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Int J Obstet Anesth · Aug 2022
Obstetric comorbidity index and the odds of general vs. neuraxial anesthesia in women undergoing cesarean delivery: a retrospective cohort study.
- S Singh, M K Farber, B T Bateman, M I Lumbreras-Marquez, C J Richey, S R Easter, K G Fields, and L C Tsen.
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, USA.
- Int J Obstet Anesth. 2022 Aug 1; 51: 103546103546.
BackgroundMaternal and fetal concerns have prompted a significant reduction in general anesthesia (GA) use for cesarean delivery (CD). The obstetric comorbidity index (OB-CMI) is a validated, dynamic composite score of comorbidities encountered in an obstetric patient. We sought to estimate the association between OB-CMI and odds of GA vs. neuraxial anesthesia (NA) use for CD.MethodsIn this single-center, retrospective cohort study conducted at a large academic hospital in the United States of America, OB-CMI was calculated on admission and every 12 h for women undergoing CD at ≥23 weeks' gestation (n=928). The CD urgency, anesthesia type, and most recent OB-CMI were extracted from the medical record. The association between OB-CMI and GA use was estimated by logistic regression, with and without adjustment for CD urgency, parity and race.ResultsEach one-point increase in OB-CMI was associated with a 32% (95% confidence interval [CI] 17% to 48%) increase in the odds of GA use (Model 1, area under the receiver operating characteristic curve [AUC] 0.708, 95% CI 0.610 to 0.805). The AUC improved to 0.876 (95% CI 0.815 to 0.937) with the addition of emergent CD (Model 2, P <0.001 vs. Model 1), but not parity and race (Model 3, AUC 0.880, 95% CI 0.824 to 0.935; P=0.616 vs. Model 2).ConclusionsThe OB-CMI is associated with increased odds of GA vs. NA use for CD, particularly when emergent. Collected in real time, the OB-CMI may enable prophylaxis (e.g. comorbidity modification, earlier epidural catheter placement, elective CD) or preparation for GA use.Copyright © 2022 Elsevier Ltd. All rights reserved.
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