Relationship between umbilical and fetal cerebral blood flow velocity waveforms and umbilical venous blood gases
نویسندگان
چکیده
منابع مشابه
[Relationship between preeclampsia umbilical blood flow and perinatal outcomes].
OBJECTIVE To study the relationship between preeclampsia umbilical blood flow changes and the pregnancy outcomes. METHOD The umbilical arterial blood flow parameters including the S/D, pulsatility index (PI), resistance index (RI) and the average birth weight, Apgar score and placental weight changes were analyzed in 106 preeclampsia patients (including 43 mild and 63 severe cases), with 89 w...
متن کاملUmbilical Blood Flow
Background. This study investigated the effects of impairment to placental flow on flow patterns through the aortic isthmus because in the fetus, this vascular segment is the link between the parallel vascular systems perfused by the left and right ventricles. Methods and Results. A progressive increase in resistance to blood flow through the placenta was created in seven exteriorized fetal lam...
متن کاملUmbilical venous blood flow measurement: accuracy and reproducibility.
Umbilical venous blood flow could be considered a direct and physiological measurement of vascular placental function, representing the quantity of oxygen and nutrients reaching the fetus. The advent of high-technology ultrasound and pulsed Doppler has overcome some of the limitations of early studies. Indeed, Doppler measurement of umbilical venous blood flow has been found to be accurate when...
متن کاملFetal Doppler: umbilical artery, middle cerebral artery, and venous system.
One of the most important applications of Doppler ultrasonography in obstetrics is the detection of fetal anemia in pregnancies complicated by either red-cell alloimmunization or by other causes of fetal anemia. Doppler of the umbilical artery also has prognostic value in pregnancies affected by twin-twin transfusion syndrome undergoing in-utero intervention. Another potential major application...
متن کاملI-46: Obstetrical Doppler
Accurate assessment of gestational age, fetal growth, and the detection of fetal and placental abnormalities are major benefits of sonography. Color Doppler can be used to assist in the identification of vascular architecture, detection of vascular pathology and visualization of blood flow changes associated with physiologic processes and disease states. The clinical applications of obstetrical...
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ژورنال
عنوان ژورنال: Ultrasound in Obstetrics and Gynecology
سال: 1992
ISSN: 0960-7692
DOI: 10.1046/j.1469-0705.1992.02010018.x