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Search and discover over 2,500 ECG reports written by cardiologist and intensivist Dr George Nikolić OAM.
Sinus Captures in Nodal Rhythm
Report: Junctional rhythm 42/min Sinus capture beats AV dissociation with interference Concealed conduction Comment: The sinus captures are only possible after sufficient distance from the preceding QRS complex has rendered the AV node amenable to con
Xylocaine Tachycardia
Report:Sinus tachycardia 114/min (middle strip) SVEBs Blocked, in bigeminy (top) Aberrantly conducted, in bigeminy (bottom) Comment: Xylocaine has some atropinic effect and may have facilitated AV conduction, impairing at the same time the intraventr
AIVR & Retrograde Conduction
Report: Sinus arrhythmia VEB (second complex in the top strip) Atrial (?junctional) escape complex (9th in the top strip) Accelerated idioventricular rhythm 86-89/min Retrograde conduction Fusion beats Comment: Typically, the retrograde 1:1 conducti
Aberrant Reentry Beats of Junctional Origin
Report: Sinus bradycardia 36/min (middle & end of bottom strip) Sinus arrest, possibly exit block Junctional escape rhythm Reentry (echo) beats of junctional origin Retrograde first degree VA block 0.26â Antegrade first degree AV block 0.26â Lef
A Far-Reaching Interpolation
Report:Sinus rhythm. VEBs, frequent, two interpolated. Comment:The concealed retrograde conduction governing the PR interval after an intercalated VEB rarely affects more than one cycle. In the top and middle strips, the first VEB is intercalated and
Möbitz 2 Block
Report: Sinus rhythm Second degree AV block, Möbitz 2 Right bundle branch block Comment: The conducted P waves show no increment in their PR intervals prior to the blocked one - a clear-cut case of Möbitz 2 block. Typically, the QRS itself is prolong
Sino-Atrial Exit Block
Report:Sinus rhythm 74/min 3:2 sino-atrial exit block Bigeminy Negative U waves in lead 1 Comment:The same comments can be made here as for the preceding Case 93. It, too, could have Möbitz 2 mechanism. Below (Fig 94a) is another trace, with long cy
Joggerâs Wenckebach
Report:Sinus rhythm Wenckebach (Möbitz 1) second degree AV block, atypical Periods of 2:1 conduction (block) Comment:The patient may well have a mild form congenital heart block, but the progressive angina should call for evaluation of his coronary re
Sinoatrial Block: CVA
Report:Sinus rhythm Sinus pauses - probable Wenckebach exit block Junctional escape beats and rhythm Atrial fusion beats SVEB. Comment:The sinus cycles tend to shorten before the pause, a characteristic of Möbitz 1 (Wenckebach) exit block. There is
Three Causes of Pauses & Many Diagnoses
Report:Sinus rhythm 88 - 92/min Left atrial abnormality (LAA) P wave 0.12â SVEB, non-conducted VEBs, late-diastolic Ventricular fusion beat (third last complex in the bottom strip) Junctional escape (top strip) and premature beat (bottom strip), R