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Critical Care: Imaging in Critical Illness |

Inferior Vena Cava Flat Ratio as a Predictor of Concordance or Discordance Between Subcostal and Transhepatic Measurements of Collapsibility

Rian Shah, MD; Rory Spiegel, MD; Christina Lu, MD; Sahar Ahmad, MD
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Stony Brook University Hospital, Stony Brook, NY


Copyright 2016, American College of Chest Physicians. All Rights Reserved.


Chest. 2016;150(4_S):293A. doi:10.1016/j.chest.2016.08.306
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SESSION TITLE: Imaging in Critical Illness

SESSION TYPE: Original Investigation Poster

PRESENTED ON: Wednesday, October 26, 2016 at 01:30 PM - 02:30 PM

PURPOSE: Ultrasound imaging of inferior vena cava (IVC) collapse from the subcostal sonographic window is utilized by intensivists to predict blood pressure response to volume resuscitation. Often the subcostal window is unobtainable and the transhepatic view from the right mid axillary space is the only available window. However, the anterior-posterior elliptical pattern into which the IVC collapses, called the IVC flat ratio (Naruse, 2007), may limit this view’s clinical utility. This study aimed to (1) describe concordance between subcostal and transhepatic measurements to predict fluid responsivity (cIVCsc and cIVCth respectively) and (2) describe how the IVC flat ratio correlates to concordance.

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