2020 Defibrillator Tachycardia 
HeartRhythm
APRIL 30, 2024
Short-long-short (S-L-S) electrocardiographic cycle length patterns are associated with incidence of ventricular tachycardia (VT) and ventricular fibrillation (VF). It is also recognised that pacemakers can facilitate these cycle length sequences, and that the observation of these sequences can predict future VT/VF events.
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). In particular — QRS alternans during narrow SVT rhythms has been associated with reentry tachycardias.
Ken Grauer, MD
JUNE 14, 2024
The rhythm is regular — at a rate just over 100/minute = sinus tachycardia ( ie, the R-R interval is just under 3 large boxes in duration ). Continuing with assessment of ECG #1 in Figure-2: The rhythm is sinus tachycardia at ~110/minute. A series of VFib episodes followed — each time with successful defibrillation.
Dr. Smith's ECG Blog
SEPTEMBER 16, 2024
After resuscitation and defibrillation , there were no more episodes of TdP. Below is the patient’s 12 lead ECG following defibrillation. But there are 3 other wide beats in the tachycardia that begins with beat #6 ( = beats #7; 13,14 ). NT-proBNP was significantly elevated at 4900ng/L ( ref < 500ng/L ).
Dr. Smith's ECG Blog
APRIL 29, 2020
She was never defibrillated. 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. As was seen in this case — defibrillation and/or overdrive pacing may be needed. What do you think?
Dr. Smith's ECG Blog
SEPTEMBER 21, 2020
He was found in ventricular fibrillation and defibrillated, then brought to a local ED which does not have a cath lab. I’ve previously discussed clinical application of the Mirror Test on several occasions ( SEE My Comment at the bottom of the page in both the September 13, 2020 post and the February 16, 2019 post in Dr. Smith’s ECG Blog ).
Dr. Smith's ECG Blog
JANUARY 23, 2024
Shortly after isoprenalin infusion was initiated, there were short runs of ventricular tachycardia. She was given CRT-D (Cardiac Resynchronization Therapy-Defibrillator). During the next 24 hours, she experienced periods of complete AV block with a ventricular escape rhythm in the 20s. She was started on isoprenalin (isoproterenol).
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