Capacidade de exercício e seu valor prognóstico no pós-operatório de cirurgia cardíaca

• Autor(a) principal: Bueno, Flávia Regina [UNIFESP]
• Data de Publicação: 2012
• Outros Autores: Corrêa, Fernanda Rocha [UNIFESP], Alves, Mariana Agnes Da Silva [UNIFESP], Bardin, Marcela Grigol [UNIFESP], Modesto, Janaína Aparecida [UNIFESP], Dourado, Victor Zuniga [UNIFESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNIFESP
• Texto Completo: http://dx.doi.org/10.1590/S0103-51502012000400017; http://repositorio.unifesp.br/handle/11600/7402
• topic: Arterial coronary disease; Exercise capacity; ISWT; 6MW; Doença arterial coronariana; Capacidade de exercício; ISWT; TC6

INTRODUCTION: The prognostic value of exercise capacity in patients undergoing coronary artery bypass grafting (CABG) needs clarification. OBJECTIVES: To assess exercise capacity and its prognostic value in patients with coronary artery disease undergoing elective CABG. MATERIALS AND METHODS: We evaluated 21 patients and 29 controls. Two incremental shuttle walk test (ISWT) and two tests of 6-min walk test (6MWT) were performed randomly on alternate days. The handgrip strength (FPM) was also evaluated. RESULTS: The FPM in percentages (78.4 ± 16 vs. 97.2 ± 15%), the 6MWT in meters (412 ± 79 vs. 601 ± 7 m) and percentage values (72 ± 13 vs. 110 ± 11%) and the ISWT in meters (257 ± 90 vs. 517 ± 138 m) and percentage values (53 ± 16 vs. 108 ± 16%) were significantly (p < 0.05) lower in patients. Eleven patients had postoperative complications (group C) and 10 had a good outcome (group SC). The group C showed significantly (p < 0.05), older age (57 ± 6 vs. 71 ± 7 years old), FPM lower (33 ± 6 vs. 9 ± 41 kgf) and ISWT lower (208 ± 81 vs. 311 ± 66 m). There were no significant differences for the 6MWT. Logistic regression analysis comparing the ISWT and 6MWT selected ISWT as a determinant of prognosis of patients (p = 0.04). CONCLUSION: Patients waiting for elective CABG have significantly reduced exercise capacity and ISWT had significant prognostic value discriminating patients with postoperative complications.