Determinants of minute ventilation-carbon dioxide production relationship in Chagas cardiomyopathy

Abstract INTRODUCTION: The minute ventilation-carbon dioxide production relationship (VE/VCO2 slope) is among the main prognostic factors of Chagas cardiomyopathy whose determinants remain unknown. METHODS: Seventy-eight patients with Chagas cardiomyopathy were evaluated using clinical assessment, cardiopulmonary exercise test, echocardiography, and International Physical Activity Questionnaire. RESULTS: Age, functional class, International Physical Activity Questionnaire score, and dilated cardiomyopathy with systolic dysfunction were independent determinants of VE/VCO2 slope, and these variables explained 63% of its variance. CONCLUSIONS: The VE/VCO2 slope was related to age, functional class, physical activity level, and dilated cardiomyopathy with systolic dysfunction in patients with Chagas cardiomyopathy.

Existe associação entre a curvatura lombar, incapacidade e recrutamento dos músculos abdominais com a dor lombar de enfermeiros / Is there association between the degree of lumbar curvature, disability, and the recruitment of abdominal muscles with low back pain in nurses

Dentre as profissões da área da saúde, a enfermagem, em particular, tem sido especialmente afetada por distúrbios musculo esqueléticos como episódios de dor lombar. Alteração no recrutamento dos músculos abdominais e o grau de lordose lombar estão associados à instabilidade segmentar. Objetivo: Avaliar a associação entre a dor lombar e o recrutamento dos músculos abdominais com grau de lordose lombar nos enfermeiros e técnicos de enfermagem do Hospital Paulo de Tarso Geriatria e Reabilitação. Método: Participaram desse estudo 37 enfermeiros, os quais foram submetidos à aplicação de dois questionários e dois testes específicos. Resultados: Durante a realização deste trabalho, foi verificado que as variáveis explicativas correspondem a 37,1% que estão relacionados com a variável resposta, apresentando-se como um modelo estatisticamente significativo (R2 = 0,371; F = 4,723; P = 0,004). Conclusão: De acordo com os resultados obtidos neste trabalho, é necessário o aprofundamento das discussões para investigar a natureza multidimensional da dor lombar e desenvolver estratégias para potencializar as intervenções utilizadas no tratamento e prevenção desta patologia.

Among the professions of health, nursing, in particular, has been especial/y affected by musculoskeletal disorders as back pain. Changes in recruitment of abdominal muscles and the degree of lumbar lordosis are associated with segmental instability. Objective: To evaluate the association between pain and the recruitment of abdominal muscles with a degree of lumbar lordosis in nurses and nursing technicians of Paulo de Tarso Geriatrics and Rehabilitation Hospital. Method: The sample was composed by 37 nurses, which were submitted to two questionnaires and two specific tests. Results: During this work it was found that the explanatory variables account for 37.1% that are related to the response variable, presenting itself as a statistical/y significant model (R2=0.371, F=4.723, p=0.004). Conclusion: According to the results obtained in this work, it is necessary to deepen the discussions in order to investigate the multidimensional nature of pain and develop strategies to improve the interventions used in prevention and treatment of this pathology.