Key result
Doppler echocardiography suggested significant mechanical valve stenosis in a patient with a prosthetic aortic valve, but cardiac catheterization showed no evidence of valve dysfunction.
Why the study?
Are Doppler-derived gradients accurate compared to catheter-derived gradients in patients with prosthetic aortic valves?
Case Report (n=1)
Are Doppler-derived gradients accurate compared to catheter-derived gradients in patients with prosthetic aortic valves?
Doppler-derived gradients across prosthetic aortic valves may overestimate stenosis and should be correlated with clinical condition and invasive data when warranted.
May warrant invasive confirmation when Doppler suggests prosthetic aortic valve stenosis; hypothesis-generating for gradient accuracy validation.
Doppler‐ and catheter‐derived gradients have correlated well in patients with native aortic valvular stenosis. This relationship, however, is less certain in the presence of prosthetic aortic valves. We report a case with prosthetic aortic valve in which the echocardiogram suggested significant mechanical valve stenosis. The patient had no evidence of prosthetic valve dysfunction during cardiac catheterization. We conclude that Doppler‐derived gradients across prosthetic aortic valves should be correlated with the patient's clinical condition and supplemented by additional noninvasive and invasive data obtained during cardiac catheterization when warranted. prosthetic aortic valves, Doppler, cardiac catheterization
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Shammas et al. (1994) conducted a case report in Prosthetic aortic valve (n=1). Doppler echocardiography vs. Cardiac catheterization was evaluated on Valve gradient assessment. Doppler echocardiography suggested significant mechanical valve stenosis in a patient with a prosthetic aortic valve, but cardiac catheterization showed no evidence of valve dysfunction.
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