Depression and Anxiety as Risk Factors for Morbidity and Mortality After Organ Transplantation: A Systematic Review and Meta-Analysis.

Dew MA, Rosenberger EM, Myaskovsky L, DiMartini AF, DeVito Dabbs AJ, Posluszny DM, Steel J, Switzer GE, Shellmer DA, Greenhouse JB. Depression and Anxiety as Risk Factors for Morbidity and Mortality After Organ Transplantation: A Systematic Review and Meta-Analysis. Transplantation. 2015 May 1; 100(5):988-1003.

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Abstract:

BACKGROUND: Depression and anxiety are common mental health problems in transplant populations. There is mixed evidence concerning whether they increase morbidity and mortality risks after transplantation. If such associations exist, additional risk reduction strategies may be needed. METHODS: Four bibliographic databases were searched from 1981 through September 2014 for studies prospectively examining whether depression or anxiety (determined with diagnostic evaluations or standardized symptom scales) affected risk for posttransplant mortality, graft loss, acute graft rejection, chronic rejection, cancer, infection, and rehospitalization. RESULTS: Twenty-seven studies (10 heart, total n = 1738; 6 liver, n = 1063; 5 kidney, n = 49515; 4 lung, n = 584; 1 pancreas, n = 80; 1 mixed recipient sample, n = 205) were identified. In each, depression and/or anxiety were typically measured before or early after transplantation. Follow-up for outcomes was a median of 5.8 years (range, 0.50-18.0). Depression increased the relative risk (RR) of mortality by 65% (RR, 1.65; 95% confidence interval [95% CI], 1.34-2.05; 20 studies). Meta-regression indicated that risk was stronger in studies that did (vs did not) control for potential confounders (P = .032). Risk was unaffected by type of transplant or other study characteristics. Depression increased death-censored graft loss risk (RR, 1.65; 95% CI, 1.21-2.26, 3 studies). Depression was not associated with other morbidities (each morbidity was assessed in 1-4 studies). Anxiety did not significantly increase mortality risk (RR, 1.39; 95% CI, 0.85-2.27, 6 studies) or morbidity risks (assessed in single studies). CONCLUSIONS: Depression increases risk for posttransplant mortality. Few studies considered morbidities; the depression-graft loss association suggests that linkages with morbidities deserve greater attention. Depression screening and treatment may be warranted, although whether these activities would reduce posttransplant mortality requires study.