J Korean Soc Emerg Med.  2010 Jun;21(3):341-346.

Correlation Between Sonographic Inferior Vena Cava/Aorta Diameter Index and Central Venous Pressure

Affiliations
  • 1Department of Emergency Medicine, College of Medicine, Chungnam National University, Daejeon, Korea. rs0505@cnuh.co.kr

Abstract

PURPOSE
Body fluid status of patients in an emergency room environment is a very important parameter during clinical evaluation. In this study, we wanted to know the relationship between the diameter of the inferior vena cava and the diameter of the (IVC/Ao index) and central venous pressure (CVP) in hemodynamically unstable patients.
METHODS
This study was done prospectively in an emergency medical center of a hospital from January to August, 2009. We compared the diameter of the IVC, the diameter of inferior vena cava/the body surface area index (IVC/BSA index), the IVC/Ao index, and other variables. Before and after hydration of patients with a systolic blood pressure less than 90 mmHg and who had a central venous catheter in place. Then, we calculated the correlation coefficient for DeltaCVP, DeltaIVC/Ao index, and other indexes.
RESULTS
Fifty-nine patients were enrolled in the study. The mean IVC diameter before hydration was 14.3+/-2.7 mm; it was 15.6+/-2.7 mm after hydration (p<0.01). The IVC/BSA index before hydration was 8.75+/-1.72 and 9.55+/-1.79 after hydration (p<0.01). The IVC/Ao index before hydration was 1.08+/-0.23; it was 1.16+/-0.25 after hydration (p<0.01). The correlation coefficient for DeltaCVP and DeltaIVC was 0.37 (p<0.01); for DeltaCVP vs. the DeltaIVC/BSA index it was 0.37 (p<0.01); for the DeltaIVC/Ao index it was 0.27 (p=0.04).
CONCLUSION
CVP has a higher correlation to IVC diameter and to IVC/BSA index than to the IVC/Ao index. Hence, we should estimate the IVC/Ao index and use that estimate along with other indexes to evaluate body fluid status when dealing with hemodynamically unstable patients.

Keyword

Inferior vena cava; Central venous pressure; Ultrasonography

MeSH Terms

Blood Pressure
Body Fluids
Body Surface Area
Central Venous Catheters
Central Venous Pressure
Emergencies
Humans
Hypogonadism
Mitochondrial Diseases
Ophthalmoplegia
Prospective Studies
Vena Cava, Inferior
Hypogonadism
Mitochondrial Diseases
Ophthalmoplegia
Full Text Links
  • JKSEM
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2024 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr