There is a regular rhythm, although the fourth and ninth QRS complexes (*) are slightly early — ie, a shorter RR interval. The QRS complexes are narrow and have a normal morphology and axis. The rate ...

The correct diagnosis is atrial rhythm with AV dissociation and accelerated junctional rhythm (Figure 2). Figure 2. Courtesy of Philip J. Podrid, MD. The rhythm is regular at a rate of 96 beats/min, ...

This is an accelerated junctional rhythm and P wave activity can be seen at the end of the QRS complexes in lead I and lead III. The QT is quite prolonged. This ECG was from a patient with genetic ...

A specialist tells how to interpret subtle changes on the ECG, including those caused by two life-threatening syndromes you might otherwise miss. Reading ECGs is like learning to appreciate art—it is ...

Sometimes, an abnormal EKG reading is a normal variation in a person’s heart rhythm. In other cases, it may be due to an underlying heart condition or a reaction to medication. An electrocardiogram ...

An electrocardiogram (Fig. 1) of the Case Records of the Massachusetts General Hospital (in the September 18 issue) needs a few comments or corrections. First of all, the entire tracing in Figure 1 is ...

An EKG measures the heart’s electrical activity and can detect various issues, including heart attacks, rhythm abnormalities, and electrolyte imbalances. Seek immediate medical help if you experience ...

This 81 year old woman presents to her GP with blackouts lasting a few seconds. What does her ECG show? A Sinus rhythm with Mobitz I second degree (Wenckebach) AV block The ECG shows consistent p ...