Perioperative medicine & outcomes
Do higher alarm thresholds for arterial blood pressure lead to less perioperative hypotension? A retrospective, observational cohort study
Authors' conclusion
In conclusion, higher alarm thresholds do not generally lead to less hypotensive episodes perioperatively.
Study context
- Population
- Patients undergoing noncardiac surgery under anaesthesia in a large surgical centre with 32 operating theatres406,623 BP values
- Participants
- 4,222 patients
- Exposure
- Higher mean arterial pressure (MAP) hypotension alarm thresholds vs 60 mmHg
- Group 1n = 1,982reference
- Group 2n = 2,240
- Outcome
- (A) Proportion of BP measurements below threshold (hypotension MAP < 65 mmHg); (B) at least one BP measurement below threshold
Methodological detailsobservational, before-after
- Observational
- Before-after
Main finding
As reported in the abstract
Proportion of MAP values below 65 mmHg
Observational data: associations, not effects.
Further findings
| Outcome | OR | P value |
|---|---|---|
| Ever experiencing a hypotensive episode during anaesthesiaLogistic regression | 0.84 | P = 0.029 |
Original publication
Do higher alarm thresholds for arterial blood pressure lead to less perioperative hypotension? A retrospective, observational cohort study. J Clin Monit Comput. Published 7 July 2022. doi:10.
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