Abstract
Accurate diagnosis of discrete subaortic stenosis (DSS) is essential because it has unique prognostic and therapeutic implications. Clinical diagnosis is difficult and even angiography has been reported to diagnose only 59% of cases. 1 Conventional echocardiography including M-mode and 2-dimensional sector scanning frequently enable a definitive diagnosis to be made and almost always raise the possibility of DSS. Nevertheless, suboptimal patient imaging and limited instrument resolution, especially where the subaortic membrane is located in close proximity to the aortic valve, limit the sensitivity and specificity of transthoracic imaging (TTE). In this report we evaluate the utility of transesophageal echocardiography (TEE) in patients with DSS.
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