Abstract

Background and aimsCOVID-19-associated acute kidney injury (AKI) represents an independent risk factor for all-cause in-hospital death in patients with COVID-19. Chronic statin therapy use is highly prevalent in individuals at risk for severe COVID-19. Our aim is to assess whether patients under treatment with statins have a lower risk of AKI and in-hospital mortality during hospitalization for interstitial SARS-CoV2 pneumonia. Methods and resultsOur study is a prospective observational study on 269 consecutive patients admitted for COVID-19 pneumonia at the Internal Medicine Unit of IRCCS Sant'Orsola Hospital in Bologna, Italy. We compared the clinical characteristics between patients receiving statin therapy (n = 65) and patients not treated with statins and we assessed if chronic statin use was associated with a reduced risk for AKI, all-cause mortality, admission to ICU, and disease severity. Statin use was associated with a significant reduction in the risk of developing AKI (OR 0.47, IC 0.23 to 0.95, p 0.036) after adjustment for age, sex, BMI, hypertension, diabetes, and chronic kidney disease (CKD). Additionally, statin use was associated with reduced C-reactive protein (CRP) levels (p 0.048) at hospital admission. No significant impact in risk of all-cause mortality (HR 1.98, IC 0.71 to 5.50, p 0.191) and ICU admission (HR 0.93, IC 0.52 to 1.65, p 0.801) was observed with statin use, after adjustment for age, sex, BMI, hypertension, diabetes, and CKD. ConclusionThe present study shows a potential beneficial effect of statins in COVID-19-associated AKI. Furthermore, patients treated with statins before hospital admission for COVID-19 may have lower systemic inflammation levels.

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