Friedreich's_sign
Friedreich's sign
In medicine, Friedreich's sign is the diastolic collapse of the neck veins due to adhesion of the pericardium, leading to a dramatic Y descent in jugular venous pressure, and may be seen in constrictive pericarditis with a calcified pericardium, and in tricuspid regurgitation.
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Last updated on Monday June 23, 2008 at 07:17:12 PDT (GMT -0700)
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