Kathleen L Grady1, David Naftel2, Lynne Stevenson3, Mary Amanda Dew4, Gerdi Weidner5, Francis D Pagani6, James K Kirklin2, Susan Myers2, Timothy Baldwin7, James Young8. 1. Division of Cardiac Surgery, Department of Surgery, Northwestern University, Chicago, Illinois. Electronic address: kgrady@nmh.org. 2. Department of Surgery, University of Alabama at Birmingham, Birmingham, Alabama. 3. Cardiovascular Division, Brigham and Women's Hospital, Boston, Massachusetts. 4. Departments of Epidemiology, Biostatistics, and Psychiatry, University of Pittsburgh School of Medicine and Medical Center, Pittsburgh, Pennsylvania. 5. Department of Biology, San Francisco State University, San Francisco, California. 6. Center for Circulatory Support, University of Michigan, Ann Arbor, Michigan. 7. the National Heart, Lung, and Blood Institute, Bethesda, Maryland. 8. Cleveland Clinic Foundation, Cleveland, Ohio.
Abstract
BACKGROUND: The severity of pre-implantation heart failure may affect post-implantation health-related quality of life (HRQOL). The purpose of our study was to examine differences in HRQOL from before mechanical circulatory support (MCS) through 1 year after surgery by Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) patient profiles. METHODS: Data from 1,559 adults with advanced heart failure who received primary continuous-flow pumps between June 23, 2006, and March 31, 2010, and were enrolled in INTERMACS were analyzed. HRQOL data were collected using the EQ-5D-3L survey before implantation and at 3, 6, and 12 months after implantation. Statistical analyses included chi-square and t-tests, using all available data for each time period. Paired t-tests and sensitivity analyses were also conducted. RESULTS: HRQOL was poor before MCS implantation among patients with INTERMACS profiles 1 to 7 and significantly improved after MCS implantation for all profiles. Stratified by INTERMACS profile, problems within each of the 5 dimensions of HRQOL (i.e., mobility, self-care, usual activities, pain, and anxiety/depression) generally decreased from before to after implantation. By 6 months after implantation, patients with all INTERMACS profiles reported similar frequencies of problems for all HRQOL dimensions. Paired t-tests and sensitivity analyses supported almost all of our findings. CONCLUSIONS: HRQOL is poor among advanced heart failure patients with INTERMACS profiles 1 to 7 before MCS implantation and improves to similar levels for patients who remained on MCS 1 year after surgery. Patients have problems in HRQOL dimensions before and after MCS; however, the frequency of reporting problems decreases for all dimensions within most profiles across time.
BACKGROUND: The severity of pre-implantation heart failure may affect post-implantation health-related quality of life (HRQOL). The purpose of our study was to examine differences in HRQOL from before mechanical circulatory support (MCS) through 1 year after surgery by Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) patient profiles. METHODS: Data from 1,559 adults with advanced heart failure who received primary continuous-flow pumps between June 23, 2006, and March 31, 2010, and were enrolled in INTERMACS were analyzed. HRQOL data were collected using the EQ-5D-3L survey before implantation and at 3, 6, and 12 months after implantation. Statistical analyses included chi-square and t-tests, using all available data for each time period. Paired t-tests and sensitivity analyses were also conducted. RESULTS: HRQOL was poor before MCS implantation among patients with INTERMACS profiles 1 to 7 and significantly improved after MCS implantation for all profiles. Stratified by INTERMACS profile, problems within each of the 5 dimensions of HRQOL (i.e., mobility, self-care, usual activities, pain, and anxiety/depression) generally decreased from before to after implantation. By 6 months after implantation, patients with all INTERMACS profiles reported similar frequencies of problems for all HRQOL dimensions. Paired t-tests and sensitivity analyses supported almost all of our findings. CONCLUSIONS: HRQOL is poor among advanced heart failurepatients with INTERMACS profiles 1 to 7 before MCS implantation and improves to similar levels for patients who remained on MCS 1 year after surgery. Patients have problems in HRQOL dimensions before and after MCS; however, the frequency of reporting problems decreases for all dimensions within most profiles across time.
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