This week, Assoc Prof Mond discusses abnormalities commonly missed by physicians when reporting on ECGs, with a focus on reversed arm leads and how to avoid serious misdiagnosis.

Something rarely seen in Holter monitoring, the ventricular pentageminy with ventricular ectopics every 5th beat, and other curious rhythms!

Last week we proved not all bundle branch blocks are boring. Now we delve even deeper into mistaken rhythms, common misdiagnosis and those rarely talked about, including the crochetage sign

In the final part of this 2-part series, we explore even more exotic ectopy, including ventricular couplets, interpolation, unipolar bigemilets, trigemilets and more.

A controversial one this week: AFib with ventricular bigeminy. Or is it? Exploring trigeminy, ventricular parasystole, pseudo-ventricular parasystole and other possibilities, this one is sure to divide opinion.

In the final part of this 2-part series, Assoc Prof H Mond further explores the different forms of atrial ectopy including the atrial couplet, triplet, run & non-conducted types.

Assoc Prof Mond shares this case to delve into unusual and classical patterns of twisted leads in 12-lead ECG, including the double twist, and shares the tell-tale footprints of all.

A ‘bizarre’ case of dual chamber pacing with an 80ms AV delay, called us for a second opinion! With examples of a) Atrial pacing at 50 bpm and prolonged AV delay b) Wenckebach AV block; & Ventricular paced beat after 2 secs, we deep dive into the relationship between atrial and ventricular pacing.

This week MD Assoc Prof H Mond examines the similarities between the characteristics of artefact vs non-atrioventricular Wenckebach blocks and the importance of recognising footprints for correct diagnosis.