Why the study?
The authors aimed to present an image focus on an infrequent case of a rare subaortic circumferential fibromuscular tunnel presenting symptomatically in the sixth decade of life.
2D and 3D echocardiography are effective modalities for diagnosing rare cases of subaortic stenosis caused by a fibromuscular ridge in older adults.
May aid diagnosis of rare subaortic stenosis in older adults; extends limited case-based evidence on 3D echocardiography.
Subvalvular aortic stenosis (SAS) can be either a fixed stenosis resulting from subaortic anatomical obstacle or a dynamic stenosis because of hypertrophic cardiomyopathy. Here, we report a patient with a rare subaortic circumferential fibromuscular tunnel who became unusually symptomatic in her sixth decade of life. Transthoracic and mostly transesophageal echocardiography with 3D application is the preferred diagnostic modality. Indications for surgery include symptoms and LVOT gradient of 50 mm Hg. Our purpose is an image focus on this infrequent case.
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Pergolini et al. (2020) studied this question.
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