Umbilical artery flow velocity waveforms in monoamniotic twins with cord entanglement

Alfred Z. Abuhamad, Giancarlo Mari, Joshua A. Copel, Catherine J. Cantwell, Arthur T. Evans

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Background: Monoamniotic twins with ultrasonographic evidence of umbilical cord entanglement present a management challenge in the antepartum period. Cases: We report two pregnancies with monoamniotic twins and ultrasonographic evidence of cord entanglement in which longitudinal Doppler flow velocity waveforms of the umbilical and middle cerebral arteries were obtained. A notch in the umbilical artery velocity waveform was noted in one twin member at 33 weeks' gestation and in both twin members of the other pregnancy at 31 weeks' gestation. Worsening of the umbilical artery velocity waveform notch with advancing gestation was noted in one fetus. Conclusion: The presence of a notch in the umbilical artery velocity waveform may reflect hemodynamic alterations in the fetal-placental circulation secondary to narrowing of the umbilical vessels involved in cord entanglement. This Doppler finding may be useful in the antepartum management of these pregnancies.

Original languageEnglish (US)
Pages (from-to)674-677
Number of pages4
JournalObstetrics and Gynecology
Volume86
Issue number4 PART 2
DOIs
StatePublished - Jan 1 1995
Externally publishedYes

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Umbilical Arteries
Pregnancy
Umbilicus
Placental Circulation
Umbilical Cord
Middle Cerebral Artery
Fetus
Hemodynamics

All Science Journal Classification (ASJC) codes

  • Obstetrics and Gynecology

Cite this

Umbilical artery flow velocity waveforms in monoamniotic twins with cord entanglement. / Abuhamad, Alfred Z.; Mari, Giancarlo; Copel, Joshua A.; Cantwell, Catherine J.; Evans, Arthur T.

In: Obstetrics and Gynecology, Vol. 86, No. 4 PART 2, 01.01.1995, p. 674-677.

Research output: Contribution to journalArticle

Abuhamad, Alfred Z. ; Mari, Giancarlo ; Copel, Joshua A. ; Cantwell, Catherine J. ; Evans, Arthur T. / Umbilical artery flow velocity waveforms in monoamniotic twins with cord entanglement. In: Obstetrics and Gynecology. 1995 ; Vol. 86, No. 4 PART 2. pp. 674-677.
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