Methods: A quasi-randomised controlled trial comparing home-based CR plus usual care (CR group) to usual care alone (UC group) for patients following coronary artery bypass graft (CABG) surgery. CR consisted of an initial CR class, an educational booklet with details of a home-based exercise programme, and monthly telephone calls from a CR team member over a 12-month period. The outcomes of maximal oxygen uptake (VO2max), coronary risk factors, health-related quality of life, and mental health status were collected at baseline between at 3 and 6 months follow-up. Differences in outcomes between groups were compared in patients with complete outcome data.
Results: A total of 142 participants participated in the trial; 71 patients in each group. At 12-months follow-up, 61 (86%) patients in the CR group and 40 (56%) in the UC group provided complete outcome data.VO2maxwas higher in CR compared to UC group (mean difference: 7 ml/kg/min, 95% CI: 2 to 11, P = 0.005).In addition, greater improvements in health-related quality of life, and coronary heart disease (CHD) risk factors were seen for CR group compared to UC group.
Conclusions: In the context of a low-income country, the addition of a home-based CR programme supported by telephone calls following CABG surgery has been shown to provide important patient benefits compared to usual care alone.