Duration of Intraoperative Hypotension as a Risk factor for Acute Kidney Injury after Cardiac Surgery

Abstract

Background

Intraoperative hypotension is a common occurrence during cardiac surgery and has been associated with various postoperative complications, including acute kidney injury (AKI). Understanding the relationship between the duration of hypotension and the risk of developing AKI is crucial for improving patient outcomes.

Objective

This study aims to evaluate the effect of intraoperative hypotension duration on the incidence of acute kidney injury following cardiac surgery.

Methods

A retrospective analysis was conducted on 200 patients who underwent cardiac surgery. Intraoperative blood pressure data were collected, and the duration of hypotension was classified. AKI was assessed using the Kidney Disease: Improving Global Outcomes (KDIGO) criteria. Statistical analyses, including logistic regression, were performed to determine the correlation between hypotension duration and AKI incidence.

Results

The study found that longer durations of intraoperative hypotension were significantly associated with a higher incidence of AKI (p < 0.01). Specifically, patients with hypotension lasting more than 30 minutes experienced a 40% increase in AKI risk compared to those with shorter durations.

Conclusions

Intraoperative hypotension duration is a critical factor influencing the risk of acute kidney injury after cardiac surgery. Minimizing hypotension during surgery may be vital for protecting renal function and improving postoperative recovery.