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THE RELATIONSHIP BETWEEN UMBILICAL VENOUS BLOOD FLOW & FETAL WEIGHT IN THE LAST TRIMESTER | ||
| IRAQI JOURNAL OF MEDICAL SCIENCES | ||
| Article 1, Volume 7, Issue 4, 2009, Pages 4-10 | ||
| Authors | ||
| Abir T. Makki; Wasan I. Majeed; Maha M. Al-Bayati | ||
| Abstract | ||
| Background: Doppler applications in pregnancy are expanding exponentially. Flow velocity waveforms provide important information from 12 weeks to term, from maternal vessels, placental circulation and fetal systemic vessels. An important application is the quantitative calculation of umbilical blood flow volume. Objective: to assess the relation between the umbilical blood flow at one hand & fetal body weight & placenta weight on the other hand in the last trimester in both term & preterm labor groups Study design: A prospective study Setting: department of Gynecology & Obstetrics & Department of Radiology at Al-Kadhimiya Teaching Hospital Patients & methods: This study included 50 pregnant women at first stage of labor. The patients were classified into two groups; group A: Infants born at < 37 weeks of gestation and group B: those infants born at 37 weeks of gestation .The diameter of the umbilical vein was determined by ultrasound & spectral Doppler was used to assess velocity of blood in the umbilical vein & the umbilical blood flow (UBF) per unit fetal body weight & placental weight estimated in both groups. Results : A statistically significant difference was found in the diameter of the umbilical vein (7.84 mm vs. 8.62 mm , p=0.0001) , the volume of umbilical blood flow (410.22 mL/min vs. 523.20 mL/min, p=0.0001), UBF/Fetal weight (230.68 mL/min/kg vs. 166.79 mL/min/kg , p=0.0001 ) & UBF/Placental weight(102.65 mL/min/100gm vs. 87.23 mL/min/100gm , p=0.01) of group A & group B respectively while the mean velocity of blood flow in the umbilical vein showed no statistically significant difference in both groups (14.11 cm/s vs. 14.93 cm/s , P=0.8). Conclusion: The increase in umbilical blood flow is exceeded by the fetal growth and to a lesser degree by placenta growth. A significant reduction in the umbilical blood flow per unit fetal weight & placental weight take place with increasing gestational age. Keywords: umbilical venous blood flow, fetal body weight, placental weight | ||
| Keywords | ||
| umbilical venous blood flow; fetal body weight; placental weight | ||
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