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  • Title: Single- Versus Double-Lung Transplantation in Pulmonary Fibrosis: Impact of Age and Pulmonary Hypertension.
    Author: Villavicencio MA, Axtell AL, Osho A, Astor T, Roy N, Melnitchouk S, D'Alessandro D, Tolis G, Raz Y, Neuringer I, Sundt TM.
    Journal: Ann Thorac Surg; 2018 Sep; 106(3):856-863. PubMed ID: 29803692.
    Abstract:
    BACKGROUND: Double-lung transplantation (DLT) has better long-term outcomes compared with single-lung transplantation (SLT) in pulmonary fibrosis. However, controversy persists about whether older patients or patients with high lung allocation scores would benefit from DLT. Moreover, the degree of pulmonary hypertension in which SLT should be avoided is unknown. METHODS: A retrospective analysis using the United Network for Organ Sharing database was performed in all recipients of lung transplants for pulmonary fibrosis. Kaplan-Meier survival for SLT versus DLT was compared and stratified by age, allocation score, and mean pulmonary artery pressure. Cox regression and propensity-matching analyses were performed. RESULTS: Between 1987 and 2015; 9,191 of 29,779 lung transplants were performed in pulmonary fibrosis. Ten-year survival rates were 55% for DLT and 32% for SLT (p < 0.001). When stratified by age, DLT recipients had improved survival at all age cutoffs, except age ≥70 years. In addition, DLT recipients had improved survival across all lung allocation scores (<45, ≥45, ≥60, ≥75) and all pulmonary artery pressure categories (<25, ≥25, ≥30, ≥40 mm Hg). Among DLT recipients, pulmonary artery pressure and allocation score did not affect survival. Among SLT recipients, a pressure ≥25 mm Hg did not influence survival. Conversely, patients with a pressure ≥30 mm Hg and an allocation score ≥45 had decreased survival. On Cox regression and on propensity matching, DLT had improved survival compared with SLT. CONCLUSIONS: In pulmonary fibrosis, DLT has improved survival compared with SLT and should be considered the procedure of choice in patients younger than 70 years of age. SLT in patients with mean pulmonary artery pressure ≥30 mm Hg and an allocation score ≥45 should be discouraged.
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