Electrocardiogram (ECG) showing sinus tachycardia at a rate of 150 beats/min
Electrocardiogram (ECG) showing sinus tachycardia at a rate of 150 beats/min
Note the difficulty in separating the P waves from the T waves in the standard leads. The P waves are most evident in lead V1 (arrow) where the terminal negativity suggests left atrial enlargement.
