Abstract 9061: Relationships Among Satisfaction with Social Support, Perceived Stress, and Coping on Quality of Life and Survival 5 to 10 Years after Heart Transplantation
Introduction: Despite the fact that social support has been found to be important to cardiovascular health, there is a paucity of information regarding the relationship between social support and outcomes long-term after heart transplantation (HT). Thus, the purposes of this prospective, longitudinal study were to examine (1) the relationship between satisfaction with social support and post HT quality of life (QOL) and survival, (2) the predictability of two types of social support (emotional and tangible) and, (3) if social support is a mediator among stress, coping and QOL long-term after heart transplantation.
Methods: Data were collected from 555 patients (pts) (78% male, 88% white, mean age=53.8 years) at 4 U.S. sites using the following instruments: Social Support Index, QOL Index, HT Stressor Scale, Jalowiec Coping Scale, and chart review. Statistical analyses included t-tests, correlations, and linear and multivariable regression.
Results: Twenty percent and 70% of pts reported not needing social support assistance at 5 and 10 years post HT, respectively. Patients were very satisfied with overall social support from 5 to 10 years after HT (mean: 0.04 to 0.07 with 0.0=very satisfied, 0.1=very dissatisfied) which was stable across time (p = 0.74). Satisfaction with emotional social support (p = 0.53) and tangible social support (p = 0.61) also remained stable over time. When stratified into low, medium and high levels of satisfaction, satisfaction with social support was not related to survival (p = 0.24). At 5 years, overall satisfaction with social support was a predictor of QOL (F=31.82, r2=.59, p<.0001), and satisfaction with emotional social support was a predictor of QOL at 10 years post HT (F=21.40, r2=.66, p<.0001). Overall satisfaction with social support partially mediated the effects of stress on quality of life post HT( r2 = 0.456, p<0.0001); however coping did not mediate stress and QOL (r2 = 0.354, p<0.0001).
Conclusions: Patients were very satisfied over time with emotional and tangible social support. While social support explained QOL outcomes, it did not predict survival. Knowledge of relationships among social support, stress, and outcomes may assist clinicians to address social support needs and resources long-term after HT.
- © 2010 by American Heart Association, Inc.