Rarely isolated finding (usually RVH/RAD also)
P amplitude >2.5mm in II
Large biphasic p wave in V1 (> 1.5 mm in V1 and V2)<unk>  atrial hyper.-initial component is larger in V1 than V6
p-mitrale-m notched p wave in leads 1 and 2. Greater than .12 seconds.
Right atrial enlargement
Left atrial enlargement
Left ventricular hypertrophy
Right ventricular hypertrophy
Widened mediastinum
Stone heart
Left ventricular aneurysm
Pulsus paradoxus