Key result
Starr-Edwards mitral prostheses exhibited significantly higher peak pressure gradients at peak exercise compared to Björk-Shiley prostheses (22 vs 16 mm Hg; p<0.05).
Why the study?
Does exercise Doppler echocardiography reveal hemodynamic differences between Björk-Shiley and Starr-Edwards mitral prosthetic valves?
Population
17 patients with mitral prostheses (11 with Björk-Shiley and 6 with Starr-Edwards valves)
Comparison
Submaximal supine exercise with Doppler… vs Resting baseline measurements
Design
Cross-sectional
Authors
Loading...
Exercise may unmask higher gradients with Starr-Edwards mitral prostheses; hypothesis-generating for exercise Doppler in prosthetic valve assessment.
Observational (n=17)
Does exercise Doppler echocardiography reveal hemodynamic differences between Björk-Shiley and Starr-Edwards mitral prosthetic valves?
Absolute Event Rate: 22% vs 16%
p-value: p=<0.05
Exercise Doppler echocardiography can uncover hemodynamic differences between mechanical mitral prostheses, providing important information for patients with borderline resting measurements.
Reisner et al. (1989) conducted an observational in Mitral prosthetic valves (n=17). Starr-Edwards mitral prosthesis vs. Björk-Shiley mitral prosthesis was evaluated on Peak pressure gradient at peak exercise (p=<0.05). Starr-Edwards mitral prostheses exhibited significantly higher peak pressure gradients at peak exercise compared to Björk-Shiley prostheses (22 vs 16 mm Hg; p<0.05).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: