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In Taiwan, patients with pulmonary hypertension (PH) related to chronic obstructive pulmonary disease (COPD) are most common PH population (group 3). However, efficacy of medical treatments and optimal prevention methods in this group remain uncertain. Statins such as indirect RhoA/Rho-kinase inhibitors influence one of key signalling pathways that promote PH onset. In this study, we explored protective effects of statins against PH in COPD patients using database from Taiwan National Health Insurance programme from 2002 to 2017. The main outcome was the risk of PH. The Cox proportional-hazards model and the Fine and Gray model were used to adjust covariate and competing risks to estimate the subdistribution hazard ratios (sHRs). 553,617 newly diagnosed COPD patients were stratified by statin users (n = 41,168) and statin nonusers (n = 512,449). After 1:1 propensity score matching of statin users (n = 41,163), and 41,163 statin nonusers were included for outcome analysis. Statin users had a 22% lower risk of PH than nonusers (sHR: 0.78, 95% confidence interval: 0.65–0.94). During subgroup analysis, taking higher daily doses and for a longer duration displayed a more significantly reduced risk of PH (both P for trend <0.001). Statins may have a protective effect against PH that is dose- and time-dependent.

scientific reports

Protective Effect of Statins on Pulmonary Hypertension in Chronic Obstructive Pulmonary Disease Patients: A Nationwide Retrospective, Matched Cohort Study