Normal Doppler flow velocity waveforms in the fetal ductus arteriosus in the first half of pregnancy

Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology
C BrezinkaJ W Wladimiroff


Ductus arteriosus flow velocity patterns were studied in 298 women between 9 and 25 weeks of gestation using transvaginal or transabdominal Doppler ultrasound. Technically acceptable recordings were first obtained at 11 weeks resulting in 231 women for further analysis. Ductal waveforms show a significant change in shape from early pregnancy to mid-pregnancy, in that end-diastolic velocities are absent until 13 weeks, are present in 50% at 15 weeks and are present in all cases from 17 weeks. Regression analysis demonstrated a statistically significant linear increase with advancing gestational age for all flow velocity parameters except for the pulsatility index which remained stable during the entire study period.


May 1, 1996·Journal of Clinical Ultrasound : JCU·G MariB Uerpairojkit
Apr 1, 1996·Obstetrics and Gynecology·D M Sherer, M Y Divon
Jun 10, 2000·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·G Mielke, N Benda
Feb 24, 2012·Pediatric and Developmental Pathology : the Official Journal of the Society for Pediatric Pathology and the Paediatric Pathology Society·L Cesar PeresRoobin Johki
May 30, 2009·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·G Acharya
Jan 1, 1994·Ultrasound in Medicine & Biology·C BrezinkaA C Gittenberger-de Groot
Oct 21, 2005·Seminars in Fetal & Neonatal Medicine·Torvid Kiserud

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