Document Detail

Maternal hemodynamics during cesarean delivery assessed by whole-body impedance cardiography.
MedLine Citation:
PMID:  15762965     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: This descriptive study was designed to evaluate maternal hemodynamics and cardiovascular responses to delivery during cesarean section (CS) under spinal anesthesia. We also assessed the feasibility of a noninvasive and continuous method of measuring cardiac output, namely whole-body impedance cardiography (ICG(WB)), during elective CS. Because of the techniques used in previous studies, only fractionated data on maternal hemodynamics during CS are available to date. METHODS: We studied 10 healthy women with normal pregnancies and two pregnant women with heart disease undergoing elective CS. Mean arterial pressure (MAP), heart rate (HR), stroke index (SI), cardiac index (CI) and systemic vascular resistance index (SVRI) were recorded continuously during CS, during the period of dissipation of anesthesia and on the second to fifth postpartum day. Analysis of variance for repeated measurements (anova) and the paired sample t-test were used in statistical analysis. RESULTS: The hemodynamic parameters could be registered continuously during the whole procedure. At the point of delivery, a 47% increase in CI and a 39% decrease in SVRI were recorded, while MAP remained stable. These changes occurred within 2 min of delivery of the newborn and persisted on average for 10 min. CONCLUSION: Sudden and significant hemodynamic changes take place at the moment of delivery. Intact physiological cardiovascular compensation mechanisms are needed to adapt to these challenges. Whole-body impedance cardiography may offer a useful noninvasive tool to monitor hemodynamics during cesarean section.
Kati Tihtonen; Tiit Kööbi; Arvi Yli-Hankala; Jukka Uotila
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta obstetricia et gynecologica Scandinavica     Volume:  84     ISSN:  0001-6349     ISO Abbreviation:  Acta Obstet Gynecol Scand     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-03-14     Completed Date:  2005-05-19     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0370343     Medline TA:  Acta Obstet Gynecol Scand     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  355-61     Citation Subset:  IM    
Department of Obstetrics and Gynecology, Tampere University Hospital, Tampere, Finland.
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MeSH Terms
Anesthesia, Obstetrical
Anesthesia, Spinal
Aortic Valve Stenosis / physiopathology*
Cardiography, Impedance / methods*
Cesarean Section*
Feasibility Studies
Hemodynamics / physiology*
Pregnancy Complications, Cardiovascular / physiopathology*
Tetralogy of Fallot / physiopathology*
Comment In:
Acta Obstet Gynecol Scand. 2006;85(1):126; author reply 126   [PMID:  16521695 ]

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