If no P waves can be seen and the QRS complexes ... PR segment depression can be from acute pericarditis or an atrial infarction. Diffuse T wave inversion is stage III of the ECG changes in ...
The QT interval is the time from the beginning of the QRS complex, representing ventricular depolarization, to the end of the T wave, resulting from ventricular repolarization. The normal QT ...
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