Umbilical Artery Half-Peak Systolic Velocity Deceleration Time in Fetal Growth Restriction
Author
dc.contributor.author
Bustos Vidal, Juan Carlos
Author
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González, Vivian
Author
dc.contributor.author
Sepúlveda, Waldo
Admission date
dc.date.accessioned
2017-01-31T19:47:03Z
Available date
dc.date.available
2017-01-31T19:47:03Z
Publication date
dc.date.issued
2016
Cita de ítem
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Fetal Diagnosis and Therapy. Volumen: 40 Número: 2 Páginas: 128-134
es_ES
Identifier
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10.1159/000442049
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/142801
Abstract
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Objective: To study the umbilical artery (UA) half-peak systolic velocity deceleration time (hPSV-DT) in pregnancies complicated by fetal growth restriction (FGR). Methods: The study included 266 singleton, high-risk pregnancies with an estimated fetal weight <10th percentile, which were examined between 24 and 40 weeks' gestation and delivered within a week from the last ultrasound evaluation. UA hPSV-DT was measured with Doppler ultrasound in the same wave used to measure the pulsatility index. UA hPSV-DT values were correlated with perinatal outcome. Results: UA hPSV-DT <5th percentile was found in 87 and 98% of fetuses with moderate and severe FGR, respectively. 94% of fetuses with a UA hPSV-DT <90 ms had poor perinatal outcome including perinatal death or prolonged admission to the neonatal intensive care unit. None of the fetuses had a UA hPSV-DT <70 ms. Perinatal death occurred in 39 fetuses; UA hPSV-DT was abnormal in all of them, with 95% of these fetuses having values of 5120 ms. In the group of fetuses with absent/reverse end-diastolic velocity in the UA, the perinatal mortality rate was 51% for those with a UA hPSV-DT 590 ms and only 23% for those having a UA hPSV-DT >90 ms (p < 0.01). Conclusions: UA hPSV-DT seems to be a useful technique in the evaluation of pregnancies at risk for FGR and perinatal death. Additionally, hPSV-DT was shown to be a good predictor of perinatal death, with values of <90 ms corresponding to imminent risk of intrauterine demise and values of <70 ms being likely to be incompatible with intrauterine life. (C) 2015 S. Karger AG, Basel