he number of people who survive myocardial infarction or undergo percutaneous coronary intervention (PCI) or coronary artery bypass graft surgery (CABG) is growing. These people require adequate treatment and care not only pharmacologically but also nonpharmacologically: physiotherapeutic, psychological and educational. Comprehensive cardiac rehabilitation (CR) is designed to support patients with coronary heart disease (CHD) in their physical, psychological and emotional recovery after acute coronary events and to help them change lifestyle and risk factors, as well as to make their lives longer and improve their quality.Most published studies analyzing the effects of CR have revealed a reduction in total mortality by an average of 30% and cardiovascular mortality by an average of 40% [1][2][3][4][5][6][7][8][9][10] and also reduction in cardiovascular events risk. 1,4,11 Recently, not only mortality and morbidity but also healthrelated quality of life (QOL) has become a key goal for patients with CHD. Many published studies have revealed improvements in the health-related QOL of patients with CHD after CR programs, either the residential model or ambulatory CR (ACR). [12][13][14][15][16][17][18][19][20][21][22][23] The aim of this study was to evaluate the impact of different models of CR, residential vs ambulatory, on healthrelated QOL according to the exercise capacity of patients with CHD.
MethodsThis study was designed as a nonrandomized prospective multicenter study in Poland: the National Program of Prevention and Therapy of Cardiovascular Diseases (POLKARD). We studied 562 patients with CHD from 9 centers of CR in Poland. Consecutive patients were referred to 3 ACR and 6 residential CR (RCR) centers no longer than 2 weeks after myocardial infarction or PCI, and no longer than 6 weeks after CABG.The reason for the choice of ACR or RCR center was not the patient's clinical state or risk profile for cardiovascular events, but which type of CR was available where the patient lived. Therefore, randomization in our study was impossible.The first group consisted of 313 patients aged 56.1±8.8 (Received April 24, 2008; revised manuscript received October 8, 2008; accepted October 26, 2008; released online January 29, 2009) Background: The aim of this study was to evaluate the influence of residential (RCR) vs ambulatory (ACR) cardiac rehabilitation (CR) on health-related quality of life (QOL) connected with changes in exercise capacity of patients with coronary heart disease (CHD).
Methods and Results:The 562 patients with CHD were studied: 313 participants in RCR and 249 participants in ACR. The examination was performed at the beginning of CR and after 8 weeks. QOL was assessed using the EuroQuol 5D (EQ-5D) and SF36 questionnaires. Exercise testing was performed with evaluation of workload during the last stage of the test and rate of perceived exertion intensity. In the first examination, patients from both groups did not differ significantly. After 8 weeks, a similar improvement in QOL was observed in bo...