Influence of carbon monoxide poisoning on the fetal heart monitor tracing

A report of 3 cases

Craig Towers, Vincent A. Corcoran

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

BACKGROUND: The diagnosis of carbon monoxide poisoning in the third trimester of pregnancy requires an index of suspicion, and the appearance of the fetal heart monitor tracing may help in this regard. CASES: Three cases of third-trimester acute carbon mo-noxide poisoning occurred.In each pregnancy, the fetal heart monitor tracing on ad-mission was correlated with the maternal carboxyhemo-globin level, and how the pat-tern changed following the institution of therapy was analyzed. CONCLUSION: In all 3 cases, the initial fetal heart rate pattern demonstrated decreased variability with an elevated baseline and an absence of accelerations and decelerations. Within 45-90 minutes of treatment onset, the baseline fetal heart rate dropped by 20-40 beats per minute, the variability became moderate, and accelerations occurred. Absent accelerations with minimal variability, if caused by uteroplacental insufficiency, are usually preceded by recurrent decelerations. Absent accelerations with minimal variability in the absence of recurrent decelerations may suggest another cause, of which carbon monoxide intoxication can be added to the differential, especially since this disorder often has nonspecific clinical symptoms.

Original languageEnglish (US)
Pages (from-to)184-188
Number of pages5
JournalJournal of Reproductive Medicine for the Obstetrician and Gynecologist
Volume54
Issue number3
StatePublished - Mar 1 2009

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Carbon Monoxide Poisoning
Fetal Heart
Deceleration
Fetal Heart Rate
Third Pregnancy Trimester
Charadriiformes
Globins
Carbon Monoxide
Poisoning
Carbon
Mothers
Pregnancy

All Science Journal Classification (ASJC) codes

  • Reproductive Medicine
  • Obstetrics and Gynecology

Cite this

Influence of carbon monoxide poisoning on the fetal heart monitor tracing : A report of 3 cases. / Towers, Craig; Corcoran, Vincent A.

In: Journal of Reproductive Medicine for the Obstetrician and Gynecologist, Vol. 54, No. 3, 01.03.2009, p. 184-188.

Research output: Contribution to journalArticle

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