Definition: a method of measuring venous pressure, based on the Gärtner vein phenomenon; with the patient sitting erect, a vein is selected on the back of the hand that is held dependent, well below the level of the right atrium, and then is raised slowly; when the vein is observed to collapse, the distance between its level and that of the atrium is measured with a millimeter rule; this distance gives the venous pressure in millimeters of blood; thus the vein itself is used as a manometer communicating with the right atrium; highly inaccurate, especially in elderly subjects.
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