ArticlePloS one2026
Postoperative renal dysfunction and associated perioperative factors among patients undergoing major vascular surgery at Tikur Anbessa Specialized Hospital, Addis Ababa, Ethiopia.
Article in PloS one, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundPostoperative renal dysfunction (PORD) is a common and serious complication following major vascular surgery and is associated with prolonged hospitalization, renal replacement therapy, and mortality. However, evidences regarding its incidence and associated perioperative factors in resource-limited settings such as Ethiopia remains scarce.
objectiveTo determine the incidence, severity distribution, and perioperative factors associated with PORD among patients undergoing major vascular surgery at Tikur Anbessa Specialized Hospital.
methodsA retrospective cross-sectional study was conducted at Tikur Anbessa Specialized Hospital, Addis Ababa, Ethiopia, between January 2018 and December 2024. A total of 377 adult patients who underwent major vascular surgery were included. Renal outcomes were defined and staged according to the kidney disease: Improving Global Outcomes (KDIGO) criteria. Multivariable logistic regression was performed to identify factors independently associated with PORD. Adjusted odds ratios (AOR) with 95% confidence intervals (CI) were reported.
resultsPORD occurred in 22.5% of patients (95% CI: 18.4-26.9%). Among affected patients, 61.2% had mild dysfunction (Stage 1), 24.7% moderate dysfunction (Stage 2), and 14.1% severe dysfunction (Stage 3). Factors independently associated with PORD included age ≥ 60 years (AOR = 5.99, 95% CI: 3.32-10.80), chronic kidney disease (AOR = 3.49, 95% CI: 1.52-8.03), diabetes mellitus (AOR = 2.37, 95% CI: 1.23-4.57), intraoperative blood loss ≥500 mL (AOR = 4.63, 95% CI: 2.13-10.09), and inadequate urine output (AOR = 2.36, 95% CI: 1.13-4.92).
conclusionsPORD affected nearly one-quarter of patients undergoing major vascular surgery, with most cases classified as mild dysfunction. Advanced age, chronic kidney disease, diabetes mellitus, excessive intraoperative blood loss, and inadequate urine output were significantly associated with PORD. Enhanced perioperative risk assessment and optimization of comorbidities, and careful intraoperative monitoring may help reduce postoperative renal dysfunction in major vascular surgery patients.
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