Abstract

Primary graft dysfunction (PGD) is the main cause of mortality during the first month and the second one within the first year after lung transplant (LT) Statins, 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA) reductase inhibitors, have shown to have immunomodulatory and antiinflamatory effects unrelated to their cholesterol-lowering function. We hypothesized that recipient's preoperative statin therapy is associated with decreased incidence of PGD after LT. Multicenter retrospective analysis of all consecutive adult LTs performed in 5 university transplant centers between 2015 and 2017. Combined multiple organ transplantation and lung retransplant recipients were excluded from the analysis. Comparison between groups according to recipient previous use of statins(E+/E-)) was performed. Factors associated with the development of PGD and its severity were analyzed using Chisquare and U-Mann Whitney Test. Logistic regression model was built including those variables with p≤0.1 in the univariate analysis. Significance level p<0.05. A total of 474 adult LT recipients were reviewed, 110 of them (E+=23%) were on statins treatment (SG). LT recipients in the statin group were older (60±7 vs 53±12; p<0.05) and had higher Body Mass Index (BMI) (26.3±3.8 vs 24.8±4.2;p<0.05) than those in not taking statins. The rest of recipient and donor characteristics were similar between groups. A total of 161 patients developed PGD (34%), without significative differences between groups (32.2% vs 39%). However PGD in E+ group was significantly less severe as stated by the percentage of patients with grade 3 PGD at 72h (55.9% vs 37.2%,p<0.036). After propensity score adjustments, only the need for hemoderivates transfusion during the implant (OR 4.50 IC 1.51 - 13.38 p<0.007) remained significant. Recipient statin use was not identified as a protective factor (OR 0.38 CI 0.12 - 1.206, p=0.10). Statin use may contribute to lessen the severity of PGD. Prospective and multicentric studies with larger samples are needed to confirm such results.

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