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Figure 2: A continuous wave doppler trace across left ventricular outflow tract from transgastric long-axis view showing: (a) a peak gradient of 50 mmHg before surgical intervention, (b) a dagger-shaped left ventricular outflow tract continuous wave doppler trace post-subaortic membrane resection with peak systolic gradient of 78 mmHg; suggestive of dynamic nature of obstruction, (c) post-myectomy peak gradient across left ventricular outflow tract was 16 mmHg

Figure 2:  A  continuous wave doppler trace across left ventricular outflow tract from transgastric long-axis view showing: (a) a peak gradient of 50 mmHg before surgical intervention, (b) a dagger-shaped left ventricular outflow tract continuous wave doppler trace post-subaortic membrane resection with peak systolic gradient of 78 mmHg; suggestive of dynamic nature of obstruction, (c) post-myectomy peak gradient across left ventricular outflow tract was 16 mmHg