A 12 lead EKG is strongly recommended at the time of the initial diagnosis of<unk><unk> .  Common findings on an EKG in these patients include tall R waves, deep Q waves, inverted T waves, ST segment abnormalities and 'strain pattern' in the chest leads.  The deep Q waves indicate septal hypertrophy and similarly deeply inverted T waves indicate apical hypertrophy.
Hypertrophic cardiomyopathy electrocardiogram
Left ventricular aneurysm electrocardiogram
Eisenmenger’s syndrome electrocardiogram
Mitral stenosis electrocardiogram
Aortic regurgitation electrocardiogram
Aortic stenosis electrocardiogram
Tricuspid stenosis electrocardiogram
Bicuspid aortic stenosis electrocardiogram