[Effects of physical training on the denervated human heart after orthotopic cardiac transplantation].
Three patients who had undergone an orthotopic cardiac transplantation followed a course of supervised intermittent physical training (60 to 80 per cent of the maximum load) involving three weekly sessions of thirty minutes, for a period of 150 +/- 80 days. During maximal effort, we observed increases of 50 per cent in the load in watts (0.05 less than p less than 0.1), 40 per cent in oxygen consumption (0.1 less than p less than 0.2), 10 per cent in heart rate (p = 0.5) and 21 per cent in systolic blood pressure (0.7 less than p less than 0.8). The respiratory equivalent for oxygen decreased by 21 per cent (0.025 less than p less than 0.05) and the respiratory quotient by 5 per cent (0.4 less than p less than 0.05). For a given submaximal effort (30 watts) the following decreases were observed: 9 per cent in oxygen consumption (V'O2) (0.1 less than p less than 0.2), 32 per cent in the minute ventilation (V'E) (0.05 less than p less than 0.1), 22 per cent in the respiratory equivalent for oxygen (REO2) (0.025 less than p less than 0.05), 8 per cent in the respiratory quotient (RQ) (0.2 less than p less than 0.3) and 11 per cent in the heart rate (HR) (0.1 less than p less than 0.2). The systolic blood pressure (SBP) increased by 6 per cent (0.2 less than p less than 0.3). No changes were observed in these parameters in the postoperative follow-ups (10 to 24 months) of two patients who did not undergo physical training. Physical training is, therefore, necessary in the process of physical readaptation of patients after orthotopic cardiac grafts.
D000328:Adult; D004562:Electrocardiography; D005080:Exercise Test; D006321:Heart / Q000294:innervation / Q000503:physiopathology; D016027:Heart Transplantation; D006801:Humans; D008297:Male; D008875:Middle Aged; D010806:Physical Education and Training; D011184:Postoperative Period
Effets de l'entraînement physique sur le coeur humain dénervé après transplantation cardiaque orthotopique.