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T wave alternans is characterized by variation in T-wave morphology in the setting of consistent pacemaker and QRS morphology. (1) She had an uneventful ICU course and was extubated for ongoing care with the inpatient psychiatric service. Teaching Points: 1. NOTE : On occasion — Alternans may be seen with monomorphic VT ( Maury and Metzger ).
That occurs in right heart failure and constrictive pericarditis. Constrictive pericarditis is an important cause for Kussmaul sign or inspiratory increase in jugular venous pressure. On the other hand, the Y descent is very prominent in constrictive pericarditis, and it is known as Friedreich’s sign.
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