Biomaterial Database

Prognostic factors for survival of growth-restricted fetuses with absent end-diastolic velocity in the umbilical artery. 2002

Riza Madazli

Department of Obstetrics and Gynaecology, Cerrahpasa Medical Faculty, University of Istanbul, Istanbul, Turkey.

OBJECTIVE The aim of the study was to evaluate the prognostic factors for survival of growth-restricted fetuses with absent end-diastolic velocity in the umbilical artery. METHODS Forty-five intrauterine growth-restricted fetuses with either absent end-diastolic (34 fetuses) or reverse flow (11 fetuses) in the umbilical artery were studied. The clinical characteristics of these pregnancies were determined. Logistic regression analysis was conducted to find the relative value of gestational age at birth, thoracic artery and middle cerebral artery Doppler velocimetry, and short-term variability determined by cardiotochography in the prediction of perinatal mortality. RESULTS The mean gestational age at birth and birth weight were 30.8+/-2.4 weeks and 972+/-337 g, respectively. The perinatal mortality was 40%. Gestational age at birth was found to have the only significant contribution to the prediction of perinatal deaths. Fetuses with a gestational age at delivery less than 29 weeks died and more than 31 weeks survived. Thoracic artery pulsatility index had the best screening efficiency for predicting perinatal mortality between 29 and 31 weeks gestational age. CONCLUSIONS Absent end-diastolic velocity in the umbilical artery is mainly a problem of severe preterm growth-restricted fetuses and is associated with high perinatal mortality. The major and dominant influence on survival is gestational age at birth.

UI	MeSH Term	Description	Entries
D007231	Infant, Newborn	An infant during the first 28 days after birth.	Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D011379	Prognosis	A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations.	Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D001783	Blood Flow Velocity	A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.	Blood Flow Velocities,Flow Velocities, Blood,Flow Velocity, Blood,Velocities, Blood Flow,Velocity, Blood Flow
D005260	Female		Females
D005317	Fetal Growth Retardation	Failure of a FETUS to attain expected GROWTH.	Growth Retardation, Intrauterine,Intrauterine Growth Retardation,Fetal Growth Restriction,Intrauterine Growth Restriction
D005865	Gestational Age	The age of the conceptus, beginning from the time of FERTILIZATION. In clinical obstetrics, the gestational age is often estimated from the onset of the last MENSTRUATION which is about 2 weeks before OVULATION and fertilization. It is also estimated to begin from fertilization, estrus, coitus, or artificial insemination.	Embryologic Age,Fetal Maturity, Chronologic,Chronologic Fetal Maturity,Fetal Age,Maturity, Chronologic Fetal,Age, Embryologic,Age, Fetal,Age, Gestational,Ages, Embryologic,Ages, Fetal,Ages, Gestational,Embryologic Ages,Fetal Ages,Gestational Ages
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012372	ROC Curve	A graphic means for assessing the ability of a screening test to discriminate between healthy and diseased persons; may also be used in other studies, e.g., distinguishing stimuli responses as to a faint stimuli or nonstimuli.	ROC Analysis,Receiver Operating Characteristic,Analysis, ROC,Analyses, ROC,Characteristic, Receiver Operating,Characteristics, Receiver Operating,Curve, ROC,Curves, ROC,ROC Analyses,ROC Curves,Receiver Operating Characteristics
D014469	Umbilical Arteries	Specialized arterial vessels in the umbilical cord. They carry waste and deoxygenated blood from the FETUS to the mother via the PLACENTA. In humans, there are usually two umbilical arteries but sometimes one.	Arteries, Umbilical,Artery, Umbilical,Umbilical Artery