heart muscle damage) and left bundle branch block (causes arrhythmia). Usually requires other abnormal wave
forms in addition to the t wave abnormality.
Causes of small, flattened or inverted T waves are numerous and include ISCHEMIA (blocked or partially blocked arteries), age, race, hyperventilation, anxiety, drinking iced water, LVH, drugs (e.g. digoxin), pericarditis, PE, intraventricular conduction delay (e.g. RBBB)and electrolyte disturbance.