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  • Title: Single vs bilateral, sequential lung transplantation for end-stage emphysema: influence of recipient age on survival and secondary end-points.
    Author: Meyer DM, Bennett LE, Novick RJ, Hosenpud JD.
    Journal: J Heart Lung Transplant; 2001 Sep; 20(9):935-41. PubMed ID: 11557187.
    Abstract:
    BACKGROUND: The appropriate age to perform bilateral, sequential lung transplants (BSLT) in patients with chronic obstructive pulmonary disease (COPD) remains controversial. Although single lung transplant (SLT) offers an advantage in terms of organ availability, the long-term survival may not warrant this strategy in all age groups. METHODS: We analyzed 2,260 lung transplant recipients (1835 SLT, 425 BSLT) with COPD recorded in the International Society for Heart and Lung Transplantation/United Network for Organ Sharing thoracic registry between January 1991 and December 1997. To assess mortality, we performed univariate (Kaplan-Meier method and the chi-square statistic) and multivariate analyses (proportional hazards method). Because of incomplete morbidity data in the international registry, only data from U.S. centers (n = 1778, 1467 SLT, 311 BSLT) were used in the morbidity analysis. RESULTS: Survival rates (%) computed using the Kaplan-Meier method at 30 days, 1 year, and 5 years for the patients aged < 50 years were 93.6, 80.2, and 43.6, respectively, for the SLT patients, and 94.9, 84.7, and 68.2, respectively, for the BSLT patients. For patients aged 50 to 60 years, survival rates (%) were 93.5, 79.4, and 39.8 for the SLT patients compared with 93.0, 79.7, and 60.5 for the BSLT patients. For those aged > 60 years, SLT survival (%) was 93.0, 72.9, and 36.4, compared with 77.8 and 66.0 for the BSLT group (a 5-year rate could not be completed in this group). The multivariate model showed a higher risk ratio for mortality in patients aged 40 to 57 years who received SLT vs BSLT. Recipient age and procedure type did not appear to affect the development of rejection, bronchiolitis obliterans, bronchial stricture, or lung infection. CONCLUSIONS: Single lung transplant may offer acceptable early survival for patients with end-stage respiratory failure. However, long-term survival data favors BSLT in recipients until approximately age 60 years. These data suggest that a BSLT approach offers a significant survival advantage to recipients younger than 60 years of age.
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