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What abnormalities can be observed in the T wave of an ECG, and in what conditions do they typically occur?
Biology
ScanSolve AI Answer
The T wave on an ECG can show several abnormalities:
- The T wave becomes inverted (negative) in cases of myocardial ischemia (reduced blood flow to the heart muscle), ventricular hypertrophy (enlargement of the ventricles), extrasystoles (premature heartbeats), bundle branch block (a delay or obstruction along the electrical pathways that make the heart beat), and digitalis overdosage.
- Conversely, the amplitude of the T wave increases in situations of sympathetic overactivity (e.g., stress or anxiety), during muscular exercise, and in conditions like hyperkalemia (high potassium levels in the blood).
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