J wave patterns--morphology, prevalence and nomenclature.
The recent resurgence of interest in early repolarization has demonstrated a variation in the definition of the term and a consequent variation in the prevalence of the pattern in different studies. This can vary from 35% in males and 21.5% in females if ST elevation is not considered part of the definition, to 3.3% and 0.5% in females with the inclusion of ST elevation. In contrast, the prevalence of the Brugada Syndrome is in the order of 0.1%-0.2% in Japan for example and has been found to be significantly lower in Denmark. Standardisation of measurement definitions, particularly for early repolarisation, is required.
Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK. Electronic address: peter.w.macfarlane@glasgow.ac.uk.
Peter W
PW
Macfarlane
Elaine N
EN
Clark
Jacob S
JS
Heng
D001145:Arrhythmias, Cardiac / Q000145:classification* / Q000175:diagnosis* / Q000453:epidemiology; D004562:Electrocardiography / Q000145:classification* / Q000379:methods*; D006801:Humans; D015995:Prevalence; D009626:Terminology as Topic
Early repolarization; J wave syndromes