2022 Defibrillator Tachycardia 
Dr. Smith's ECG Blog
OCTOBER 23, 2023
She was successfully revived after several rounds of ACLS including defibrillation and amiodarone. An Initial ECG was performed: Initial ECG: Sinus tachycardia with prolonged QT interval (QTc of 534 ms by Bazett). 2022 Jul;27(4):e12939. Epub 2022 Feb 11. No ischemic ST changes. She was given magnesium empirically.
Dr. Smith's ECG Blog
OCTOBER 21, 2022
Artifact can obscure the rhythm or cause misdiagnosis of rhythms such as atrial fibrillation, ventricular tachycardia, and ventricular fibrillation. As worrisome as the initial recording in leads I and II look — a glance at lead III should immediately reassure us that defibrillation is not needed!
Dr. Smith's ECG Blog
SEPTEMBER 29, 2024
This usually represents posterior OMI, but in tachycardia and especially after cardiac arrest, this could simply be demand ischemia, residual subendocardial ischemia due to the low flow state of the cardiac arrest. The April 8, 2022 post by Drs. This prompted cath lab activation. There is profound ST depression maximal in V1-V4.
EMS 12-Lead
AUGUST 22, 2022
From afar, there is gross tachycardia, cadence irregularities, and narrow QRS complexes that may, or may not, be Sinus in origin; and finally – a cacophony of wide complexes that might very well be ventricular in origin. McLaren : We’ve answered the first question – Sinus Tachycardia with episodic runs of wide QRS (RBBB morphology) and PVC’s.
Ken Grauer, MD
JUNE 27, 2024
IMPRESSION: Given the presence of a wide tachycardia — with 2 distinct QRS morphologies, and no sign of P waves — a presumed diagnosis of B i D irectional Ventricular Tachycardia has to be made. As reviewed by Almarzuqi et al ( Vasc Health Risk Mgmt 18:397-406, 2022 ) — Potential Causes of Bidirectional VT include: Digitalis toxicity.
Dr. Smith's ECG Blog
SEPTEMBER 2, 2024
There is a run of polymorphic ventricular tachycardia — which given the QT prolongation, qualifies as Torsades de Points ( TdP ). This episode self terminated before defibrillation was possible. This run of TdP is initiated by a PVC — but it then self-terminates. Discussion : The patient in today’s case presented with "seizures".
Dr. Smith's ECG Blog
JULY 21, 2024
This progressed to electrical storm , with incessant PolyMorphic Ventricular Tachycardia ( PMVT ) and recurrent episodes of Ventricular Fibrillation ( VFib ). He required multiple defibrillations within a period of a few hours. An ICD ( Implantable Cardioverter Defibrilator ) was placed prior to discharge. What do you think?
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