title: Idiopathic ventricular tachycardia originating from the posteroseptal mitral annulus: a case report.
abstract: Idiopathic VT originating from posteroseptal mitral annulus. We describe a 71-year-old man with a ventricular tachycardia (VT) originating from the mitral annulus. A sustained VT was induced by exercise or an isoproterenol administration, but not by pacing. Frequent premature ventricular contractions(PVCs) with the same QRS as the VT were transiently suppressed by an adenosine triphosphate injection,suggesting that it was due to cyclic-AMP mediated triggered activity. The PVCs and VT were all abolished by radiofrequency catheter ablation guided by the earliest activation and a perfect pace map, which was located at the posteroseptal mitral annulus. The patient has been free from any symptoms for 2 years.(J Cardiovasc Electrophysiol, Vol. 17, pp. 1375-1377, December 2006)
authors: Awakigahara Hopsital, Miyazaki, Japan.
authors: Keichi
authors: K
authors: Ashikaga
authors: Takeshi
authors: T
authors: Tsuchiya
authors: Hideki
authors: H
authors: Tashiro
authors: Kunihiko
authors: K
authors: Yamamoto
mesh_terms: D000255:Adenosine Triphosphate / Q000008:administration & dosage; D000368:Aged; D002316:Cardiotonic Agents / Q000008:administration & dosage; D017115:Catheter Ablation; D000242:Cyclic AMP / Q000378:metabolism; D015444:Exercise; D006801:Humans; D007545:Isoproterenol / Q000008:administration & dosage; D008297:Male; D008943:Mitral Valve / Q000473:pathology / Q000503:physiopathology*; D017180:Tachycardia, Ventricular / Q000378:metabolism / Q000628:therapy*; D018879:Ventricular Premature Complexes / Q000378:metabolism / Q000628:therapy*
chemical_list: D002316:Cardiotonic Agents; D000255:Adenosine Triphosphate; D000242:Cyclic AMP; D007545:Isoproterenol