Table 1 Anatomical types of subaortic stenosis
From: Double trouble - dual outflow tract obstruction in congenital heart disease: a case report
Type | Description | Location |
|---|---|---|
Type 1 | Subaortic membrane | Cranial portion of LVOT |
Type 2 | Fibromuscular ridge | Few centimetres below aortic valve |
Type 3 | Irregular fibromuscular additional tissue | Just below aortic valve |
Type 4 | Fibromuscular tunnel like narrowing of LVOT | Entire LVOT |