ECG Guru - Instructor Resources

A gathering place for instructors of ECG and cardiac topics.

       

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Serving ECG instructors and their students since 2011.
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Lewis Lead

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Lewis lead.  Enhancing view of P waves.

The Lewis Lead is used to enhance our view of atrial activity, emphasizing P waves and flutter waves.  Illustration by Dawn Altman.  Free for use in educational setting.  Contact Dawn for commercial use:  [email protected]

ECG Basics: Accelerated Junctional Rhythm Overriding Normal Sinus Rhythm

Wed, 05/17/2017 - 15:01 -- Dawn

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.

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1924:  Willem Einthoven wins the Nobel prize for inventing the electrocardiograph.

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