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BibTeX
Reference ranges for Doppler assessment of uterine artery resistance and pulsatility indices in dichorionic twin pregnancies
Ultrasound in obstetrics & gynecology, 2011-06, Vol.37 (6), p.663-667
Geipel, A.
Hennemann, F.
Fimmers, R.
Willruth, A.
Lato, K.
Gembruch, U.
Berg, C.
2011
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Geipel, A.
Hennemann, F.
Fimmers, R.
Willruth, A.
Lato, K.
Gembruch, U.
Berg, C.
Titel
Reference ranges for Doppler assessment of uterine artery resistance and pulsatility indices in dichorionic twin pregnancies
Ist Teil von
Ultrasound in obstetrics & gynecology, 2011-06, Vol.37 (6), p.663-667
Ort / Verlag
Chichester, UK: John Wiley & Sons, Ltd
Erscheinungsjahr
2011
Quelle
Free E-Journal (出版社公開部分のみ)
Beschreibungen/Notizen
Objectives To construct reference ranges of uterine artery Doppler parameters against gestation in twin pregnancies and to present charts of the pulsatility index (PI) and resistance index (RI) for clinical use. Methods This was an observational study of the uterine circulation in 557 women with dichorionic twin pregnancies at 17–38 weeks' gestation. Uterine artery measurements were performed by color and pulsed Doppler imaging. The uterine artery PI and RI were calculated as a mean of both sides. Reference ranges were constructed by regression of each index on gestational age. For this purpose, a regression model with fractional polynomials was fitted to the data. Furthermore, the presence of uterine artery notching was recorded. Results New reference curves and tables of percentiles of the uterine artery PI and RI are presented. The calculated indices both showed a significant decrease with gestational age. Compared with singleton values, mean twin PI values were lower during the whole course of pregnancy. The prevalence of bilateral notching was 4.6% at 17–19 weeks' gestation and 3.1% at 20–24 weeks. Conclusions Uterine artery Doppler indices in twin pregnancies are lower than in singleton pregnancies. Therefore, the use of uterine artery reference ranges adapted to twin gestations seems more appropriate for identifying low‐ and high‐risk groups. Copyright © 2011 ISUOG. Published by John Wiley & Sons, Ltd.
Sprache
Englisch
Identifikatoren
ISSN: 0960-7692, 1469-0705
eISSN: 1469-0705
DOI: 10.1002/uog.8859
Titel-ID: cdi_proquest_miscellaneous_868999171
Format
–
Schlagworte
Adult
,
Arteries
,
Biological and medical sciences
,
Cardiovascular system
,
Color
,
Data processing
,
Diseases of mother, fetus and pregnancy
,
Doppler effect
,
Doppler sonography
,
Female
,
fetal growth restriction
,
Gestational Age
,
Gynecology
,
Gynecology. Andrology. Obstetrics
,
Humans
,
imaging
,
Investigative techniques, diagnostic techniques (general aspects)
,
Medical sciences
,
Obstetrics
,
Pre-Eclampsia - diagnostic imaging
,
Pre-Eclampsia - physiopathology
,
Pregnancy
,
Pregnancy, Multiple - physiology
,
Pregnancy. Fetus. Placenta
,
pre‐eclampsia
,
reference curves
,
Reference Values
,
Regression analysis
,
Risk Factors
,
Risk groups
,
twin pregnancy
,
Twins
,
Twins, Dizygotic
,
Ultrasonic investigative techniques
,
Ultrasonography, Doppler, Color - methods
,
Ultrasonography, Prenatal - methods
,
Ultrasound
,
uterine arteries
,
Uterine Artery - diagnostic imaging
,
Uterine Artery - embryology
,
Uterine Artery - physiopathology
,
Uterus
,
Vascular Resistance - physiology
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