Arterial Elastance: A Predictor of Hypotension Due to Anesthesia Induction

Author:

Aktas Yildirim Serap1ORCID,Sarikaya Zeynep Tugce1ORCID,Dogan Lerzan2ORCID,Ulugol Halim1,Gucyetmez Bulent1ORCID,Toraman Fevzi1

Affiliation:

1. Department of Anesthesiology and Reanimation, School of Medicine, Acibadem Mehmet Ali Aydinlar University, 34752 Istanbul, Turkey

2. Department of Anesthesiology and Reanimation, Acibadem Altunizade Hospital, 34662 Istanbul, Turkey

Abstract

Background: Hypotension is common after anesthesia induction and may have adverse outcomes. The aim of this study was to investigate whether arterial elastance (Ea) is a predictor of post-induction hypotension. Methods: Between January and June 2022, the hemodynamic parameters of 85 patients who underwent major surgery under general anesthesia were prospectively evaluated. The noncalibrated pulse contour device MostCare (Vytech, Vygon, Padua, Italy) was used to measure hemodynamic parameters before and after anesthesia induction. The duration of the measurements was determined from one minute before induction to 10 min after induction. Hypotension was defined as a greater than 30% decrease in mean arterial pressure from the pre-induction value and/or systolic arterial pressure of less than 90 mmHg. The patients were divided into post-induction hypotension (−) and (+) groups. For the likelihood of post-induction hypotension, a multivariate regression model was used by adding significantly different pre-induction parameters to the post-induction hypotension group. Results: The incidence of post-induction hypotension was 37.6%. The cut-off value of the pre-induction Ea for the prediction of post-induction hypotension was ≥1.08 mmHg m−2mL−1 (0.71 [0.59–0.82]). In the multivariate regression model, the likelihood of postinduction hypotension was 3.5-fold (1.4–9.1), increased by only an Ea ≥ 1.08 mmHg m−2mL−1. Conclusion: Pre-induction Ea showed excellent predictability of hypotension during anesthetic induction and identified patients at risk of general anesthesia induction-related hypotension.

Publisher

MDPI AG

Subject

General Medicine

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