Deepest vertical pocket method
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The deepest (maximal) vertical pocket (DVP) depth is considered a reliable method for assessing amniotic fluid volume on ultrasound 1,2. It is performed by assessing a pocket of a maximal depth of amniotic fluid which is free of an umbilical cord and fetal parts.
The usually accepted values are:
- 1. Magann E, Chauhan S, Washington W, Whitworth N, Martin J, Morrison J. Ultrasound Estimation of Amniotic Fluid Volume Using the Largest Vertical Pocket Containing Umbilical Cord: Measure to or Through the Cord? Ultrasound Obstet Gynecol. 2002;20(5):464-7. doi:10.1046/j.1469-0705.2002.00802.x - Pubmed
- 2. Magann E, Chauhan S, Doherty D, Magann M, Morrison J. The Evidence for Abandoning the Amniotic Fluid Index in Favor of the Single Deepest Pocket. Am J Perinatol. 2007;24(9):549-55. doi:10.1055/s-2007-986689 - Pubmed