Biomaterial Database

[Predictive value of Doppler ultrasound findings in twin pregnancies]. 1995

R Faber, and B Viehweg, and U Burkhardt

Universitäts-Frauenklinik Leipzig.

In a prospective study we investigated 100 twin pregnancies in order to assess the predictive value of doppler-sonographic measurements regarding the pregnancy outcome. We used the pulsatility index of the uterine arteries, the umbilical artery, the fetal aorta thoracica and the fetal middle cerebral artery. The measurements were obtained at various gestational ages between 24 and 32 weeks. Significant differences between unselected twin pregnancies and normal single pregnancies were not found. Moreover, there is no relation between the severity of an impaired perfusion and an adverse outcome of the pregnancy. The prediction of fetal distress (hypoxia, preterm birth, poor fetal growth, acidosis, and disturbed neonatal adaption) with doppler-score has a sensitivity of 25% and a positive predictive value of 63%. From this rather insufficient result we conclude that doppler screening in unselected twin pregnancies hardly proves to be useful.

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
D008431	Maternal-Fetal Exchange	Exchange of substances between the maternal blood and the fetal blood at the PLACENTA via PLACENTAL CIRCULATION. The placental barrier excludes microbial or viral transmission.	Transplacental Exposure,Exchange, Maternal-Fetal,Exposure, Transplacental,Maternal Fetal Exchange
D011237	Predictive Value of Tests	In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.	Negative Predictive Value,Positive Predictive Value,Predictive Value Of Test,Predictive Values Of Tests,Negative Predictive Values,Positive Predictive Values,Predictive Value, Negative,Predictive Value, Positive
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
D011256	Pregnancy Outcome	Results of conception and ensuing pregnancy, including LIVE BIRTH; STILLBIRTH; or SPONTANEOUS ABORTION. The outcome may follow natural or artificial insemination or any of the various ASSISTED REPRODUCTIVE TECHNIQUES, such as EMBRYO TRANSFER or FERTILIZATION IN VITRO.	Outcome, Pregnancy,Outcomes, Pregnancy,Pregnancy Outcomes
D011272	Pregnancy, Multiple	The condition of carrying two or more FETUSES simultaneously.	Multiple Pregnancy,Multiple Pregnancies,Pregnancies, Multiple
D011446	Prospective Studies	Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.	Prospective Study,Studies, Prospective,Study, Prospective
D001724	Birth Weight	The mass or quantity of heaviness of an individual at BIRTH. It is expressed by units of pounds or kilograms.	Birthweight,Birth Weights,Birthweights,Weight, Birth,Weights, Birth
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
D004200	Diseases in Twins	Disorders affecting TWINS, one or both, at any age.	Diseases in Twin,Twin, Diseases in,Twins, Diseases in,in Twin, Diseases,in Twins, Diseases