Why the study?
Does intraoperative hypotension defined by relative thresholds compared to absolute thresholds better predict acute kidney and myocardial injury in patients undergoing noncardiac surgery?
Does intraoperative hypotension defined by relative thresholds compared to absolute thresholds better predict acute kidney and myocardial injury in patients undergoing noncardiac surgery?
Anesthetic management of intraoperative blood pressure can be based on absolute intraoperative pressures without regard to preoperative baseline pressure.
Absolute thresholds predict injury comparably to relative ones; supports simplified BP targets but leaves open prospective confirmation.
The associations based on relative thresholds were no stronger than those based on absolute thresholds. Furthermore, there was no clinically important interaction with preoperative pressure. Anesthetic management can thus be based on intraoperative pressures without regard to preoperative pressure.
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Salmasi et al. (2016) studied this question.
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