Effect of angiotensin converting enzyme inhibitor and angiotensin II receptor blocker on the patients with sepsis

Background/Aims: Inhibitors of the renin-angiotensin system, angiotensin-converting enzyme (ACE) inhibitors and angiotensin II receptor blockers (ARBs), reportedly have anti-inflammatory effects. This study assessed the association of prior use of ACE inhibitors and ARBs with sepsis-related clinical outcomes. Methods: A population-based observational study was conducted using the Health Insurance Review and Assessment Service claims data. Among the adult patients hospitalized with new onset of sepsis in 2012, patients who took ARBs or ACE inhibitors at least 30 days prior to hospitalization were analyzed. Generalized linear models and logistic regression were used to examine the relation between the prior use of medication and clinical outcomes, such as in-hospital mortality, mechanical ventilation, and length of stay. Results: Of a total of 27,628 patients who were hospitalized for sepsis, the ACE inhibitor, ARB, and non-user groups included 1,214 (4.4%), 3,951 (14.4%), and 22,463 (82.1%) patients, respectively. As the patients in the ACE inhibitor and ARB groups had several comorbid conditions, higher rates of intensive care unit admission, hemodialysis, and mechanical ventilation were observed. However, after covariate adjustment, the use of ACE inhibitor (odds ratio [OR], 0.752; 95% confidence interval [CI], 0.661 to 0.855) or ARB (OR, 0.575; 95% CI, 0.532 to 0.621) was significantly associated with a lower rate of in-hospital mortality. Conclusions: Pre-hospitalization use of ACE inhibitors or ARBs for sepsis was an independent factor for a lower rate of in-hospital mortality.