Atrial Fibrillation Bradycardia Pacemaker 
Open Heart
JULY 17, 2023
Bradyarrhythmia and atrial fibrillation (AF) incidence are reported in up to 16% and 13%, respectively. Objective We conducted a systematic review evaluating AF burden and bradycardia requiring permanent pacemaker (PPM) implantation and report any predictive risk factors identified.
Dr. Smith's ECG Blog
JULY 5, 2018
PMH: Known paroxysmal Atrial fib. He is usually is in sinus rhythm as far as he knows, but he cannot subjectively feel atrial fibrillation, so he is never completely certain when he is in sinus or atrial fib. Here is his ECG: Atrial Fib with a Ventricular Response of about 66. He immediately completely recovered.
Journal of Cardiovascular Electrophysiology
APRIL 10, 2025
ABSTRACT Background Despite leadless pacemakers (LPMs) showing promise, real-world data comparing them to transvenous pacemakers (TV-VVI) are insufficient and often contradictory, especially in patients without major comorbidities like heart failure. Objectives Comparing LPMs with TV-VVIs in real-world patients without HF.
Dr. Smith's ECG Blog
MARCH 15, 2023
Her Apple Watch suddenly told her that she is in atrial fibrillation. Patients with healthy AV nodes who are not on AV nodal blockers and who are not hyperkalemic should have a rapid ventricular response if they have paroxysmal Atrial fibrillation. Baseline bradycardia in endurance athletes limits the use of ß-blockers.
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 bradycardia – sinus rhythm below 60 bpm is a sinus bradycardia.
Journal of Cardiovascular Electrophysiology
MARCH 3, 2024
Complete left bundle branch block (CLBBB)-like QRS morphology of right ventricular pacing at pacemaker implantation satisfying the American Heart Association/American College of Cardiology Foundation/Heart Rhythm Society criteria of CLBBB was associated with development of pacing induced cardiomyopathy.
Dr. Smith's ECG Blog
JANUARY 22, 2020
She previously had Atrial fibrillation with LBBB. This shows atrial fibrillation. The fact that the response is regular proves that the atrial fibrillation is NOT conducting. When atrial fib conducts, the ventricular rate must always be irregular. She had a permanent pacemaker implanted.
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