Chronic aortic regurgitation: a demonstration of the effect of bradycardia on left ventricular function.
A 50-year-old man with previously asymptomatic aortic regurgitation presented with clinical, echocardiographic and hemodynamic deterioration secondary to bradycardia. The effects of prolonged diastolic time were demonstrated in the catheterization laboratory; immediate improvement in left ventricular end diastolic and aortic diastolic pressures were noted after the insertion of a temporary pacemaker at a heart rate of 70 beats/min. In patients with aortic regurgitation and unexpected deterioration, bradycardia should be considered.
de la Rochelière
R
R
Cardiology Division, Notre-Dame Hospital, University of Montreal, Quebec.
Gagnon
R M
RM
Beaudet
R
R
Savard
D
D
D001022:Aortic Valve Insufficiency / Q000150:complications / Q000503:physiopathology*; D001919:Bradycardia / Q000503:physiopathology*; D002908:Chronic Disease; D006327:Heart Block / Q000209:etiology / Q000503:physiopathology / Q000628:therapy; D006352:Heart Ventricles / Q000503:physiopathology*; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial