PMID: 9420865Jul 1, 1995Paper

Ultrasonic assessment of the amniotic fluid volume in diamniotic twins

Journal of the Society for Gynecologic Investigation
E F MagannJ C Morrison

Abstract

We sought to determine amniotic fluid (AF) volume in diamniotic twin gestations and to relate these findings to estimates using standard ultrasonic techniques. In this prospective study, AF volume in 45 diamniotic twin gestations at 27-38 weeks was assessed by sonography using the largest vertical pocket technique, the AF index, and the two-diameter pocket method. After the three different sonographic estimations of AF volume, the true amount of AF was determined using amniocentesis and a dye-dilution technique. The individual sac AF volume was less than 500 mL in 35 amniotic cavities, 500-2000 mL in 48 sacs, and greater than 2000 mL in seven. Individual AF volume between 500 and 2000 mL was correctly predicted by sonographic use of the largest vertical pocket in 47 of 48 patients (98%), the AF index in 47 of 48 (98%), and the two-diameter pocket method in 39 of 48 (81%). Estimation of AF volume less than 500 mL was significantly more accurate using the two-diameter pocket method compared with either the AF index (P = .015) or the largest vertical pocket technique (P < .0001). Currently available ultrasonic techniques to assess mid-range AF volume (500-2000 mL) in twin pregnancy are very accurate (81-98%). Oligohydramnios (less...Continue Reading

Citations

Jun 28, 2000·The Journal of Obstetrics and Gynaecology Research·M KanekoT Ikenoue
Dec 10, 1999·Obstetrics and Gynecology Clinics of North America·E F Magann, J N Martin
Jun 28, 2000·American Journal of Obstetrics and Gynecology·E F MagannJ C Morrison
Jul 27, 2014·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Danielle L IppolitoEverett F Magann
Apr 6, 2004·Obstetrics and Gynecology Clinics of North America·Teresa Marino
Oct 17, 2002·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·E F MagannJ C Morrison
Nov 20, 2002·Clinical Obstetrics and Gynecology·David B Schrimmer, Thomas R Moore
Feb 1, 2014·Clinical Kidney Journal·Ann-Maria GramkowMartin Tepel

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