| Autor: |
Goldkrand, John, Moore, Daniel, Lentz, Sandra, Clements, Susan, Turner, Angela, Bryant, Jolene |
| Zdroj: |
Journal of Maternal-Fetal and Neonatal Medicine; 2000, Vol. 9 Issue: 4 p224-228, 5p |
| Abstrakt: |
Objective: Provide normative data for the volumetric blood flow (cc/min and cc/min/kg) in the umbilical artery.Methods: Flow was determined from an umbilical artery in 252 normal obstetrical patients from 18-40 weeks' gestation utilizing pulsed Doppler and color flow Doppler with an angle of insonation of 30-60°. Simultaneous velocimetry studies (S/D ratio, resistance and pulsatility indices), fetal biometry, and an anatomic survey were obtained to further define the normal population.Results: There was a steady increase in the flow (cc/min) in the umbilical artery as pregnancy progressed. Flow/kg showed a steady decline as fetal weight increased. Umbilical artery diameter increased until reaching a plateau at 32-34 weeks. Velocimetric results were consistent with known data.Conclusions: Volumetric blood flow in the umbilical artery can be determined with relative ease and normative data from 18-40 weeks is presented for the first time. |
| Databáze: |
Supplemental Index |
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