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Search and discover over 2,500 ECG reports written by cardiologist and intensivist Dr George Nikolić OAM.
Atrial Pacemaker: First Degree AV Block
Report:Atrial pacemaker rhythm 90/min 4 AV interval 0.40 sec 2 Borderline intraventricular conduction delay (QRS 0.12 sec) 1 Inferior infarction, probably old 2 Nonspecific ST/T changes 1 Comment:The pacemaker is probably in the AAI mode; there is no
Retrograde Wenckebach and Reentry
Report:Pacemaker rhythm 92/min 1 Retrograde Wenckebach conduction 4 Wenckebach sequences terminated by reentry (echo) beats of pacemaker origin 4 Non-specific T wave changes 1 Comment:The pacemaker is in its rate-responding mode at 92/min, with Wenck
Overdrive of Atrial Tachycardia With Block
Report: Top: Atrial tachycardia 200/min 1 2:1 AV block 1 Pacemaker artefact 122/min 2 No capture 1 Second: Atrial pacing 250/min 3 Capture 0 Variable AV block 0.5 Third: Atrial pacing 80/min 0.5 1:1 conduction 0 Bottom: Sinus rhythm 68/min 1
Unusual Mechanism of Escape-Capture Bigeminy
Report: Sinus rhythm 0.5 SVEBs, blocked, in (atrial) trigeminy 2 AV sequential pacemaker, atrial-sensing (probably DDD) 0.5 Failure to sense SVEBs 4 Atrial-paced escape beats 0.5 Ventricular bigeminy (atrial trigeminy!) 2 Nonspecific T wave changes
Alternating Paced and Fusion Beats
Report: Slow atrial or junctional rhythm 38/min 2 Ventricular pacemaker rhythm 79/min 2 Superior electrode placement 2 Fusion in alternate beats 2 Presumptive RBBB 1 ST/T changes of uncertain significance 1 Comment: The narrower (0.12 sec) complexes are p
Rate Hysteresis
Report:Demand pacemaker rhythm 69/min 1 Posterior electrode placement 1 Rate hysteresis 3 Sinus rhythm 53/min 1 Sinus captures 1 AV dissociation with interference 1 Right bundle branch block 1 Possible old anteroseptal infarction 1 Comment:The fou
R-on-T Pacing
Report:Sinus rhythm 82/min 1 Ventricular pacemaker rhythm 58/min 1 Intermittent failure to sense 3 R-on-T pacing 3 Acute or recent inferior infarction 2 Comment:The first paced beat is paced just after the apex (or nadir, depending on the lead) of t
Atrial-Triggered Failed Pacemaker
Report:Sinus rhythm 94 - 96/min 1 First degree AV block (PR 0.28") 2 Left atrial abnormality (LAA) 1 Atrial-triggered ventricular pacemaker 2 Failure to pace 3 LVH with ST/T changes (incomplete LBBB) ± ischæmia 1 Comment:The pacing spikes bear const
Masquerading Bundle Branch Block
Report:Atrial fibrillation with ventricular response 80-120/min 1 Fixed-rate ventricular pacemaker rhythm 50/min 2 Fusion beat (third paced complex) 1 R-on-T pacing 1 Right bundle branch block 1 Left anterior hemiblock 1 Standard masquerading bundl
Fat QRS Complexes
Report: Sinus rhythm 1 First degree AV block (PR 0.24”) 1 Right bundle branch block (QRS 0.20”) 2 VEBs ? junctional premature beats (QRS 0.20”, one narrower 0.12”) 1 Demand pacemaker 2 LBBB morphology (QRS 0.20”) 0 Fusion beats (narrowest QRS 0.16”,