This case highlights an unusual continuous-wave Doppler profile in a patient with midventricular hypertrophic cardiomyopathy and obstruction.
Hypothesis-generating for atypical Doppler patterns in midventricular HCM; leaves open validation of diagnostic criteria.
Imaging of a 62-year-old woman with hypertrophic cardiomyopathy revealed mid-septal hypertrophy (22 mm), an apical aneurysm ( Panel A ), and midventricular obstruction (MVO) with an unusual continuous-wave Doppler (CWD) profile ( Panel B ). Initially, CWD showed an increase in midventricular systolic velocities to 2.7 m/s ( Panels B 1 and C 1). In midsystole, MVO became sufficiently severe to cause …
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Ong et al. (2014) studied this question.