Stepwise interpretation of ECG

ID 123 –Atrial tachycardia

ID 123 – 67 year old woman complaining of palpitation

ID 123 – 67 year old woman complaining of palpitation

The patient has a narrow-QRS tachycardia (160/min) – Can your see P waves?

ID 123 – 67 year old woman complaining of palpitation

If your answer was yes, go to the next slide, if it was no, look again and then go ahead

ID 123 – Atrial tachycardia, 160/min

P waves precede the QRS complexes. They are negative in II, III, aVF and V3-V6. The PR interval is 140 msec. The arrhythmia is Atrial Tachycardia.

ID 123 – Final diagnosis: Atrial tachycardia, 160/min

The QRS axis is normal. The QRS duration is 80 msec. There is no ventricular hypertrophy. No signs of infarction. T waves are seen in I, aVL and V4-V6 and appear normal.

ID 123 – Final diagnosis: Atrial tachycardia, 160/min

The QRS axis is normal. The QRS duration is 80 msec. There is no ventricular hypertrophy. No signs of infarction. T waves are seen in I, aVL and V4-V6 and appear normal.