Abstract
BACKGROUND: Alterations in fetal heart rate variability and baseline may be seen with maternal administration of magnesium sulfate. In this case, a dose-related decrease in the baseline fetal heart rate was observed in association with magnesium sulfate administration. CASE: A primiparous woman was given parenteral magnesium sulfate for preterm labor. After tocolytic administration, the fetal heart rate baseline decreased to 110 beats per minute (bpm) from its initial rate of 140 bpm, although good variability was maintained. Increasing the dosage was accompanied by a further drop in the baseline heart rate, to 100 bpm. Fetal echocardiography was normal except for sinus bradycardia. Stopping magnesium sulfate administration was accompanied by a return to the pretherapy baseline heart rate. The pregnancy progressed without any further complications, and a healthy infant was delivered three weeks later. CONCLUSION: Maternal administration of magnesium sulfate may be associated with a profound decrease in the baseline fetal heart rate, resulting in fetal sinus bradycardia.
| Original language | English |
|---|---|
| Pages (from-to) | 206-210 |
| Number of pages | 5 |
| Journal | Journal of Reproductive Medicine for the Obstetrician and Gynecologist |
| Volume | 43 |
| Issue number | 3 SUPPL. |
| State | Published - Apr 27 1998 |
| Externally published | Yes |
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Keywords
- Bradycardia
- Fetus
- Labor
- Magnesium sulfate
- Premature
ASJC Scopus subject areas
- Obstetrics and Gynecology
- Reproductive Medicine
Cite this
Fetal bradycardia secondary to magnesium sulfate therapy for preterm labor : A case report. / Hamersley, S. L.; Landy, H. J.; O'Sullivan, M. J.
In: Journal of Reproductive Medicine for the Obstetrician and Gynecologist, Vol. 43, No. 3 SUPPL., 27.04.1998, p. 206-210.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fetal bradycardia secondary to magnesium sulfate therapy for preterm labor
T2 - A case report
AU - Hamersley, S. L.
AU - Landy, H. J.
AU - O'Sullivan, M. J.
PY - 1998/4/27
Y1 - 1998/4/27
N2 - BACKGROUND: Alterations in fetal heart rate variability and baseline may be seen with maternal administration of magnesium sulfate. In this case, a dose-related decrease in the baseline fetal heart rate was observed in association with magnesium sulfate administration. CASE: A primiparous woman was given parenteral magnesium sulfate for preterm labor. After tocolytic administration, the fetal heart rate baseline decreased to 110 beats per minute (bpm) from its initial rate of 140 bpm, although good variability was maintained. Increasing the dosage was accompanied by a further drop in the baseline heart rate, to 100 bpm. Fetal echocardiography was normal except for sinus bradycardia. Stopping magnesium sulfate administration was accompanied by a return to the pretherapy baseline heart rate. The pregnancy progressed without any further complications, and a healthy infant was delivered three weeks later. CONCLUSION: Maternal administration of magnesium sulfate may be associated with a profound decrease in the baseline fetal heart rate, resulting in fetal sinus bradycardia.
AB - BACKGROUND: Alterations in fetal heart rate variability and baseline may be seen with maternal administration of magnesium sulfate. In this case, a dose-related decrease in the baseline fetal heart rate was observed in association with magnesium sulfate administration. CASE: A primiparous woman was given parenteral magnesium sulfate for preterm labor. After tocolytic administration, the fetal heart rate baseline decreased to 110 beats per minute (bpm) from its initial rate of 140 bpm, although good variability was maintained. Increasing the dosage was accompanied by a further drop in the baseline heart rate, to 100 bpm. Fetal echocardiography was normal except for sinus bradycardia. Stopping magnesium sulfate administration was accompanied by a return to the pretherapy baseline heart rate. The pregnancy progressed without any further complications, and a healthy infant was delivered three weeks later. CONCLUSION: Maternal administration of magnesium sulfate may be associated with a profound decrease in the baseline fetal heart rate, resulting in fetal sinus bradycardia.
KW - Bradycardia
KW - Fetus
KW - Labor
KW - Magnesium sulfate
KW - Premature
UR - http://www.scopus.com/inward/record.url?scp=0031893986&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031893986&partnerID=8YFLogxK
M3 - Article
C2 - 9564647
AN - SCOPUS:0031893986
VL - 43
SP - 206
EP - 210
JO - The Journal of reproductive medicine
JF - The Journal of reproductive medicine
SN - 0024-7758
IS - 3 SUPPL.
ER -