Why the study?
What are the normal Doppler echocardiographic velocities and pressure half times for the Carpentier-Edwards xenograft?
Population
Patients with Carpentier-Edwards xenografts with clinically normal prosthetic valve function and no clinical…
Design
Cross-sectional
Follow-up
mean 38 months following surgery
Authors
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Reference velocities aid Carpentier-Edwards prosthesis assessment; leaves open whether time-dependent Doppler changes signal progressive obstruction.
What are the normal Doppler echocardiographic velocities and pressure half times for the Carpentier-Edwards xenograft?
This study establishes normal reference ranges for Doppler echocardiographic parameters of Carpentier-Edwards xenografts and notes a time-dependent increase in indices of obstruction.
Gibbs et al. (1986) studied this question.
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