New Doppler Technique for Assessing Uteroplacental Blood Flow

Campbell, Stuart; Griffin, David Ray; Pearce, J. M.; Diaz-Recasens, Joacquim; Cohen–Overbeek, Titia E.; Willson, Keith; Teague, M. J.

doi:10.1097/00006254-198309000-00004

Cited by 52 publications

(61 citation statements)

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“…Doppler studies of the maternal side of the placental circulation may yield further information. Studies of branches of the uterine artery (arcuate arteries, Campbell et al 1983) have been advocated as a screening test in the early second trimester for the identification of high-risk pregnancies (Campbell et al 1986), and abnormal signals are associated with an increased rate of pregnancy-induced hypertension, poor fetal growth and fetal hypoxia Fleischer et al 1986).…”

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confidence: 99%

A comparison of fetal abdominal circumference measurements and Doppler ultrasound in the prediction of small‐for‐dates babies and fetal compromise

Chambers

Hosktns

Haddad

et al. 1989

BJOG

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Summary. A total of 145 pregnancies clinically suspected of being small‐for‐dates was studied at presentation with a single measurement of the fetal abdominal circumference and Doppler studies of the umbilical and arcuate arteries. The abdominal circumference measurement gave the best prediction of the small‐for‐gestational‐age (SGA) baby (sensitivity 73%, umbilical artery sensitivity 47%, arcuate artery sensitivity 29%). The umbilical artery measurement gave the best prediction of antenatal fetal compromise; the performance of the tests was compared for a fixed sensitivity of 100% (i. e. all cases of antenatal compromise would be detected), the specificity of the umbilical artery measurement was 77%, abdominal circumference measurement 12% and arcuate artery measurement 2%. In our data, umbilical artery studies were not a sensitive predictor of the SGA baby but they did give an accurate prediction of the potentially compromised SGA fetus.

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mentioning

confidence: 99%

A comparison of fetal abdominal circumference measurements and Doppler ultrasound in the prediction of small‐for‐dates babies and fetal compromise

Chambers

Hosktns

Haddad

et al. 1989

BJOG

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“…Arterial flow velocity waveforms may also be recorded in the fetal umbilical placental circulation (McCallum etaf. 1978;Fitzgerald & Drumm 1977;Trudinger & Cook 1982;Giles et al 1982;Trudinger et al 1985~) placental circulation (Campbell et al 1983;Trudinger et al 198%). Flow velocity waveforms may be recorded with a simple continuous wave Doppler ultrasound system and such studies are well suited to routine clinical practice.…”

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confidence: 99%

A comparison of fetal heart rate monitoring and umbilical artery waveforms in the recognition of fetal compromise

Trudinger

Cook

Jones

et al. 1986

BJOG

110

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Summary. Antenatal fetal heart rate monitoring was compared with the study of umbilical artery flow velocity waveforms for the recognition of fetal compromise in 170 patients considered at high fetal risk. In 53 patients the infant had a 5‐min Apgar score of <7 and/or a birthweight < the 10th centile of weight for gestation. Fetal heart rate traces were classified as reactive or non‐reactive and also assessed with a modified Fischer score. The systolic/diastolic A/B ratio was measured in the umbilical artery waveform. Fetal compromise was more efficiently recognized by study of the umbilical artery waveforms. The sensitivity of assessment by umbilical artery waveforms was 60% compared with 17% and 36% respectively, for the two methods of scoring fetal heart rate traces. This was not associated with an increase in false‐positive results as the predictive value of both positive (64% compared with 69 and 58%) and negative (83% compared with 72 and 75%) results was similar when umbilical artery waveform analysis was compared with the two methods of scoring fetal heart rate traces. Specificity was also similar (85% compared with 97 and 88%).

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“…Another remarkable effect con cerns the shape of the uterine contraction. The oxytocininduced contraction is almost completely symmetrical, whereas the spontaneous contraction is asymmetrical and skewed to the relaxation phase of the contraction [7], Var ious studies of uterine blood flow have shown that it decreases during contractions [8][9][10]. Brotanek et al [11] studied closely the time relationship between changes in uterine blood flow and the uterine contraction cycle.…”

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confidence: 99%