2020 Bradycardia Tachycardia 
Ken Grauer, MD
DECEMBER 23, 2023
RBBB is no longer seen after conversion to sinus rhythm — which supports our suspicion that the intermittent RBBB conduction seen every-other-beat during the tachycardia ( in Figure-1 ) was rate-related. Note that QRS morphology after conversion to sinus rhythm is very similar to QRS morphology of odd-numbered beats during the tachycardia.
Dr. Smith's ECG Blog
JUNE 23, 2023
A 50-something male with unspecified history of cardiomyopathy presented in diabetic ketoacidosis (without significant hyperkalemia) with a wide complex tachycardia and hypotension. Analysis: there is a wide complex tachycardia. This was the interpretation I put into the system: WIDE COMPLEX TACHYCARDIA. It is regular.
Dr. Smith's ECG Blog
FEBRUARY 27, 2023
Descriptive analysis of the ECG in today's case reveals a regular, narrow tachycardia at ~130/minute , without clear sign of sinus P waves. But the rate is ~130/minute — which is a bit fast for sinus tachycardia. So IF this is sinus tachycardia with a sinoventricular rhythm — then we have to explain WHY the rate is this fast.
Dr. Smith's ECG Blog
OCTOBER 15, 2024
He had multiple episodes of bradycardia and nonsustained ventricular tachycardia. Serial high sensitivity troponin T (URL 15 ng/L) values were negative and stagnant. Patient 1 remained in the hospital overnight. He went to the cath lab at 0900 the next morning. It was stented.
Dr. Smith's ECG Blog
SEPTEMBER 16, 2024
I have periodically called attention to examples of the Ashman phenomenon as they occur in Dr. Smith's ECG Blog ( See My Comments in the January 5, 2020 post — the June 17, 2020 post — and the March 30, 2023 post , among others ). But there are 3 other wide beats in the tachycardia that begins with beat #6 ( = beats #7; 13,14 ).
Dr. Smith's ECG Blog
APRIL 29, 2020
3 of the 4 have similarly bizarre PVCs. == MY Comment by K EN G RAUER, MD ( 4/29/2020 ): == Cardiac Arrest with Bizarre PVCs/Torsades de Pointes: Intriguing case with many interesting features. . _ Below, I post 4 more examples of ECGs that were recorded from patients who had Torsades, either shortly before, during, or after.
Dr. Smith's ECG Blog
JANUARY 23, 2024
Shortly after isoprenalin infusion was initiated, there were short runs of ventricular tachycardia. For example — bradycardia and AV conduction disturbances are not uncommon with Hyperkalemia , with these conduction disturbances most often resolving once serum K+ is corrected. She was started on isoprenalin (isoproterenol).
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