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Comparative study of two transabdominal approaches for uterine artery Doppler velocimetry at 11-13 weeks.
MedLine Citation:
PMID:  22331567     Owner:  NLM     Status:  Publisher    
OBJECTIVE: To compare the feasibility of two transabdominal approaches of first-trimester uterine artery Doppler and to evaluate the correlation with pulsatility index (PI) in the second-trimester. METHODS: This was a prospective longitudinal Doppler study of the uterine arteries at 11-13 and 21-22 weeks' gestation. Transabdominal ultrasound and color Doppler were used to measure the uterine artery PI on the ascending branch of uterine artery at the level of the internal cervical os (site A) and at the level of the apparent crossover with the external iliac artery (site B) at 11-13 weeks and at site B only at 21-22 weeks. In all cases the measured left and right PI were converted to a multiple of median (MoM) for gestational age and the inter-correlation between the measurements at different sites and gestations were calculated using non-parametric analysis (Spearman rank correlation). RESULTS: Satisfactory measurements were obtained at 11-13 weeks from both uterine arteries in all 81 women using site A and in 50 (62%, 95% confidence limits: 50 - 72%) using site B (p<0.01) and at 21-22 weeks from all cases. In the 50 cases with measurements from both sites the correlation of PI MoMs between sites A and B at 11-13 weeks was only moderate (ρ = 0.61). The correlation between PI MoMs in the first- and second-trimester was higher for site A than site B (ρ = 0.73 vs. ρ = 0.47, p<0.01). CONCLUSION: Measurement of uterine artery PI at 11-13 weeks is more achievable at the level of the internal cervical os rather than at the level of the apparent crossover with the external iliac vessels and it correlates better with second-trimester PI. Copyright © 2012 ISUOG. Published by John Wiley & Sons, Ltd.
Jessica Lefebvre; Suzanne Demers; Emmanuel Bujold; Kypros Nicolaides; Mario Girard; Normand Brassard; Francois Audibert
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-13
Journal Detail:
Title:  Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology     Volume:  -     ISSN:  1469-0705     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9108340     Medline TA:  Ultrasound Obstet Gynecol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 ISUOG. Published by John Wiley & Sons, Ltd.
Department of Obstetrics and Gynecology, Faculty of Medicine, Université Laval, Quebec City, Qc, Canada.
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