Why the study?
Whether common intraoperative hypotension thresholds (SBP <80 mmHg, MAP <60 mmHg, and ΔSBP >20%) validly signal an increased risk of 30-day post-operative mortality is unclear.
Are common thresholds of intraoperative hypotension (SBP <80 mmHg, MAP <60 mmHg, ΔSBP >20%) associated with increased 30-day mortality following surgery?
Population
11 304 surgical patients
Comparison
Common intraoperative hypotension thresholds (SBP <80 mmHg, MAP <60 mmHg, and ΔSBP >20%)
Design
Retrospective registry-based cohort study
Follow-up
30 days
Authors
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SBP <80 mmHg and MAP <60 mmHg were associated with 30-day mortality; leaves open whether targeting these thresholds improves outcomes.
Are common thresholds of intraoperative hypotension (SBP <80 mmHg, MAP <60 mmHg, ΔSBP >20%) associated with increased 30-day mortality following surgery?
Commonly accepted thresholds of intraoperative hypotension (SBP < 80 mmHg and MAP < 60 mmHg) are valid alarming limits independently associated with increased 30-day post-operative mortality.
Dony et al. (2020) studied this question.
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