Skip to main content
Journal cover image

Effect of magnesium on fetal heart rate variability using computer analysis.

Publication ,  Journal Article
Hiett, AK; Devoe, LD; Brown, HL; Watson, J
Published in: Am J Perinatol
July 1995

We studied 16 women, at 32 weeks' or more gestation who required magnesium sulfate (MgSO4) therapy for preterm labor or preeclampsia. A 60-minute Doppler fetal heart rate (FHR) tracing, analyzed by the Oxford Sonicaid System 8000, was obtained for 1 hour before and 2 hours after each patient received intravenous MgSO4 therapy. Maternal serum Mg2+ levels were obtained at the second monitoring session. Matched paired measures of FHR parameters were compared with the Student's t test. After MgSO4 administration, we noted significant falls in long-term variability, short-term variability, and total acceleration (more than 10 beats/min) counts. Reduced short-term and overall variability occurred in all cases with maternal serum Mg2+ levels more than 4.6 mg/dL. Therapeutic maternal serum Mg2+ levels are linked with decreases in long-term and short-term FHR variability and acceleration counts. These findings should be considered when evaluating resting FHR baseline of patients thus treated.

Duke Scholars

Published In

Am J Perinatol

DOI

ISSN

0735-1631

Publication Date

July 1995

Volume

12

Issue

4

Start / End Page

259 / 261

Location

United States

Related Subject Headings

  • Ultrasonography, Prenatal
  • Pregnancy
  • Pre-Eclampsia
  • Obstetrics & Reproductive Medicine
  • Obstetric Labor, Premature
  • Magnesium Sulfate
  • Magnesium
  • Injections, Intravenous
  • Humans
  • Heart Rate, Fetal
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Hiett, A. K., Devoe, L. D., Brown, H. L., & Watson, J. (1995). Effect of magnesium on fetal heart rate variability using computer analysis. Am J Perinatol, 12(4), 259–261. https://doi.org/10.1055/s-2007-994468
Hiett, A. K., L. D. Devoe, H. L. Brown, and J. Watson. “Effect of magnesium on fetal heart rate variability using computer analysis.Am J Perinatol 12, no. 4 (July 1995): 259–61. https://doi.org/10.1055/s-2007-994468.
Hiett AK, Devoe LD, Brown HL, Watson J. Effect of magnesium on fetal heart rate variability using computer analysis. Am J Perinatol. 1995 Jul;12(4):259–61.
Hiett, A. K., et al. “Effect of magnesium on fetal heart rate variability using computer analysis.Am J Perinatol, vol. 12, no. 4, July 1995, pp. 259–61. Pubmed, doi:10.1055/s-2007-994468.
Hiett AK, Devoe LD, Brown HL, Watson J. Effect of magnesium on fetal heart rate variability using computer analysis. Am J Perinatol. 1995 Jul;12(4):259–261.
Journal cover image

Published In

Am J Perinatol

DOI

ISSN

0735-1631

Publication Date

July 1995

Volume

12

Issue

4

Start / End Page

259 / 261

Location

United States

Related Subject Headings

  • Ultrasonography, Prenatal
  • Pregnancy
  • Pre-Eclampsia
  • Obstetrics & Reproductive Medicine
  • Obstetric Labor, Premature
  • Magnesium Sulfate
  • Magnesium
  • Injections, Intravenous
  • Humans
  • Heart Rate, Fetal