From: Intraventricular muscle bundle as a novel cause of left ventricular aneurysm
 | Abnormal ventricular muscle bundle-associated ventricular aneurysm | Left ventricular diverticulum [10] | Ventricular aneurysm formation after MI [11] |
---|---|---|---|
Sub-chamber position | Apex or side wall | Apical or lower posterior wall, outward bulging | Apex |
Wall thickness | Thin, myocardial three-layer structure disappears | Normal or thin; myocardial three-layer structure exists | Thin, myocardial three-layer structure disappears |
Wall motion | Normal or reduced | Normal | Absent or outward movement |
Communication between two chambers | Big or small | Small | Big |
Echo of Muscular trabeculae | Normal or slightly increased | Normal | Normal |
ECG | No Q wave in precordial leads | No Q wave in precordial leads | Q wave in precordial leads |