The effects of epidural anesthesia on the doppler velocimetry of umbilical and uterine arteries in normal term labor

Amy B. Hughes, Lawrence D. Devoe, Marsha L. Wakefield, William P. Metheny

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

To study the possible effects of epidural anesthesia on the Doppler velocimetry of the fetal umbilical and maternal uterine arteries, 15 normal term parturients were examined during active labor. Each Doppler study, conducted over 90 minutes after a 500-mL intravenous volume pre-load, was divided into three phases: 30 minutes of pre-anesthetic control, 30 minutes during epidural catheter placement and dosing, and 30 minutes after establishing effective regional blockade. During each phase, maternal blood pressure and pulse were monitored every 5 minutes, and continuouswave Doppler recordings of the umbilical and uterine arteries were made at three separate intervals. Epidural placement and dosage techniques were similar for all patients; 0.25% bupivacaine solution was used and sensory levels of T6obtained. The mean maternal systolic and diastolic blood pressures and pulse rate declined significantly, but no woman experienced hypotension. Mean systolic/diastolic ratios and pulsatility indices of the umbilical and uterine arteries did not change significantly during the study. We conclude that effective epidural anesthesia does not have a significant impact on Doppler flow characteristics of either the maternal or fetal umbilical vasculature, despite lowered maternal blood pressure and pulse rate.

Original languageEnglish (US)
Pages (from-to)809-812
Number of pages4
JournalObstetrics and Gynecology
Volume75
Issue number5
StatePublished - May 1990

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Uterine Artery
Umbilical Arteries
Rheology
Epidural Anesthesia
Mothers
Blood Pressure
Umbilicus
Heart Rate
Bupivacaine
Hypotension
Pulse
Anesthetics
Catheters
Parturition

ASJC Scopus subject areas

  • Obstetrics and Gynecology

Cite this

The effects of epidural anesthesia on the doppler velocimetry of umbilical and uterine arteries in normal term labor. / Hughes, Amy B.; Devoe, Lawrence D.; Wakefield, Marsha L.; Metheny, William P.

In: Obstetrics and Gynecology, Vol. 75, No. 5, 05.1990, p. 809-812.

Research output: Contribution to journalArticle

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