You have performed an ECG on a patient who has come to the clinic complaining of "fluttering" in his chest. A portion of the ECG tracing is shown here. What type of dysrhythmia does this patient have?

Question

Quizplus · Accepted Answer

The ECG tracing shows regular narrow QRS complexes at a rate of approximately 130 bpm. There are no visible P waves and the rhythm appears to originate from the AV node (junctional). This is characteristic of junctional tachycardia. Sinus tachycardia would have visible P waves preceding each QRS complex, and accelerated junctional rhythm would have a slower rate (usually 60-100 bpm). Ventricular tachycardia would have broader QRS complexes and a different morphology.

You Have Performed an ECG on a Patient Who Has