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Search and discover over 2,500 ECG reports written by cardiologist and intensivist Dr George Nikolić OAM.
Isorhythmic Dissociation of a VVI Pacemaker
Report:Sinus rhythm 70/min 1 Ventricular pacemaker rhythm 70/min 4 AV interval 0.36 sec 5 Comment:The sinus P waves are not very well shown in the frontal leads, but there’s no doubting them in the chest leads V1-3. The AV interval is long, but constan
Slowing Rate with Battery Depletion
Report:Atrial fibrillation 1 Pacemaker rhythm 60/min 2 Possible battery depletion 7 Comment:Battery depletion is usually programmed to manifest itself by slowing to a pre-set rate, in this case 60/min. This patient’s potential problem was in fact dia
Reciprocal Rhythm
Report: Pacemaker rhythm 1 Variable rate 1 First degree AV (0.2 - 0.4”) and VA (0.47 - 0.51”) block 1 Bigeminy due to reentry (echo) beats of pacemaker origin 6 Ventricular conduction delay (unspecified) 1 Comment: All the complexes shown - atrial
Implanted Cardioverter-Defibrillator
Report:Implanted cardioverter-defibrillator (ICD) readout 1 Ventricular tachycardia 152 – 162/min 4 Burst overdrive pacing 190-245/min 4 Sinus rhythm 95/min 1 Comment:The patient had numerous runs of VT which failed to activate the ICD because the ra
R-on-T Pacing
Report:Sinus tachycardia 106/min 1 Fixed-rate ventricular pacemaker rhythm 58/min 2 R-on-pacing 3 Fusion beats 3 Nonspecific ST/T changes 1 Comment:If the spikes go marching through another rhythm there is no way of knowing if they are atrial or vent
Tricuspid Atresia
Report: Atrial pacemaker rhythm 111/min (dual chamber pacemaker) 4 Left axis deviation (LAD) –60o 3 LVH with ST/T changes 3 Comment: A cyanosed child with LAD most likely has tricuspid atresia; in one large series LAD was present in 87% of those wit
Paced Bigeminy in PAT with Block
Report:Atrial tachycardia 146/min with block 2 100% paced atrial-sensing ventricular rhythm 97/min 3 Escape-capture bigeminy 5 Comment:This is a visually striking trace, with regular atrial tachycardia resulting in bigeminal paced ventricular rhythm. T
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
Pacemaker Rhythm and LBBB
Report: Electronic demand pacemaker rhythm 70/min 2 Atrial fibrillation 2 Left bundle branch block (last 3 beats) 6 Comment: If it were not for the rhythm strip, few would notice the transition from pacemaker to supraventricular rhythm at the end of th
Failing Pacemaker
Report: Sinus rhythm 1 Probable third degree AV block 1 AV dissociation 1 Ventricular escape beats 1 Primary T wave changes 1 Probable old anterior infarction 1 Pacemaker rhythm 72/min 1 Intermittent failure to pace 1 Probable lead displacement 2