Sudden manifestation of sinus arrest nine months after catheter ablation treatment for persistent atrial fibrillation
Publication date: Available online 18 March 2015 Source:Journal of Arrhythmia Author(s): Masateru Takigawa , Taishi Kuwahara , Kenji Okubo , Atsushi Takahashi A 39-year-old man with a seemingly non-remodeled, small heart suffered persistent atrial fibrillation (AF). Extensive isolation of the pulmonary vein, superior vena cava, and posterior left atrium, in conjunction with right atrium focal ablation, was performed to ablate multiple AF foci during two catheter ablation sessions. Sinus arrest occurred suddenly during follow-up, despite the absence of recurrent AF, ultimately necessitating pacemaker implantation. T...
Source: Journal of Arrhythmia - March 18, 2015 Category: Cardiology Source Type: research
Seasonal, weekly, and circadian distribution of ventricular fibrillation in patients with J-wave syndrome from the J-PREVENT registry
Conclusions ERS and BrS patients show similar nighttime increases in the occurrence of VF, but different seasonal and weekly distributions, suggesting a pathophysiological difference between the two syndromes. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - March 17, 2015 Category: Cardiology Source Type: research
Right coronary artery perforation by an active-fixation atrial pacing lead resulting in life-threatening tamponade
We report the first case of perforation of the right coronary artery related to the implantation of a screw-in atrial pacing lead, presenting as life-threatening cardiac tamponade. We report the case of a 72-year-old woman with complete atrioventricular block and dyspnea on exertion. A permanent pacemaker was implanted with bipolar Medtronic active-fixation leads positioned in the right atrial appendage and at the right ventricular basal septum without any difficulty. Approximately 3.5h after the procedure, the patient complained of nausea, and the systolic blood pressure decreased to less than 60mmHg. Echocardiography rev...
Source: Journal of Arrhythmia - March 17, 2015 Category: Cardiology Source Type: research
Coexistence of persistent left superior vena cava with common inferior pulmonary vein in a patient with atrial fibrillation
Publication date: Available online 11 February 2015 Source:Journal of Arrhythmia Author(s): Kunihiko Kiuchi , Katsunori Okajima , Yu Takahashi , Kiminobu Yokoi , Akira Shimane Coexistence of a persistent left superior vena cava (PLSVC) with a common inferior pulmonary vein (CIPV) is very rare. The electrical assessment of those thoracic veins was performed during the atrial fibrillation ablation. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - March 14, 2015 Category: Cardiology Source Type: research
The effectiveness of cardiac resynchronization therapy for patients with New York Heart Association class IV non-ambulatory heart failure
Conclusions CRT can be safely used in patients with NAHF and can improve long-term patient outcomes, especially in treatment responders. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - March 14, 2015 Category: Cardiology Source Type: research
Inappropriate mode switching clarified by using a chest radiograph
Publication date: Available online 14 February 2015 Source:Journal of Arrhythmia Author(s): Brian Marino , Abhishek Jaiswal , Seth Goldbarg An 80-year-old woman with a history of paroxysmal atrial fibrillation and atrioventricular node disease status post-dual chamber pacemaker placement was noted to have abnormal pacing episodes during a percutaneous coronary intervention. Pacemaker interrogation revealed a high number of short duration mode switching episodes. Representative electrograms demonstrated high frequency nonphysiologic recordings predominantly in the atrial lead. Intrinsic pacemaker malfunction was excl...
