PURPOSE: Patients who have post TB lung disorder usually show stable restrictive or mixed ventilatory disorders and seldom show pure obstructive disorder. This is often associated marked limitation in exercise tolerance and a significant disability affecting their activities of daily living. This study was designed to assess the cardiovascular fitness of patients with pulmonary TB using the six-minute walk test (6-MWT).
METHODS: Sixty five consenting patients with Pulmonary TB were consecutively recruited into the study. They all underwent a 6-minutes walk test over a 30 meter course on a level walkway at a self-determined maximal speed. Patients physical characteristics were noted. The pre and post exercise blood pressure, heart rate, and maximum oxygen consumption was also assessed.
RESULTS: The post walk test cardiovascular parameters were significantly higher than the resting cardiovascular parameters. The mean VO2 max and MET of the participants were 11.7 ± 0.97 (ml O2kg -1min-1) and 3.35 ± 0.28 (mL/Kg) respectively. The means 6-MWT distance for male and female participants were 502.0 ± 43.0m & 481.7 ± 68.3m respectively. The 95% confidence interval for distance covered was (484.0 m - 518.0 m) and (456.2 m –507.2 m) for males and females respectively.
CONCLUSION: The result implies that the 6-MWT is capable of evoking a significant cardiovascular change among patients with pulmonary TB. The 6-MWT may be useful in the assessment of functional capacity of patients with pulmonary TB.
CLINICAL IMPLICATIONS: The six minute walk test may serve as a useful tool in assessing the impact of therapeutic interventions in the course of pulmonary tuberculosis.
DISCLOSURE: Gregory Erhabor, No Financial Disclosure Information; No Product/Research Disclosure Information