ECG

abnormalities

acutemyocardialinfarction

pericarditis

electricalalternans

conductionblocks

sinusarrhythmia

axisdeviation

chamberhypertrophy

accessorypathways

Brugadasyndrome

hypertrophicobstructive

cardiomyopathy

smallQRS

complexes

electrolytedisturbances

pulmonaryembolism

hypothermia

dextrocardiacauses ofa tall R wavein V1