Central Venous and Abdominal Pressures and the Inferior Vena Cava
Status:
Unknown status
Trial end date:
2014-06-01
Target enrollment:
Participant gender:
Summary
The elliptic shape of inferior vena cava (IVC) sections, while hindering the ultrasound
measurement of IVC diameter, may provide a useful tool to estimate central venous pressure
(CVP). Hypothetically, the higher is CVP and more the ratio R between minimum and maximum
diameters approximates 1. The purpose of this study is to determine R values in four
different sections before and after a fluid load test, in order to evaluate if R is affected
by the test and at which level the variation is larger.
The secondary endpoint is to search for the parameter best predictive of the positivity of
the fluid load test among IVC minimum and maximum diameters, eccentricity, section area, and
blood velocity at the level that presented the largest variations after the fluid load.