Objectives To analyze the six-minute walk test (6MWT) and gas exchange of 5 heart transplantation patients and to approach the variation tendency of exercise tolerance, oxygen uptake(VO2) and heart rate chronotropic response. Methods 5 cases of heart transplantation patients (age 25～52 years) were undertaken 6MWT 6～30 months after operation, synchronizing gas exchanging parameters were measured by wireless portable remote sensing K4B2 gas analyzer, 51 normal controls were compared. Results The six-minute walk distance (6MWD) of 5 patients were (592.6±26.7)m (558～625)m, the ascending tendency during exercise was slower, the maximum heart rates were 80%±6% of age-predicting maximal heart rate, lower than normal control (86%); the end point VO2/kg were (21.8±1.4) mL/min·kg (19.94～23.60)mL/min·kg. Conclusions The 6WMD and VO2 of 5 patients reached normal range, but the heart rate chronotropic response and VO2 ascending tendency were slower than those of normal controls.
