Umbilical artery Doppler velocimetry in normal pregnancies from 11+0 to 13+6 gestational weeks: A Taiwanese study
| Autor: | Jen Yu Tseng, Chia Pei Chang, Yi Jen Chen, Kuan Chong Chao, Chi Mou Juang, Chia-Ming Chang, Chih-Yao Chen, Ming Jie Yang, Hsing I. Wang, Huann Cheng Horng, Peng-Hui Wang, Ming Shyen Yen |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Adult
medicine.medical_specialty Umbilical Veins intrauterine growth restriction Population Diastole Taiwan Intrauterine growth restriction Gestational Age lcsh:Gynecology and obstetrics Umbilical vein Umbilical Arteries resistance index Young Adult Pregnancy medicine.artery Internal medicine Obstetrics and Gynaecology medicine Humans pulsatility index Ultrasonography Doppler Color education lcsh:RG1-991 umbilical vein Fetus education.field_of_study business.industry Obstetrics and Gynecology Gestational age Umbilical artery Middle Aged medicine.disease Surgery ductus venosus Cardiology Female Vascular Resistance business Ductus venosus Blood Flow Velocity |
| Zdroj: | Taiwanese Journal of Obstetrics & Gynecology, Vol 53, Iss 2, Pp 193-196 (2014) |
| ISSN: | 1028-4559 |
| Popis: | Objective The aim of this study is to investigate the relationship between umbilical artery flow and gestational age (GA) at 11–13 +6 weeks in normal pregnancy in the Taiwanese population. Materials and methods Two hundred and fifty-three normal singleton pregnancies with GA ranging from 11 to 13 +6 weeks were included in this study. The velocity of systolic, diastolic, and pulsatility index (PI) of the umbilical artery, and the mean velocity of the umbilical vein were recorded. Results One hundred and eighty-seven participants fulfilling the inclusion and exclusion criteria were analyzed. The mean maternal age was 31 (range 19–45) years, with a corresponding GA of 12 +4 (range 11–13 +6 ) weeks. The absence of end-diastolic velocity of the umbilical artery was observed in most of our cases (90.1%). No significant change was found in the vascular indices with GA for the mean velocity of the umbilical vein (mean velocity = 0.923 × GA − 1.594, r = 0.1497, p = 0.115). The systolic velocity of the umbilical artery and PI, however, behaved differently from the other variables. There was a significant increase in systolic velocity with GA [systolic wave (S wave) velocity = 0.237 × GA + 2.267; r = 0.149, p = 0.041]. By contrast, the PI showed a significant decrease in relation to the GA (PI = −0.016 × GA + 4.068; r = 0.196, p = 0.007). Conclusion The S-wave velocity of the umbilical artery increased with GA. By contrast, the PI of the umbilical artery showed a decreasing trend with GA. This may ensure optimal placental perfusion, which is necessary to accommodate the increased blood flow to the developing fetus. Furthermore, an absence of end-diastolic velocity in the first trimester and early second trimester was usually seen. |
| Databáze: | OpenAIRE |
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