Answer 4 An increase in jugular venous pressure greater than 3 cm H2O that is sustained for longer than 15 seconds. In patients with normal central venous pressure at rest who are suspected of having right ventricular failure, elicitation of the abdominojugular reflux sign may be useful. The sign is elicited by applying slow, steady pressure to the middle of the abdomen for 15 seconds. Click here to return to the questions
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