Ischemia Pacemaker Tachycardia 
Dr. Smith's ECG Blog
JANUARY 9, 2024
She had a single chamber ICD/Pacemaker implanted several years prior due to ventricular tachycardia. Are you confident there is no ischemia? Answer : The ECG above shows a regular wide complex tachycardia. Said differently, the ECG shows a rather slow ventricular tachycardia with a 2:1 VA conduction. Is this: 1.
Dr. Smith's ECG Blog
JANUARY 2, 2025
Place temporary pacemaker 3. It should be kept in mind that on occasions, beta-one agonist can result in increased ventricular ectopy e.g., in severe myocardial ischemia (by increasing myocardial demand), or sometimes with congenital long-QT syndrome. Even with tachycardia and a paced QRS duration of ~0.16
Dr. Smith's ECG Blog
JANUARY 23, 2024
Shortly after isoprenalin infusion was initiated, there were short runs of ventricular tachycardia. Isoprenalin was discontinued, and a temporary transveous pacemaker was implanted. The patient stabilized following pacemaker placement. The following ECG was recorded during one of these episodes of VT.
Dr. Smith's ECG Blog
OCTOBER 23, 2023
An Initial ECG was performed: Initial ECG: Sinus tachycardia with prolonged QT interval (QTc of 534 ms by Bazett). She was admitted to the ICU where subsequent ECGs were performed: ECG at 12 hours QTc prolongation, resolution of T wave alternans ECG at 24 hours Sinus tachycardia with normalized QTc interval. No ischemic ST changes.
Dr. Smith's ECG Blog
JANUARY 1, 2024
While the initial impression might not immediately suggest ventricular tachycardia (VT), a closer examination raises suspicion. Again, see Ken's discussion below) Discussion continued The absence of pace spikes suggests this is not a pacemaker/ICD-related rhythm in this patient with an ICD. What is the rhythm? Smith : Are they P-waves?
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 ). There is no definite evidence of acute ischemia. (ie, Some residual ischemia in the infarct border might still be present.
Dr. Smith's ECG Blog
JULY 5, 2018
We admitted him for probable EP study and possible pacemaker. He underwent pacemaker placement and is doing fine. SSS is by far the most common reason for permanent pacemaker placement. The indication for pacemaker placement with SSS is symptomatic bradycardia. Hyperkalemia might do this, but the K was normal.
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