<unk>  is a paradoxical rise in jugular venous pressure (JVP) on inspiration, or a failure in the appropriate fall of the JVP with inspiration. It can be seen in some forms of heart disease and is usually indicative of limited right ventricular filling due to right heart dysfunction.
Kussmaul's sign
Bancroft's sign
Adson's sign
Fothergill's sign
Piskacek's sign
Litten's sign 
Litten's sign
Peabody's sign