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. 2016 Jul-Aug;32(4):836-40.
doi: 10.12669/pjms.324.10290.

A Non-invasive Method for Assessment of Intravascular Fluid Status: Inferior Vena Cava Diameters and Collapsibility Index

Sinan Karacabey  1 , Erkman Sanri  2 , Ozlem Guneysel  3
Affiliations

A Non-invasive Method for Assessment of Intravascular Fluid Status: Inferior Vena Cava Diameters and Collapsibility Index

Sinan Karacabey et al. Pak J Med Sci. 2016 Jul-Aug.

Abstract

Objective: To evaluate the correlation between central venous pressure (CVP) and inferior vena cava (IVC) diameters measured by ultrasonography (Ultrasound) in critically ill patients.

Methods: Intubated critically ill patients were enrolled. The CVP values were measured using a U-tube manometer and were compared to the IVC diameters and collapsibility index, which were measured by bedside Ultrasound. Patients younger than 18 years old, who were not intubated, who had an abdominal pressure greater than 12 mmHg, and/or who were admitted for trauma were excluded from the study.

Results: Eighty three patients with a mean age of 73.6±11.2 years were enrolled. The most common diagnosis was sepsis (21 patients, 25.30%). IVC inspiration measurements were statistically significantly correlated with CVP measurements (p0.05, r: 0.1). IVC collapsibility measurements showed a negative correlation with CVP measurements (p<0.01, r: 0.68).

Conclusions: There is a strong correlation between CVP and IVC diameters and the collapsibility index. This is a new formula for evaluating CVP, based on our statistical analyses.

Keywords: End-tidal capnography; Intubation; Ultrasonography.

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Conflict of interest statement

Declaration of interest: None.

Figures

Fig.1
Fig.1
Ultrasonographic determination of inspiratory inferior vena cava (IVCinsp) and expiratory inferior vena cava (IVCexp).
See this image and copyright information in PMC

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