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      Assessment of Decline in Health-Related Quality of Life among Angina-Free Patients Undergoing Coronary Artery Bypass Graft Surgery


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          Purpose: Coronary artery bypass graft (CABG) surgery generally decreases symptoms and improves quality of life, but for those patients without angina, prolongation of life takes precedence. We used the SF-36 to assess changes in health-related quality of life (HRQOL) among patients who were angina free prior to CABG compared to those reporting angina. Methods: We combined data from two randomized trials of hemodynamic management during surgery. Prior to CABG, demographic, clinical and SF-36 data were obtained. Patients were reevaluated at a 6-month follow-up. Patients with a decline of ≧15 points from baseline to follow-up for individual SF-36 domains and >5 points for summary components were classified as having a decline. We used logistic regression models that controlled for baseline SF-36 score and other baseline characteristics to assess HRQOL decline with respect to angina status. Results: Of 590 patients, 28% were angina free at baseline. A third of the patients angina free at baseline had a postoperative decline in physical function. Patients who were angina free at baseline were three times more likely to suffer a decline in physical function than those with angina (odds ratio 3.29, 95% confidence interval 1.86–5.82). This finding remained after addition of adverse outcomes to the model. Baseline angina status was not related to any other SF-36 domain or to physical or mental summary component scores. Major adverse outcomes did not differ between angina-free patients and those with angina. Conclusions: The incidence of patients reporting a decline in physical function after CABG was greater in patients without angina preoperatively, even when adjusting for baseline score. Given the substantial risk of decreased physical functioning, employing interventions to maintain HRQOL in this population should be considered.

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          Changes in health-related quality of life following coronary artery bypass graft surgery.

          There are limited data to help clinicians identify patients likely to have an improvement in quality of life following CABG surgery. We evaluated the relationship between preoperative health status and changes in quality of life following CABG surgery. We evaluated 1,744 patients enrolled in the VA Cooperative Processes, Structures, and Outcomes in Cardiac Surgery study who completed preoperative and 6-month postoperative Short Form-36 (SF-36) surveys. The primary outcome was change in the Mental Component Summary (MCS) and Physical Component Summary (PCS) scores from the SF-36. On average, physical and mental health status improved following the operation. Preoperative health status was the major determinant of change in quality of life following surgery, independent of anginal burden and other clinical characteristics. Patients with MCS scores less than 44 or PCS scores less than 38 were most likely to have an improvement in quality of life. Patients with higher preoperative scores were unlikely to have an improvement in quality of life. Patients with preoperative health status deficits are likely to have an improvement in their quality of life following CABG surgery. Alternatively, patients with relatively good preoperative health status are unlikely to have a quality of life benefit from surgery and the operation should primarily be performed to improve survival.
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            ACC/AHA guidelines for coronary artery bypass graft surgery


              Author and article information

              S. Karger AG
              June 2003
              27 June 2003
              : 99
              : 3
              : 115-120
              aGeneral Medicine Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Mass., bDepartment of Medicine, New York-Presbyterian Hospital, Weill Medical College of Cornell University, NewYork,N.Y., cRobert Wood Johnson Foundation, Princeton,N.J.,USA
              70667 Cardiology 2003;99:115–120
              © 2003 S. Karger AG, Basel

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              Page count
              Tables: 3, References: 16, Pages: 6
              General Cardiology


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