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Heart rate variability changes during pregnancy: an observational study
Journal article   Peer reviewed

Heart rate variability changes during pregnancy: an observational study

D. Chamchad, J.C. Horrow, L. Nakhamchik and V.A. Arkoosh
International journal of obstetric anesthesia, v 16(2), pp 106-109
2007
PMID: 17270423

Abstract

Blood pressure Healthy volunteers Heart rate: variability Pregnancy
Autonomic nervous systemic imbalance, as reflected by altered heart rate variability, is associated with adverse clinical sequelae. Before heart rate variability can predict adverse responses to interventions at delivery, changes compared to the non-pregnant state should be explored. Twenty-four normal healthy volunteer women and 22 pregnant women at term immediately before cesarean section, underwent various analyses of heart rate variability following a standard sampling. Calculations included time domain, frequency domain and non-linear measures. To make 14 comparisons between pregnant and volunteer subjects, a significance level of 0.00357 was taken. Compared to volunteers, pregnant patients had higher heart rates and blood pressures, and decreases in some time domain heart rate variability parameters. Frequency domain heart rate variability parameters remained unaffected by pregnancy. Non-linear analysis results all decreased numerically, but failed to achieve statistical significance. Future investigations seeking associations of heart rate variability parameters with clinical events in pregnant women at term should consider time domain and non-linear analyses.

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26 citations in Scopus

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Collaboration types
Domestic collaboration
Web of Science research areas
Anesthesiology
Obstetrics & Gynecology
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