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ECG Blog #451 — Premature Closure.

Ken Grauer, MD

QUESTIONS: Is this rhythm too fast to be sinus tachycardia? Are flutter waves hidden within the QRS and T waves? I say this for the simple reason that to pick any of the above 4 choices — is to imply with 100% certainty that you know the answer ( or, as is implied in the title of today’s Blog post — this would be premature closure).

Blog 168
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ECG Blog #409 — Every-Other-Beat.

Ken Grauer, MD

By the P s, Q s, 3 R Approach ( See ECG Blog #185 ): The rhythm is fast and QRS complexes are R egular. PEARL # 4: As emphasized in ECG Blog #204 , in which I review derivation of the bundle branch blocks — RBBB is a terminal conduction delay. Figure-2: I've labeled the initial ECG in today's case. And a Final Tracing.

Blog 175
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ECG Blog #370 — A Post-Arrest Tachycardia.

Ken Grauer, MD

With experience, applying the P s, Q s, 3 R Approach ( See ECG Blog #185 ) — to formulate the above steps in our initial assessment of the rhythm in Figure-1 can ( should ) be completed in less than 30 seconds! These are reviewed in ECG Blog #343. I reviewed the concept of Echo beats in ECG Blog #239.

Blog 78
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Wide Complex Tachycardia -- VT, SVT, or A Fib with RVR? If SVT, is it AVNRT or AVRT?

Dr. Smith's ECG Blog

male with pertinent past medical history including Atrial fibrillation, atrial flutter, cardiomyopathy, Pulmonary Embolism, and hypertension presented to the Emergency Department via ambulance for respiratory distress and tachycardia. Description : Regular Wide Complex Tachycardia at a rate of about 160.

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A fascinating electrophysiology case. What is this wide complex tachycardia, and how best to manage it?

Dr. Smith's ECG Blog

She had a single chamber ICD/Pacemaker implanted several years prior due to ventricular tachycardia. The ECG was interpreted as showing atrial flutter with 2:1 conduction. Answer : The ECG above shows a regular wide complex tachycardia. The heart rate could be compatible with that of a 2:1 conducted atrial flutter.

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A young man with tachycardia. Should We Try Adenosine?

Dr. Smith's ECG Blog

There is a regular narrow complex tachycardia. Thus, it is supraventricular tachycardia. It is important to remember that SVT includes Sinus Tachycardia! See many cases with use of Lewis Leads on this blog: Case continued The providers jumped to conclusions and gave adenosine. His pulse was 186. I do not have the strips.

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ECG Blog #379 — Why Tachy on Telemetry?

Ken Grauer, MD

As discussed in detail in ECG Blog #240 — the term, “SVT” — refers to any supraventricular rhythm (ie, with origin at or above the AV node ) that manifests a rate of ≥100/minute. By this definition, a variety of rhythms may qualify as “SVTs” — including sinus tachycardia, atrial flutter or fibrillation, MAT, AVRT/AVNRT, among others.

Blog 78