Journal article
Influence of non-invasive blood pressure measurement intervals on the occurrence of intra-operative hypotension
Journal of clinical monitoring and computing, Vol.32(4), pp.699-705
08/2018
DOI: 10.1007/s10877-017-0065-4
PMCID: PMC6138874
PMID: 28965158
Abstract
The American Society of Anesthesiologists Standards for Basic Monitoring recommends blood pressure (BP) measurement every 5 min. Research has shown distractions or technical factors can cause prolonged measurement intervals exceeding 5 min. We investigated the relationship between prolonged non-invasive BP (NIBP) measurement interval and the incidence of hypotension, detected post-interval. Our secondary outcome was to determine independent predictors of these prolonged NIBP measurement intervals. Retrospective data were analyzed from 139,509 general anesthesia cases from our institution's Anesthesia Information Management System (AIMS). Absolute hypotension (AH) was defined a priori as a systolic BP < 80 mmHg and relative hypotension (RH) was defined as a 40% decrease in systolic BP from the preoperative baseline. Odds ratios (OR) with 95% confidence intervals and Pearson's Chi square Test reported the association of prolonged NIBP measurement intervals on hypotension detected post-NIBP measurement interval. Logistic regression models were developed to determine independent predictors of NIBP measurement intervals. The analysis revealed that NIBP measurement intervals greater than 6 and 10 min are associated with an approximately four times higher incidence of a patient transitioning into hypotension (AH/RH > 6 min OR 4.0 / 3.6; AH/RH > 10 min OR 4.3 / 3.9; p < 0.001). A key finding was that the "> 10-minute AH model" indicated that age 41-80, increased co-morbidity profile, obesity and turning (repositioning) of the operative room table were significant predictors of prolonged NIBP measurement intervals (p < 0.001). While we do not suggest NIBP measurement intervals cause hypotension, intervals greater than 6 and 10 min are associated with a fourfold increase in the propensity of an undetected transition into both RH or AH. These data support current monitoring guidelines.
Details
- Title: Subtitle
- Influence of non-invasive blood pressure measurement intervals on the occurrence of intra-operative hypotension
- Creators
- Grant H Kruger - Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USA. ghkruger@umich.eduAmy Shanks - Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USASachin Kheterpal - Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USATyler Tremper - Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USAChi-Jung Chiang - Luren Precision Co, Hsinchu City, TaiwanRobert E Freundlich - Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USAJames M Blum - Critical Care Anesthesiology, Emory University School of Medicine, Atlanta, GA, USAAlbert J Shih - Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USAKevin K Tremper - Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USA
- Resource Type
- Journal article
- Publication Details
- Journal of clinical monitoring and computing, Vol.32(4), pp.699-705
- DOI
- 10.1007/s10877-017-0065-4
- PMID
- 28965158
- PMCID
- PMC6138874
- NLM abbreviation
- J Clin Monit Comput
- ISSN
- 1387-1307
- eISSN
- 1573-2614
- Publisher
- Netherlands
- Grant note
- KL2 TR002245 / NCATS NIH HHS
- Language
- English
- Date published
- 08/2018
- Academic Unit
- Anesthesia
- Record Identifier
- 9984013277102771
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