Abstract
Hypotension is a common cause of acute kidney injury (AKI), with strong associations between the duration and magnitude of hypotension seen across a range of situations including major surgery. However, it is less clear whether targeting higher intraoperative MAP results in lower rates of AKI. In a prespecified analysis of the Perioperative Ischemic Evaluation-3 (POISE-3) randomized controlled trial, this question is addressed for noncardiac major surgery. Despite an increase in cessation of antihypertensive medications and higher intraoperative mean arterial blood pressure in the intervention arm, no differences were seen in the rates of postoperative AKI. This commentary discusses the strengths and weaknesses of the trial, as well as providing some interpretation of results and their relevance to clinical practice.
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