Characterization of J wave in a patient with idiopathic ventricular fibrillation
2006; Elsevier BV; Volume: 3; Issue: 9 Linguagem: Inglês
10.1016/j.hrthm.2006.05.016
ISSN1556-3871
AutoresTetsuji Shinohara, Naohiko Takahashi, Tetsunori Saikawa, Hironobu Yoshimatsu,
Tópico(s)Cardiac Arrhythmias and Treatments
ResumoIdiopathic ventricular fibrillation (VF) is observed in patients without obvious structural heart disease, including Brugada syndrome. 1 Wever E.F. Robles de Medina E.O. Sudden death in patients without structural heart disease. J Am Coll Cardiol. 2004; 43: 1137-1144 Abstract Full Text Full Text PDF PubMed Scopus (120) Google Scholar Terminal QRS notching, also known as the J wave, reportedly is related to the development of idiopathic VF. 2 Aizawa Y. Tamura M. Chinushi M. Naitoh N. Uchiyama H. Kusano Y. Hosono H. Shibata A. Idiopathic ventricular fibrillation and bradycardia-dependent intraventricular block. Am Heart J. 1993; 126: 1473-1474 Abstract Full Text PDF PubMed Scopus (144) Google Scholar , 3 Garg A. Finneran W. Feld G.K. Familial sudden cardiac death associated with a terminal QRS abnormality on surface 12-lead electrocardiogram in the index case. J Cardiovasc Electrophysiol. 1998; 9: 642-647 Crossref PubMed Scopus (76) Google Scholar An experimental study revealed that the presence of a transient outward current (Ito)-mediated prominent action potential notch in epicardium, but not endocardium, provides a voltage gradient, which manifests as J waves. 4 Yan G.X. Antzelevitch C. Cellular basis for the electrocardiographic J wave. Circulation. 1996; 93: 372-379 Crossref PubMed Scopus (703) Google Scholar Here, we present a case of idiopathic VF that demonstrates J waves. The response of J waves to several agents and pacing is evaluated.
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