Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Nov 2020
ReviewCommon clinical thresholds of intraoperative hypotension and 30-day mortality following surgery: a retrospective cohort study.
A wide range of thresholds define intraoperative hypotension and can be used to guide intraoperative blood pressure management. Many clinicians use the systolic blood pressure (SBP) <80 mmHg, the mean arterial pressure (MAP) <60 mmHg and the SBP percent drop from baseline (ΔSBP) >20% as alarming limits that should not be exceeded. Whether these common thresholds are valid limits that can inform clinicians on a possible increased risk of post-operative complications, particularly 30-day mortality, is currently unclear. ⋯ Commonly accepted thresholds of intraoperative hypotension, such as an SBP of 80 mmHg and an MAP of 60 mmHg, are valid alarming limits that are significantly and independently associated with 30-day mortality.