This strip shows a junctional rhythm at a rate of 110 beats per minute. The QRS complexes are slightly wide at .10 seconds (100 ms), and they are within the parameters for supraventricular rhythm. The term, "junctional tachycardia" could be used, also, but this is not likely a "reentrant" junctional tachycardia, which would be fast, regular, and have a sudden onset. That type of junctional tachycardia is a PSVT. In this strip, we can see the underlying sinus rhythm in P waves that appear to pop up randomly.
This series of strips was donated by Arnel Carmona, and was taken from a patient admitted to the hospital for a urinary tract infection. No other history is known. On close examination of this rhythm what do we see?
Strip 1: Narrow-complex tachycardia with NO apparent P waves.
Strip 2: Some irregularity, with long regular groups and still NO P waves.
This very interesting set of strips was donated to the ECG Guru by Arnel Carmona, well-known to many of you as the Administrator of the blog, "ECG Rhythms" and the FB page by the same name. He is a frequent contributer to the FB page, "EKG Club", and is an ECG Guru! This set of strips was previously posted to his blog and to the EKG Club.
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