The shock of Ping-Pong in the His-Purkinje system combined with severe digitalis toxicity is the discussion of this rare trace discovered at CardioScan. Medical Director Medicine Dr Harry Mond shares what it reveals and the talks about the changing treatment regimes for such a case.

Dr Harry Mond explores the various arrhythmic events that can interrupt and terminate Wenckebach AV sequences including non-conducted atrial ectopics.

Not all ECG recordings are straightforward, as illustrated by this "bizarre" ECG. In this latest edition in our clinical case studies series, our Medical Director Dr Harry Mond explains how he assessed an ECG he was asked to look at, and how eliminated incorrect solutions to the symptoms being presented.

In the last of the Wenckebach case study series, Dr Harry Mond explores several ECGs with fascicular Wenckebach AV sequences with a reminder to always question the tracings!

We explore the many variations of Wenckebach AV block with a pivotal focus on the atypical, typical and absolute occurrences. We also define the three features needed in order to make a correct diagnosis.

Dr Harry Mond shows us an example of the all too common busy ECG and explores how to report on them successfully.

Dr Harry Mond explores another form of ECG interference often referred to as 'subtle artefact' which can mimic cardiac arrhythmias and sometimes lead to serious misdiagnoses and inappropriate treatments.

Group beating always provide fascinating ECGs! This week, we take a look at several different combinations of ectopy sequences including ventricular and atrial trigemilets, ventricular bigemilets and more.

An ECG artefact is an inscription on an ECG tracing that doesn't originate from a cardiac source. Dr Harry Mond teaches us how to recognise artefact on an ECG and what causes the different types of interference to prevent ECG misdiagnosis.