The impact of center volume on survival in lung transplantation: an analysis of more than 10,000 cases. The Annals of thoracic surgery [Ann Thorac Surg] Journal article | | Title | The impact of center volume on survival in lung transplantation: an analysis of more than 10,000 cases. | | Author(s) | Weiss ES, Allen JG, Meguid RA, Patel ND, Merlo CA, Orens JB, Baumgartner WA, Conte JV, Shah AS | | Institution | Division of Cardiac Surgery, Department of Surgery, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21287, USA. | | Source | Ann Thorac Surg 2009 Oct; 88(4):1062-70. | | MeSH | Adult
Aged
Confidence Intervals
Female
Follow-Up Studies
Hospital Mortality
Hospitals, District
Humans
Lung Transplantation
Male
Middle Aged
Proportional Hazards Models
Registries
Retrospective Studies
Survival Rate
Treatment Outcome
United States
| | Abstract | BACKGROUND: Whether center volume influences outcomes in lung transplantation is unknown. We reviewed United Network for Organ Sharing data to examine the effect of center volume on short-term mortality.
METHODS: We reviewed United Network for Organ Sharing data (1998 through 2007) to identify 10,496 first-time adult lung transplantation recipients at 79 centers. Centers were stratified by quartiles of mean annual volume. Risk of 30-day mortality and 1- and 5-year mortality (censored for 30-day death) were assessed by multivariable Cox proportional hazards regression.
RESULTS: Mean center volume ranged from less than 1 to 58.2 (median, 9.4 cases/year; volume quartiles: 0 to 2.1, 2.2 to 9.4, 9.5 to 19.9, and 20 to 58.2 cases). Each 1 case/year decrease led to a 2% increase in 30-day mortality (hazard ratio, 1.02; 95% confidence interval, 1.01 to 1.02; p < 0.001). Centers of lowest quartile (performing <or=2.1 lung transplantations/year) had a 30-day cumulative mortality of 9.6% or 89% increase in the risk of death (hazard ratio, 1.89; 95% confidence interval, 1.01 to 3.44; p = 0.05) compared with the highest quartile centers despite fewer idiopathic pulmonary fibrosis patients (15.6% versus 25.8%; p < 0.001) and younger age (40.9 versus 51.5 years; p < 0.001). Low-volume centers had double the risk of 30-day censored 1-year mortality (hazard ratio, 1.95; 95% confidence interval, 1.30 to 2.92; p = 0.001). High-volume centers (>or=20 lung transplantations/year) had the lowest 30-day mortality (4.1%).
CONCLUSIONS: We provide an initial examination of the relationship of volume and lung allocation score to outcomes for lung transplantation. Low center volume is associated with increased short-term and cumulative mortality despite fewer idiopathic pulmonary fibrosis patients and younger patients. | | Language | eng | | Pub Type(s) | Comparative Study
Journal Article
Multicenter Study
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S.
| | PubMed ID | 19766782 |
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