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Search and discover over 2,500 ECG reports written by cardiologist and intensivist Dr George Nikolić OAM.
Pacemaker-Ventricular Wenckebach
Report: Sinus rhythm 1 Third degree AV block 3 Pacemaker rhythm 2 Möbitz 1 (Wenckebach) pacemaker-ventricular block 4 Comment: There is an allorhythmic succession of 2:1 and 3:2 sequences. The latter show well-marked prolongation of spike-to-QRS inter
Rate Hysteresis
Report:Sinus rhythm 1 VEBs, multiform 2 Demand ventricular pacemaker 3 Rate hysteresis 3 Fusion beat (top panel) 1 Comment:The VVI pacemaker takes over after the VEBs; the long cycle it terminates corresponds to a rate 50/min, while the subsequent t
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
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
Agonal Rhythm: Pacemaker Failure?
Report: Agonal (chaotic) rhythm 4 Pacemaker spikes 1 Slow rate 3 Failure to pace 2 Comment: The pacemaker spikes may be slow due to inhibition by the native agonal complexes or because of the battery failure. A 12-lead ECG taken 7 months previously sh
VEB and DDD Pacemaker
Report:Sinus rhythm 73/min 1 VEB 3 Atrial-sensing ventricular pacemaker 4 Atrial-paced beat 2 Comment:Universal (DDD) pacemakers can both sense and pace the atria. The pause created by the VEB is terminated by an atrial-paced P wave and ventricular-pa
Spike Decay Masking the QRS
Report:Ventricular pacemaker rhythm 65/min 1 Possible battery depletion 2 Intermittent retrograde conduction 4 Sinus rhythm 75/min 1 Probable third degree AV block 2 Comment:The faster sinus rhythm is almost certainly subject to 3o AV block, but the
Atrial Sensing & Undersensing
Report:Atrial-sensing & pacing ventricular pacemaker rhythm 60/min 3 Atrial premature beats, possibly sinus 3 Blocked or sensed with first degree AV block or not sensed 3 Atrial bigeminy 1 Comment:All the QRS complexes are paced. The morphology of t
Pacemaker-Ventricular 4:3 Block
Report: Sinus rhythm 1 Atrial-sensing ventricular pacemaker 3 Trigeminy due to 4:3 pacemaker-ventricular block 6 Comment:The paced beats show the expected RV apical pacing morphology of LBBB with LAD. The reason for the intermittent failure to pace is
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