Measurement of Systolic-Diastolic Ratio in the Umbilical Artery by Continuous-Wave and Pulsed-Wave Doppler Ultrasound: Comparison at Different Sites

Analysis of umbilical artery flow velocity waveforms, especially systolic-diastolic (S-D) ratio, can predict some pregnancy abnormalities. Most of the earlier studies did not specify the exact segment of umbilical artery sampled. We studied 53 normal singleton pregnancies between 18-41 weeksʼ gestat...

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Veröffentlicht in:	Obstetrics and gynecology (New York. 1953) 1991-02, Vol.77 (2), p.209-212
Hauptverfasser:	FOROUZAN, IRAJ, COHEN, ARNOLD W., ARGER, PETER
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Blood Flow Velocity Diastole Female Gynecology. Andrology. Obstetrics Humans Management. Prenatal diagnosis Medical sciences Pregnancy Pregnancy Trimester, Second Pregnancy Trimester, Third Pregnancy. Fetus. Placenta Systole Ultrasonography, Prenatal - methods Umbilical Arteries - diagnostic imaging
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Zusammenfassung:	Analysis of umbilical artery flow velocity waveforms, especially systolic-diastolic (S-D) ratio, can predict some pregnancy abnormalities. Most of the earlier studies did not specify the exact segment of umbilical artery sampled. We studied 53 normal singleton pregnancies between 18-41 weeksʼ gestation to compare S-D ratio measurements of the umbilical artery at different sites1) abdominal insertion site, 2) placental insertion site, 3) mid-cord, and 4) an undetermined site. The mean S-D ratio was significantly different (P
ISSN:	0029-7844 1873-233X
DOI:	10.1097/00006250-199102000-00009