Reversible myocardial stunning with ecg changes of acute myocardial infarction  is seen in
Restrictive cardiomyopathy
Hypertrophic cardiomyopathy
Takatsubo cardiomyopathy
Dilated  cardiomyopathy
Takatsubo cardiomyopathy is stress induced infundibular spasm resulting in LV hypokinesia . ECG shows ST elevation