Atrial Fibrillation Pacemaker Tachycardia 
Dr. Smith's ECG Blog
APRIL 2, 2024
So it must be atrial fibrillation. Then I always look to see if the initial deflection of the QRS has a lot of voltage change per change in time (seen in tachycardias that are initiated from above the ventricle because the propagate through fast conducting purkinje fiber. Pacemaker mediated tachycardia!
Dr. Smith's ECG Blog
JUNE 21, 2024
A patient in the ICU with significant underlying cardiac disease [HFrEF 30%, non-ischemic cardiomyopathy, LBBB s/p CRT-D (biventricular pacer), AVNRT s/p ablation a few yrs ago, hx sinus tachycardia while on max tolerated BB therapy] went into a regular wide-complex tachycardia after intubation for severe COPD exacerbation. What to do?
HeartRhythm
APRIL 30, 2024
Repetitive Non-reentrant Ventriculoatrial Synchrony (RNRVAS) is a rare phenomenon seen in dual chamber pacemakers with atrial tracking.
Journal of the American Heart Association
FEBRUARY 13, 2024
BackgroundScreening for atrial fibrillation (AF) may reveal incidental arrhythmias of relevance. Among these were sinus node dysfunction in 14 patients (1.8%), AVB in 41 (5.2%), supraventricular tachycardia in 42 (5.3%), and ventricular tachycardia in 2 (0.3%). Journal of the American Heart Association, Ahead of Print.
DAIC
DECEMBER 14, 2023
Ioannis Katsoularis, image courtesy of Klas Sjöberg milla1cf Thu, 12/14/2023 - 09:23 December 14, 2023 — Individuals infected with COVID-19 are also at an increased risk of suffering from heart rhythm disturbances, such as atrial fibrillation.
Cardiomatics
APRIL 5, 2024
Interpreting the waves and detecting abnormalities: Typically, the heart conducts electricity in a pathway starting in the sinoatrial node (SA), our heart’s “natural pacemaker”, located in the wall of the right atrium. Sinus tachycardia – sinus rhythm above 100 bpm is a sinus tachycardia.
Circulation
NOVEMBER 10, 2023
Among 299 patients with CRT-pacemakers (BVP-111, LBBAP-188), VT/VF occurred in 8 patients in the BVP group vs. none in the LBBAP group (7.2% The occurrence of VT/VF was significantly lower with LBBAP compared with BVP (4.2% HR 0.46;95%CI 0.29-0.74;p<0.001). p<0.001). vs 0%;p<0.001). HR 0.46;95%CI 0.26-0.81;p=0.007).
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