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J wave syndromes are a collection of clinical entities characterized by accentuation of the Ito-mediated J wave, early repolarization and ST segment elevation. Although the risks of sudden cardiac death of these syndromes differ with respect to the magnitude and location of abnormal J wave manifestation and ST segment elevation, they share with a common ionic and cellular mechanism and their responses...
The J wave, a deflection that follows the QRS complex of the surface electrocardiogram, is usually partially buried in the R wave in humans, appearing as a J-point elevation. An early repolarization (ER) pattern characterized by J-point elevation, slurring of the terminal part of the QRS, and ST-segment elevation has long been recognized and considered to be totally benign. Recent studies have presented...
The J wave, also referred to as an Osborn wave, is a deflection immediately following the QRS complex of the surface ECG. When partially buried in the R wave, the J wave appears as J-point elevation or ST-segment elevation. Several lines of evidence have suggested that arrhythmias associated with an early repolarization pattern in the inferior or mid to lateral precordial leads, Brugada syndrome,...
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