Effect of aortic valve replacement on coronary flow velocity during metabolic stress in a patient with aortic stenosis.
The effect of aortic valve replacement on coronary flow velocity during atrial pacing and papaverine-induced-resistance vessel dilatation was tested in a patient with aortic stenosis. Although systolic flow reversal disappeared early after the valve replacement, rapid atrial pacing caused myocardial ischemia with lactate production. The coronary flow reserve also remained depressed. These results suggest that the alteration in the coronary flow profile early after the aortic valve replacement does not reflect an improvement in the flow increase during metabolic stress in a patient with aortic stenosis.
Takeuchi
M
M
Second Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
Nakashima
Y
Y
D001021:Aortic Valve / Q000601:surgery*; D001024:Aortic Valve Stenosis / Q000175:diagnosis / Q000503:physiopathology* / Q000601:surgery*; D001783:Blood Flow Velocity; D006328:Cardiac Catheterization; D002304:Cardiac Pacing, Artificial; D003326:Coronary Circulation / Q000502:physiology*; D004452:Echocardiography; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D008875:Middle Aged; D010208:Papaverine; D013312:Stress, Physiological / Q000503:physiopathology*; D014665:Vasodilator Agents
D014665:Vasodilator Agents; D010208:Papaverine