Exercise and arrhythmic risk in TMEM43 p.S358L arrhythmogenic right ventricular cardiomyopathy.

Background: High-level exercise has been associated with a malignant phenotype in desmosomal and genotype-negative forms of arrhythmogenic right ventricular cardiomyopathy (ARVC). This is the first study to examine this issue with ARVC secondary to the TMEM43 p.S358L mutation.

Electrocardiogram interpretation by Canadian general paediatricians: Examining practice, accuracy and confidence.

Background: Paediatric electrocardiograms (ECGs) are ordered and interpreted by general paediatricians; however, no previous studies have evaluated the accuracy of their ECG interpretations.

Objective: To determine general paediatricians' practice and opinions regarding ECG use, accuracy of their interpretation of paediatric ECGs, and the relationship between accuracy and self-perceived confidence.

Methods: In the present cross-sectional study, Canadian general paediatricians were asked to complete a questionnaire and interpret 18 paediatric ECGs.

Commotio cordis and ventricular pseudoaneurysm.

A case of an eight-year-old boy who experienced commotio cordis with the development of myocardial infarction and a ventricular pseudoaneurysm is described. Progressive enlargement of the aneurysm resulted in distortion and compression of the overlying coronary arteries, causing myocardial ischemia.