Anthony S Tang

..Members of the Canadian Heart Rhythm Society participated in the discussion of these recommendations in open forum meetings and by electronic communication...

..The purpose of the present analysis was to determine if pacemaker-dependent patients have an increased benefit from physiological pacing compared with non-pacemaker-dependent patients...

..Heart failure is a major public health problem. Many heart failure patients have electrical and mechanical ventricular dyssynchrony, which are risk factors for death in heart failure patients...

..Therefore, this study's objective was to assess whether greater septal R-MM pattern predicts response to CRT...

....

..Magnetic catheter stability during RF application likely contributed to the success of this procedure and may have minimized the risk of AV block...

..Some studies have shown that the global extent of LV scar is important, whereas others found the size of the septal or lateral wall scar to be key...

..The resultant ICD shock dislodged the patient from the electrical source, thus preventing injury or electrocution...

....

..The significant morbidity and mortality found after CRT highlight the severity of the underlying cardiac pathology and concurrent illnesses...

....

..Numerous reports have demonstrated an association between autonomic tone and atrial fibrillation (AF). Pulmonary vein (PV) denervation during catheter ablation of AF has been shown to significantly reduce recurrence of AF...

..We hypothesized that idiopathic atrial fibrillation has a genetic basis and that tissue-specific mutations in GJA5, the gene encoding connexin 40, may predispose the atria to fibrillation...

....

..The three-dimensional contributions to human atrial activation in sinus rhythm have not been specifically characterized. We evaluated the sequence of endocardial and epicardial activation and voltage of the atria during normal sinus rhythm...

..We compared and contrasted the use of implantable cardioverter defibrillator therapy in Canada and the United States among adults who survived a cardiac arrest...

..The possible interaction between acupuncture and ICD therapy has not been previously investigated. A case of acupuncture triggering inappropriate shocks from the ICD is reported...

..Oxidative metabolism of the interventricular septum increases relative to the lateral wall, which suggests successful resynchronization...

..The QOL studies within the Canadian Trial of Physiologic Pacing were performed to assess whether QOL differences exist in patients randomized to these 2 pacing modes...

..Heart failure remains a major cause of morbidity and mortality despite advances in pharmacological treatment. Recently, multisite biventricular pacing has been used in the treatment of patients with heart failure...

..However, the occurrence of atrial fibrillation was significantly less frequent with physiological pacemakers. To assess a potential delayed benefit of physiological pacing, follow-up of patients in this study was extended to 6 years...

..Furthermore, these smaller leads would obviously allow deeper advancement into the LA veins with the potential advantages of greater interatrial synchronization and lead stability and lesser far-field R wave sensing...

..This provides evidence for reverse atrial electrical remodelling and its association with the maintenance of sinus rhythm...

..The different patterns possible for the phenomenon and the necessary conditions for their occurrence are elucidated...

..The purpose of the present study was to determine how both atria are coupled electrically...

..Accordingly, we compared the characteristics of the successful ablation of atrioventricular reentry tachycardia (AVNRT) using RMN with a matched population ablated using a conventional (CON) manual approach...

..The role of AMP-activated protein kinase in the regulation of the glucose metabolic pathway in muscle suggests that genetic defects in PRKAG2 may induce a previously undescribed cardiac glycogenosis syndrome...

..The authors report a case of transient left ventricular apical ballooning after a prolonged electrophysiology procedure. Interventional electrophysiologists should be aware of this syndrome as a potential complication...

..CONCLUSION: Although male patients accounted for the great majority (85%) of all ICD recipients, there was no evidence of influence of gender on the likelihood of receiving an appropriate or inappropriate shock...

..The estimated mortality of 1.36% to 2.05% (95% confidence interval 0.29% to 10.8%) is less than previously reported from most case series...

..We describe a patient whose previously fixed pulmonary hypertension improved to the point that she was once again considered eligible for cardiac transplantation...