Pulsus Alternans: Caught in Action
Emre Aslanger1, Burcu Aggül2, Duygu Genç Albayrak2
1Department of Cardiology, Başakşehir Pine and Sakura City Hospital, Health Sciences University, Istanbul, Turkey.
Abstract:
Pulsus alternans describes an arterial pulse waveform that shows alternating strong and weak beats despite a regular rhythm. Either discovered during physical examination or catheterization, pulsus alternans indicates severe left ventricular (LV) dysfunction and poor prognosis. There has been considerable debate about the underlying mechanism. We present a tracing which depicts a classic example of pulsus alternans and gives some clues about its initiation mechanism.
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