OBJECTIVE: To evaluate the effectiveness of pre-operative respiratory muscle training versus conventional treatment for improving post-operative pulmonary health after coronary artery bypass graft surgery (CABG). METHOD(S): A Prospective Randomized clinical trial was performed on sixty patients who underwent elective 6-minutes' walk test (6MWT) as baseline. The subjects were then divided into two groups. The group-I was subjected to respiratory muscle training whereas the group-2 received the routine preoperative care. The (post-operatively). Duration of post-operative mechanical ventilation, oxygen therapy and hospital stay were also noted as outcome measures of this study. RESULT(S): The pre-operative and post-operative readings showed that the patients in the interventional group performed better than the control group in their 6MWT with p-value of less than 0.05. Similarly the interventional group had shorter duration of mechanical ventilation, dependence on oxygen therapy and postoperative hospital stay as compared with the control group showing p-values below 0.05. CONCLUSION(S): The results showed that respiratory muscle training results in improved postoperative functional capacity and reduces of hospital stay.

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