CARDIAC REHABILITATION FOR WOMEN WITH BREAST CANCER AND TREATMENT-RELATED HEART FAILURE COMPARED WITH CORONARY ARTERY DISEASE: A RETROSPECTIVE STUDY

Objective: To examine clinical outcomes and completion rates of cardiac rehabilitation in women with breast cancer and treatment-related heart failure. Methods: Data for women with breast cancer and treatment-related heart failure were compared with those for age-matched women with coronary artery disease. Retrospective data were obtained from the Toronto Rehabilitation Institute database for dates between 1998 and 2011, for cardiopulmonary exercise test results at baseline and 6 months, body composition measures, and cardiac rehabilitation completion rates. Results: A total of 29 women with breast cancer and treatment-related heart failure (mean 57 years (standard deviation (SD) 9.4)) and 29 age-matched women with coronary artery disease were identified. There was no significant difference between the proportion of women with breast cancer and treatment-related heart failure and those with coronary artery disease who completed the programme. Peak aerobic power (VO2peak) increased in the breast cancer and treatment-related heart failure group (mean 16.2 ml(-1.)kg(-1.)min(-1) (SD 3.4) to mean 18.5 ml(-1.)kg(-1.) min(-1) (SD 4.5); p=0.002) and in the coronary artery disease group (mean 18.9 ml(-1.)kg(-1.)min(-1) (SD 4.5) to mean 20.8 ml(-1.)kg(-1.)min(-1) (SD 4.9); p=0.01). Body fat percentage increased in the breast cancer and treatment-related heart failure group (mean 34.8% (SD 8.5) to mean 36.3% (SD 6.9); p=0.04). Conclusion: Women with breast cancer and treatment-related heart failure participating in cardiac rehabilitation demonstrate similar significant gains in VO2peak and similar completion rates to those of age-matched women with coronary artery disease. Further research is needed to determine interventions that improve body composition in women with breast cancer and treatment-related heart failure.