Friedreich's sign

Friedreich's sign
Friedreich's sign
Differential diagnosis	constrictive pericarditis

In medicine, Friedreich's sign is the exaggerated drop in diastolic central venous pressure seen in constrictive pericarditis (particularly with a stiff calcified pericardium) and manifested as abrupt collapse of the neck veins or marked descent of the central venous pressure waveform.^{[citation needed]}

The sign is named after Nikolaus Friedreich.^[1]

References[]

^ Friedreich's sign at Who Named It?

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[1] Friedreich's sign at Who Named It?

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