Table 1 Helmy’s four-patterns classification. (Modified from ref. 38)
From: Echocardiographic diagnosis of the different phenotypes of hypertrophic cardiomyopathy
| Â | Distribution | Clinical features |
|---|---|---|
Pattern 1 | Septal hypertrophy alone | Less symptomatic phenotype |
Pattern 2 | Septum and adjacent segments’ hypertrophy but not apical hypertrophy | Less symptomatic phenotype |
Pattern 3 | Apical in combination with other LV segments’ hypertrophy | More easily detectable with the ecg |
Pattern 4 | Apical hypertrophy alone | More easily detectable with the ecg |