurado, pressão arterial sistólica, pressão arterial diastólica, pressão arterial média, frequência cardíaca, saturação periférica de oxigênio e relação entre pressão arterial de oxigênio e fração inspirada de oxigênio. Foram excluídos estudos experimentais com animais e estudos com dados incompletos. Resultados: A estratégia de busca resultou em 5.816 estudos, sendo incluídos apenas três estudos randomizados com crossover, totalizando 93 pacientes. No desfecho de frequência cardíaca, observou-se redução a favor da manobra de compressão torácica expiratória, comparada com o grupo controle [-2,81bpm (IC95%: -4,73 a 0,89; I2: 0%)]. Na complacência dinâmica, não foi observada diferença significativa entre os grupos [-0,58mL/cmH2O (IC95%: -2,98 a 1,82; I2: 1%)]. Nas variáveis, pressão arterial sistólica e pressão arterial diastólica após avaliação descritiva, foram encontradas diferenças significativas, entretanto, para variáveis volume de secreção, complacência estática, relação pressão arterial de oxigênio por fração inspirada de oxigênio e saturação periférica de oxigênio, não foram encontradas diferenças entre os grupos. Conclusão: Faltam evidências que sustentem o uso da manobra de compressão torácica expiratória na rotina assistencial, pois a literatura sobre o tema é de baixa qualidade metodológica e inconclusiva.

ABSTRACT Objective: To review the literature on the effects of expiratory rib cage compression on ventilatory mechanics, airway clearance, and oxygen and hemodynamic indices in mechanically ventilated adults. Methods: Systematic review with meta-analysis of randomized clinical trials in the databases MEDLINE (via PubMed), EMBASE, Cochrane CENTRAL, PEDro, and LILACS. Studies on adult patients hospitalized in intensive care units and under mechanical ventilation that analyzed the effects of expiratory rib cage compression with respect to a control group (without expiratory rib cage compression) and evaluated the outcomes static and dynamic compliance, sputum volume, systolic blood pressure, diastolic blood pressure, mean arterial pressure, heart rate, peripheral oxygen saturation, and ratio of arterial oxygen partial pressure to fraction of inspired oxygen were included. Experimental studies with animals and those with incomplete data were excluded. Results: The search strategy produced 5,816 studies, of which only three randomized crossover trials were included, totaling 93 patients. With respect to the outcome of heart rate, values were reduced in the expiratory rib cage compression group compared with the control group [-2.81 bpm (95% confidence interval [95%CI]: -4.73 to 0.89; I2: 0%)]. Regarding dynamic compliance, there was no significant difference between groups [-0.58mL/cmH2O (95%CI: -2.98 to 1.82; I2: 1%)]. Regarding the variables systolic blood pressure and diastolic blood pressure, significant differences were found after descriptive evaluation. However, there was no difference between groups regarding the variables secretion volume, static compliance, ratio of arterial oxygen partial pressure to fraction of inspired oxygen, and peripheral oxygen saturation. Conclusion: There is a lack of evidence to support the use of expiratory rib cage compression in routine care, given that the literature on this topic offers low methodological quality and is inconclusive.

ABSTRACT OBJECTIVE: To compare the efficacy of a cycle ergometer-based exercise program to a standard protocol on the increment of the maximum distance walked during the six-minute walk test in the postoperative rehabilitation of patients submitted to coronary artery bypass grafting. METHODS: A controlled clinical trial pilot, blinded to the outcome, enrolled subjects who underwent coronary artery bypass grafting in a hospital from Southern Brazil. Subjects were designated for the standard physical rehabilitation protocol or to an alternative cycle ergometer-based protocol through simple random sampling. The primary outcome was the difference in the maximum distance walked in the six-minute walk test before and after the allocated intervention. RESULTS: Twenty-four patients were included in the analysis, 10 in the standard protocol and 14 in the alternative protocol group. There was an increment in the maximum distance walked in both groups, and borderline superiority in the intervention group comparing to the control group (312.2vs. 249.7; P=0.06). CONCLUSION: There was an increase in the maximum distance walked in the alternative protocol compared to the standard protocol. Thus, it is postulated that the use of a cycle ergometer can be included in physical rehabilitation in the hospital phase of postoperative coronary artery bypass grafting. However, randomized studies with larger sample size should be conducted to assess the significance of these findings.