The effect of primary graft dysfunction on survival after lung transplantation

JD Christie, RM Kotloff, VN Ahya, G Tino… - American journal of …, 2005 - atsjournals.org
JD Christie, RM Kotloff, VN Ahya, G Tino, A Pochettino, C Gaughan, E DeMissie, SE Kimmel
American journal of respiratory and critical care medicine, 2005atsjournals.org
Rationale: Primary graft dysfunction is a severe acute lung injury syndrome after lung
transplantation. Long-term outcomes of subjects with primary graft dysfunction have not
been studied. Objectives: We sought to test the relationship of primary graft dysfunction with
both short-and long-term mortality using a large registry. Methods: We used data collected
on 5,262 patients in the United Network for Organ Sharing/International Society of Heart and
Lung Transplantation registry between 1994 and 2000. We assessed outcomes in all …
Rationale
Primary graft dysfunction is a severe acute lung injury syndrome after lung transplantation. Long-term outcomes of subjects with primary graft dysfunction have not been studied.
Objectives
We sought to test the relationship of primary graft dysfunction with both short- and long-term mortality using a large registry.
Methods
We used data collected on 5,262 patients in the United Network for Organ Sharing/International Society of Heart and Lung Transplantation registry between 1994 and 2000. We assessed outcomes in all subjects; to assess potential bias from the effects of early mortality, we also evaluated subjects who survived at least 1 year, using Cox proportional hazards models with time-varying covariates.
Main Results
The overall incidence of primary graft dysfunction was 10.2% (95% confidence intervals [CI], 9.2, 10.9). The incidence did not vary by year over the period of observation (p = 0.22). All-cause mortality at 30 days was 42.1% for primary graft dysfunction versus 6.1% in patients without graft dysfunction (relative risk = 6.95; 95% CI, 5.98, 8.08; p < 0.001); among subjects who died by 30 days, 43.6% had primary graft dysfunction. Among patients surviving at least 1 year, those who had primary graft dysfunction had significantly worse survival over ensuing years (hazard ratio, 1.35; 95% CI, 1.07, 1.70; p = 0.011). Adjustment for clinical variables including bronchiolitis obliterans syndrome did not change this relationship.
Conclusion
Primary graft dysfunction contributes to nearly half of the short-term mortality after lung transplantation. Survivors of primary graft dysfunction have increased risk of death extending beyond the first post-transplant year.
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