Biomaterial Database

The clinical implications of absent or reversed end-diastolic frequencies in umbilical artery flow velocity waveforms. 1990

P McParland, and S Steel, and J M Pearce

Fetal Welfare Laboratory, St. George's Hospital, Tooting, London, U.K.

We describe the clinical details of 37 pregnancies with loss or reversal of end-diastolic frequencies in the umbilical artery, as detected by Doppler ultrasound. This finding is an ominous sign of serious fetal compromise in the majority of cases, with a high incidence of growth retardation, oligohydramnios, preterm delivery and maternal hypertension. However, current knowledge does not indicate when these pregnancies should be delivered. The possible pathophysiology and available literature are discussed.

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
D007234	Infant, Premature	A human infant born before 37 weeks of GESTATION.	Neonatal Prematurity,Premature Infants,Preterm Infants,Infant, Preterm,Infants, Premature,Infants, Preterm,Premature Infant,Prematurity, Neonatal,Preterm Infant
D007236	Infant, Small for Gestational Age	An infant having a birth weight lower than expected for its gestational age.
D008297	Male		Males
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
D011249	Pregnancy Complications, Cardiovascular	The co-occurrence of pregnancy and a cardiovascular disease. The disease may precede or follow FERTILIZATION and it may or may not have a deleterious effect on the pregnant woman or FETUS.	Cardiovascular Pregnancy Complications,Complications, Cardiovascular Pregnancy,Pregnancy, Cardiovascular Complications,Cardiovascular Pregnancy Complication,Complication, Cardiovascular Pregnancy,Pregnancies, Cardiovascular Complications,Pregnancy Complication, Cardiovascular
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
D003971	Diastole	Post-systolic relaxation of the HEART, especially the HEART VENTRICLES.	Diastoles
D005260	Female		Females
D005313	Fetal Death	Death of the developing young in utero. BIRTH of a dead FETUS is STILLBIRTH.	Fetal Mummification,Fetal Demise,Death, Fetal,Deaths, Fetal,Demise, Fetal,Fetal Deaths,Mummification, Fetal