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Figure 2: "Transesophageal echocardiography of septal measurements before myectomy (left) (thickness, 2.9 cm) and after myectomy (right) (thickness, 1.5 cm). The myectomy should extend beyond septomitral contact".[10] If the sub-aortic septum is resected only down to the tips of the mitral leaflets, flow is still redirected by the remaining septal bulge so that it comes from a posterior direction leading to persistent systolic anterior motion and obstruction.[59] The proximal incision should be placed away from the aortic annulus to prevent development of AI. LA: Left atrium; RV: Right ventricle; AI: Aortic insufficiency (reprinted with permission from Nagueh et al.[10] from Elsevier Inc.)

Figure 2: [10] If the sub-aortic septum is resected only down to the tips of the mitral leaflets, flow is still redirected by the remaining septal bulge so that it comes from a posterior direction leading to persistent systolic anterior motion and obstruction.[59] The proximal incision should be placed away from the aortic annulus to prevent development of AI. LA: Left atrium; RV: Right ventricle; AI: Aortic insufficiency (reprinted with permission from Nagueh et al.[10] from Elsevier Inc.)">