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Does ultrasonography of the inferior vena cava predict volume responsiveness?

Three Part Question

In [critically ill adult patients], does [ultrasonography of the inferior vena cava] predict [volume responsiveness]?

Clinical Scenario

A 75 years old man presents at the ED with a pneumonia and severe sepsis. The patient is also known for cardiac failure. After being intubated and having received few liters of fluids, the patient does not seem to get better. The physician wonders if the ultrasonography of the inferior vena cava would help him to know if the patient is fluid-responsive or not.

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Ovid MEDLINE(R) 1950 to November week 4 2009 : 171
EMBASE 1950 to November week 4 2009 via Elsevier: 277
Cochrane library to November week 4 : 0