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Objective: The aim of this study was to conduct a systematic review and meta-analysis to investigate the effect of the premorbid use of angiotensin-converting enzyme inhibitors or angiotensin II receptor blockers (ACEI/ARB) on short-term mortality in patients with sepsis.Data Sources: Embase, the Cochrane Central Register of Controlled Trials, and MEDLINE were searched for studies based on the below eligibility criteria. The protocol was registered at the PROSPERO (CRD42022309129).Study Selection: Eligibility criteria were as follows: (1) randomized controlled trials, cohort studies, cross-sectional studies, (2) patients with sepsis aged ≥16 years, and (3) received premorbid ACEI/ARB, or not.Data Extraction: The patient and study characteristics and outcomes were extracted. All analyses were presented with the use of random-effects models. The primary outcome was short-term mortality defined as ≤30-day, in-hospital, or intensive care unit (ICU)- mortality. The secondary outcome was acute kidney injury (AKI).Data Synthesis: Fifteen studies (N = 96,159) met the eligibility criteria. Of these, eleven studies (N = 40,360) reported unadjusted short-term mortalities. The pooled odds ratio (OR) of short-term mortality with the premorbid use of ACEI/ARB was as follows: OR, 0.86; 95% confidence interval (CI), 0.67 to 1.11; P = 0.24, I2 = 88%. Five studies reported an adjusted OR of short-term mortality with the premorbid use of ACEI/ARB as follows: OR, 0.74; 95%CI, 0.59 to 0.93; P < 0.01, I2 = 93%. Seven studies reported the pooled adjusted OR of AKI with the premorbid use of ACEI/ARB as follows: OR: 1.57, 95%CI: 1.26-1.96, p < 0.01, I2 = 69%.Conclusion: In this meta-analysis, the premorbid ACEI/ARB was associated with significantly lower short-term mortality in patients with sepsis despite the significantly higher risk of AKI. [ABSTRACT FROM AUTHOR]