| Left ventricular chamber size (diameter) |
Normal / slightly enlarged |
Normal / decreased |
| Mitral valve systolic anterior motion |
Absent |
Present |
| Acoustic density of the myocardial wall |
Normal |
Increased |
| Interventricular septum thickness |
< 16 mm |
> 16 mm |
| Interventricular septum thickness ratio to posterior wall thickness |
< 1.3 |
> 1.3 |
| Interventricular septum motion and shape |
Regular |
Irregular |
| Left ventricular diastolic function |
Normal / improved |
Decreased |
| Ejection fraction |
Normal |
Depressed |
| Left atrial volume |
Increased moderately in proportion to other cardiac chambers |
Enlarged markedly |