Population
1 60-year-old patient with discrete membranous sub-aortic stenosis
Comparison
Echocardiographic evaluation vs Cardiac catheterization
Design
Case_report
Authors
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May support echocardiography when catheterization misses subaortic lesions in LVOTO; single case leaves open broader diagnostic algorithms.
Echocardiography is essential for evaluating suspected left ventricular outflow tract obstruction, as it can detect sub-aortic membranes missed by catheterization.
Grenadier et al. (1982) studied this question.