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Updated: Jun 18, 2026

Evaluation of Fluid Overload by Bioelectrical Impedance Vectorial Analysis
Published on: August 17, 2022
Comparing elective and emergency caesarean section by using bioimpedance method
Zuhal Çavuş1, Ayşe Vahapoğlu2, Ülkü Aygen Türkmen2
1Anesthesiology and Reanimation Department, University of Health Sciences, Gaziosmanpaşa Training and Research Hospital, Istanbul, Turkey. zuhalcavus74@gmail.com.
This study compared hemodynamic changes during elective and emergent Cesarean sections (C/S) using non-invasive monitoring. Elective C/S showed increased stroke volume and cardiac reserve, while emergent C/S had transient stroke index increases.
Area of Science:
- Obstetrics and Gynecology
- Cardiovascular Physiology
- Medical Technology
Background:
- Limited research exists on hemodynamic variations between elective and emergent Cesarean sections (C/S).
- Understanding these physiological changes with novel non-invasive methods can aid maternal and fetal management.
Purpose of the Study:
- To prospectively observe and compare non-invasive hemodynamic changes in patients undergoing elective versus emergent C/S.
- To evaluate the utility of whole-body impedance method for monitoring cardiovascular parameters during C/S.
Main Methods:
- A prospective observational study involving 95 patients undergoing C/S.
- Non-invasive hemodynamic parameters including cardiac output (CO), cardiac index (CI), stroke volume (SV), stroke index (SI), total peripheral resistance (TPR), and cardiac reserve (GGI) were measured using NICaS™.
- Measurements were taken at baseline and at nine 5-minute intervals during surgery.
Main Results:
- Stroke volume (SV) and stroke index (SI) showed statistically significant increases at specific intervals in the elective C/S group.
- The emergent C/S group exhibited a statistically significant increase in stroke index (SI) at one interval.
- Cardiac index (CI) decreased in the elective group at one interval, while total peripheral resistance (TPR) increased. Cardiac reserve (GGI) increased in the elective group at one interval.
Conclusions:
- Non-invasive hemodynamic monitoring is feasible for assessing cardiac performance before, during, and after C/S.
- The NICaS™ device may serve as a reliable tool for establishing baseline values and early detection of complications during C/S.
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