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VOLUME 19 , ISSUE 12 ( 2015 ) > List of Articles

RESEARCH ARTICLE

Agreement between inferior vena cava diameter measurements by subxiphoid versus transhepatic views

Jigeeshu V. Divatia, Harish Chaudhari, S. Janarthanan, Harish M. M, Siddique Suhail, Vijaya P. Patil

Keywords : Fluid responsiveness, inferior vena cava collapsibility, inferior vena cava diameter, inferior vena cava distensibility, limits of agreement

Citation Information : Divatia JV, Chaudhari H, Janarthanan S, M HM, Suhail S, Patil VP. Agreement between inferior vena cava diameter measurements by subxiphoid versus transhepatic views. Indian J Crit Care Med 2015; 19 (12):719-722.

DOI: 10.4103/0972-5229.171390

License: CC BY-ND 3.0

Published Online: 01-12-2015

Copyright Statement:  Copyright © 2015; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Context: Correcting hypovolemia is extremely important. Central venous pressure measurement is often done to assess volume status. Measurement of inferior vena cava (IVC) is conventionally done in the subcostal view using ultrasonography. It may not be possible to obtain this view in all patients. Aims: We therefore evaluated the limits of agreement between the IVC diameter measurement and variation in subcostal and that by the lateral transhepatic view. Settings and Design: Prospective study in a tertiary care referral hospital intensive care unit. Subjects and Methods: After Institutional Ethics Committee approval and informed consent, we obtained 175 paired measurements of the IVC diameter and variation in both the views in adult mechanically ventilated patients. The measurements were carried out by experienced researchers. We then obtained the limits of agreement for minimum, maximum diameter, percentage variation of IVC in relation to respiration. Statistical Analysis Used: Bland-Altman′s limits of agreement to get precision and bias. Results: The limits of agreement were wide for minimum and maximum IVC diameter with variation of as much as 4 mm in both directions. However, the limits of agreement were much narrower when the percentage variation in relation to respiration was plotted on the Bland-Altman plot. Conclusions: We conclude that when it is not possible to obtain the subcostal view, it is possible to use the lateral transhepatic view. However, using the percentage variation in IVC size is likely to be more reliable than the absolute diameter alone. It is possible to use both views interchangeably.


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