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Extracorporeal Support During Bilateral Sequential Lung Transplantation in Patients With Pulmonary Hypertension: Risk
Pranav R Shah1, Michael L Boisen1, Daniel G Winger2
1Department of Anesthesiology, University of Pittsburgh Medical Center, Pittsburgh, PA.
Objective:
To identify preoperative predictors of extracorporeal support in patients with pulmonary hypertension (PH) undergoing bilateral sequential lung transplantation (LTx), and to examine outcomes associated with the use of extracorporeal support.
Design:
Retrospective, observational study.
Setting:
Single organ transplantation and tertiary care university medical center.
Participants:
Adults with PH (preoperative mean pulmonary artery pressure (mPAP)≥25 mmHg) who underwent primary bilateral sequential LTx during 2007 to 2013.
Measurements And Main Results:
Of 262 patients with PH undergoing LTx, extracorporeal support was initiated intraoperatively in 149 (57%). Preoperative severe right ventricle (RV) dysfunction and moderate or severe tricuspid regurgitation (TR) were associated with extracorporeal support. In the remaining 208 patients without those factors, increasing preoperative oxygen requirement (odds ratio [OR] 1.30 per 1 L/min, 95% confidence intervals [CI] 1.11-1.52, p = 0.001), presence of RV dilation (OR 2.77, 95% CI 1.28-6.02, p = 0.010), and mPAP (OR 1.33 per 5-mmHg increase in mPAP, 95% CI 1.04-1.70, p = 0.021) were associated independently with extracorporeal support in the multivariable model. Analysis of 49 propensity-matched pairs showed longer intensive care unit (5 v 14 days, p = 0.006) and hospital stays (27 v 39 days, p = 0.016) and increased need for tracheostomy (16% v 41%, p = 0.017) in patients exposed to extracorporeal support but no differences in 30-day mortality, stroke, myocardial infarction, or dialysis.
Conclusions:
Severity of RV dysfunction, TR, RV dilatation, increasing oxygen requirement, and increasing mPAP showed significant associations with the need for extracorporeal support during LTX in patients with PH. Extracorporeal support was associated with increased length of stay and tracheostomy but not with mortality or other complications. © 2016 Elsevier Inc. All rights reserved.
