[Clinical case of the month. Pulsus alternans: a rare semiologic sign of severe left ventricular dysfunction]. / Le cas clinique du mois. Le pouls alternant: un élément sémiologique rare de dysfonction ventriculaire gauche sévère.

ABSTRACT

A paradigmatic case of pulsus alternans observed during exploration of a severe aortic valve disease is reported. Pulsus alternans is a rare semiologic sign of severe left ventricular dysfunction and the mechanisms of its appearance are discussed.