asymmetric septal hypertrophy


Also found in: Acronyms.

asymmetric septal hypertrophy (ASH),

abnormal enlargement, congenital or acquired, of the left ventricular side of the septum under the aortic valve causing outflow obstruction and abnormal movement of the mitral valve.
See also: systolic anterior motion.
References in periodicals archive ?
M/F, n 16/14 Mean (range) age at diagnosis, years 46 (18-60) Left ventricular wall thickness, n 13-16 mm 5 (16%) 17-19 mm 7 (23%) >19 mm 18 (61%) Concentric hypertrophy, n 11 Asymmetric septal hypertrophy, n 19 HC with gradient (range, 16-130 mmHg), n 16 Family history of HC, n 16 (54%) Mean (range) age, years 44 (24-60) No family history of HC, n 14 (46%) Mean (range) age, years 37 (20-56) No family history of HC and/or SCD, n 5 (13%) Table 2.
Some apical HCM patients may develop life-threatening complications such as sudden cardiac death, [10] which is more commonly seen in asymmetric septal hypertrophy than apical F having syncopal episodes, arrhythmias, ventricular wall thickness > 30 mm or a family history of sudden death may benefit from ICD (Implantable Cardioverter Defibrillator) placement.
Mechanism of left ventricular outflow obstruction in patients with obstructive asymmetric septal hypertrophy (idiopathic hypertrophic subaortic stenosis).

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