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

View Article: PubMed Central - PubMed

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.

No MeSH data available.


Ultrasonographic determination of inspiratory inferior vena cava (IVCinsp) and expiratory inferior vena cava (IVCexp).
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Figure 1: Ultrasonographic determination of inspiratory inferior vena cava (IVCinsp) and expiratory inferior vena cava (IVCexp).

Mentions: The CVP, intra-abdominal pressure, and IVC diameters were measured in all patients. IVC diameters were measured by emergency department residents and specialists who received a standard basic Ultrasound course for two days. Ultrasound was performed using a Toshiba Aplio500 Ultrasound device and 3 mHz convex probe. The M-mode subxiphoidal window used to view the IVC, and both ends of the inspiration and expiration diameters were recorded in millimeters (Fig.1).


A Non-invasive Method for Assessment of Intravascular Fluid Status: Inferior Vena Cava Diameters and Collapsibility Index
Ultrasonographic determination of inspiratory inferior vena cava (IVCinsp) and expiratory inferior vena cava (IVCexp).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5017087&req=5

Figure 1: Ultrasonographic determination of inspiratory inferior vena cava (IVCinsp) and expiratory inferior vena cava (IVCexp).
Mentions: The CVP, intra-abdominal pressure, and IVC diameters were measured in all patients. IVC diameters were measured by emergency department residents and specialists who received a standard basic Ultrasound course for two days. Ultrasound was performed using a Toshiba Aplio500 Ultrasound device and 3 mHz convex probe. The M-mode subxiphoidal window used to view the IVC, and both ends of the inspiration and expiration diameters were recorded in millimeters (Fig.1).

View Article: PubMed Central - PubMed

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.

No MeSH data available.