Electrical velocimetry demonstrates the increase in cardiac output and decrease in systemic vascular resistance accompanying cesarean delivery and oxytocin administration

For cardiac index (CI), HR, and stroke index (SI), the peak measurements during the AFTER period were also compared with the average values during the BEFORE period. Because no "gold standard" was used in this study and no validation studies have been performed with EV in obstetric patient...

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Bibliographic Details
Published in:Journal of clinical anesthesia 2012-02, Vol.24 (1), p.79-82
Main Authors: Archer, Thomas L., MD, MBA, Conrad, Benjamin E., MD, Suresh, Preetham, MD, Tarsa, Maryam, MD
Format: Article
Language:English
Subjects:
Anesthesia
Anesthesia & Perioperative Care
Blood pressure
Cardiac arrhythmia
Cardiac Output
Cardiography, Impedance - methods
Cesarean Section - methods
Female
Heart rate
Humans
Oxytocics - pharmacology
Oxytocin - pharmacology
Pain Medicine
Pregnancy
Stroke
Vascular Resistance
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Summary:For cardiac index (CI), HR, and stroke index (SI), the peak measurements during the AFTER period were also compared with the average values during the BEFORE period. Because no "gold standard" was used in this study and no validation studies have been performed with EV in obstetric patients, we present our data as "nominal cardiac index" (nCI), "nominal stroke index" (nSI), and "nominal systemic vascular resistance index" (nSVRI). [...]in the management of a preeclamptic patient, it may be useful to know that the CO is decreasing and the SVR is increasing, even though the exact magnitude of those changes is uncertain. 3) Electrical velocimetry is explicit in its derivation of SV from two accepted physiological parameters, left ventricular ejection time (LVET) and maximum rate of decrease of thoracic impedance during systole ("index of contractility", or "ICON").
ISSN:0952-8180
1873-4529
DOI:10.1016/j.jclinane.2011.02.014