A ventricular aneurysm has one of the following characteristic features
left ventricular aneurysm can be diagnosed on ECG when there is persistent ST segment elevation occurring 6 weeks after a known transmural myocardial infarction (usually an anterior MI). Without knowing the past medical history, the ECG changes of an aneurysm may mimic an acute anterior MI. Ref Davidson 23rd edition pg 465
Persistent ST elevation
Persistent ST depression
Left bundle branch block
Right bundle branch block
C.V.S