Abstract
Umbilical artery How curves were obtained by Doppler ultrasonography before, during, and after episodes of fetal bradycardia in the active stage of labor in 6 women. Between 126 and 1, 607 Doppler wave forms were analyzed for each patient. During the periods of bradycardia all the umbilical artery resistance flow parameters increased (p <0.00001). The increase in resistance did not precede the change in heart rate. This study presents an accurate and reproducible method for continuous evaluation of the changes in the impedance of fetal blood flow during fetal heart rate changes, thereby enabling detailed assessment of circulatory disturbances occurring during labor and delivery.
Original language | English |
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Pages (from-to) | 186-195 |
Number of pages | 10 |
Journal | Fetal Diagnosis and Therapy |
Volume | 9 |
Issue number | 3 |
DOIs | |
State | Published - 1 Jan 1994 |
Externally published | Yes |
Keywords
- Bradycardia
- Doppler
- Umbilical artery resistance
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
- Embryology
- Radiology Nuclear Medicine and imaging
- Obstetrics and Gynecology