Normal reference ranges of inferior vena cava doppler indices from 14 to 40 weeks of gestation

Journal of Clinical Ultrasound : JCU
Suchaya LuewanTheera Tongsong

Abstract

To establish normal reference ranges of inferior vena cava (IVC) Doppler velocities in normal singleton pregnancies from 14 to 40 weeks. A prospective descriptive study was conducted on normal singleton pregnancies with confirmed gestational age. The sonographic measurements of IVC Doppler indices, including preload index, peak velocity index for vein, and pulsatility index for vein, were determined by experienced sonographers. A total of 645 measurements were performed, ranging from 12 to 30 measurements available for each gestational week. The relationship between gestational age and IVC Doppler indices was not linear. The best-fitted regression equations for the indices are as follows: [Formula: see text] [Formula: see text] [Formula: see text] (GA = gestational age in week) All IVC Doppler indices rapidly declined from 14 to 20 weeks of gestation and then they were relatively constant or slightly decreased throughout the rest of pregnancy. The tables of normal reference ranges were constructed. Normal reference ranges of IVC Doppler indices for each gestational week from 14 to 40 weeks were constructed. This normative data may be a useful noninvasive tool in evaluation of fetal cardiac function.

References

Apr 1, 1992·American Journal of Obstetrics and Gynecology·G RizzoC Romanini
Jan 1, 1991·Ultrasound in Medicine & Biology·T W HuismanJ W Wladimiroff
Jan 1, 1990·Fetal Diagnosis and Therapy·T Kanzaki, Y Chiba
Jun 1, 1996·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·G RizzoC Romanini
Dec 23, 2003·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·A A Baschat
Aug 6, 2004·American Journal of Obstetrics and Gynecology·Ahmet A BaschatChris R Harman
Sep 26, 2009·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Nobuhiro HidakaNorio Wake

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Citations

Jun 27, 2013·Seminars in Fetal & Neonatal Medicine·Elena SinkovskayaAlfred Abuhamad
Oct 31, 2015·Prenatal Diagnosis·Phudit JatavanTheera Tongsong
Mar 14, 2016·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Catherine GagnonFrederic Dallaire
Mar 13, 2014·Prenatal Diagnosis·Suchaya LuewanTheera Tongsong
Mar 10, 2017·The Journal of Maternal-fetal & Neonatal Medicine : the Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians·Phudit JatavanTheera Tongsong

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