Source: Journal of Arrhythmia - March 14, 2015 Category: Cardiology Source Type: research
Usefulness of a wearable cardioverter defibrillator combined with catheter ablation for ventricular tachyarrhythmia storms after a myocardial infarction: A case report
We report a case of a 60-year-old man with recurrent poly- and monomorphic ventricular tachycardia related to a recent myocardial infarction. Due to drug-refractory ventricular tachycardia despite complete revascularization, he underwent catheter ablation. Afterwards, he was fitted with a wearable cardioverter defibrillator. Three months later, no ventricular tachycardia had been recorded and an electrophysiologic study failed to induce an episode. Thus, wearable cardioverter defibrillators are useful bridging devices pending a final decision to implant a cardioverter defibrillator. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - March 14, 2015 Category: Cardiology Source Type: research
Electrophysiological and anatomical background of the fusion configuration of diastolic and presystolic Purkinje potentials in patients with verapamil-sensitive idiopathic left ventricular tachycardia
Conclusion FTs may at least partly contribute to the formation of the Pd potential, and thus form a critical part of the reentry circuit of ILVT. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - March 14, 2015 Category: Cardiology Source Type: research
Left atrial thrombus formation and resolution during dabigatran therapy: A Japanese Heart Rhythm Society report
Conclusions LA thrombus developed in 4% of patients with AF receiving Dabi. Older patients with a higher CHADS2 score receiving a lower Dabi dosage were more likely to develop LA thrombus, which was resolved with a prolonged or increased dosage. A higher Dabi dosage may be more beneficial before ECV but prospective randomized studies would be needed to confirm these results. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - March 14, 2015 Category: Cardiology Source Type: research
Prophylactic catheter ablation of ventricular tachycardia before cardioverter-defibrillator implantation in patients with non-ischemic cardiomyopathy: Clinical outcomes after a single endocardial ablation
Conclusion Single endocardial PCA can decrease ES occurrence in NICM patients. However, high rates of VT recurrence and low success rates are issues to be resolved; therefore, the efficacy of single endocardial PCA is currently limited. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - February 5, 2015 Category: Cardiology Source Type: research
Increased defibrillator therapies during influenza season in patients without influenza vaccines
Conclusion A trend toward more ICD therapies during influenza season was observed in patients who did not receive the influenza vaccine compared to those who did. The association was stronger in patients who received appropriate ICD shocks and in patients with left ventricular systolic dysfunction. Further work to confirm these findings is recommended. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - February 4, 2015 Category: Cardiology Source Type: research
Ventricular bigeminy in acute organophorous poisoning – A rare ECG finding
Publication date: Available online 2 February 2015 Source:Journal of Arrhythmia Author(s): Bharati Taksande , Bhawik Dhirawani India being a land of farmer, the pesticides are freely and easily available and therefore organophosphorous poisoning is one of the major health issues. Suicidal poisoning is more common than accidental poisoning. Cardiac manifestations of organophosphorous poisoning are well known. It results in various electrocardiographic changes from sinus tachycardia to ST elevation. We hereby present a rare ECG finding of ventricular bigeminy in a case of acute organophosphorous poisoning. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - February 3, 2015 Category: Cardiology Source Type: research
Prevalence and associated factors of early repolarization pattern in healthy young northeastern Thai men: A correlation study with Brugada electrocardiography
Conclusions The ERP rate in young, healthy men from northeastern Thailand was 10.3%. A higher Sokolow–Lyon index was the only independent factor associated with ERP. Subjects with ERP should be examined with high intercostal leads to uncover Brugada ECG. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - January 31, 2015 Category: Cardiology Source Type: research
Right atrial tachycardia with 2:1 intra-atrial conduction
Publication date: February 2015 Source:Journal of Arrhythmia, Volume 31, Issue 1 Author(s): Masayoshi Kofune , Ichiro Watanabe , Yasuo Okumura In a case of atrial tachycardia (AT) originating from the inferolateral right atrium, cycle length (CL) alternans was observed. Conduction at the longer CL was to the high right atrium (HRA), His bundle electrogram region (HBE), and coronary sinus (CS). Conduction at the shorter CL was to the HRA, with that to the HBE and CS blocked. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - January 31, 2015 Category: Cardiology Source Type: research
A young patient with atypical type-B Wolff–Parkinson–White syndrome accompanied by left ventricular dysfunction
Publication date: February 2015 Source:Journal of Arrhythmia, Volume 31, Issue 1 Author(s): Takahiro Takeuchi , Takeshi Tomita , Hiroki Kasai , Daisuke Kashiwagi , Koji Yoshie , Tomonori Yaguchi , Yasutaka Oguchi , Ayako Kozuka , Milan Gautam , Hirohiko Motoki , Ayako Okada , Yuji Shiba , Kazunori Aizawa , Atsushi Izawa , Yusuke Miyashita , Jun Koyama , Minoru Hongo , Uichi Ikeda A 15-year-old asymptomatic male patient presented with an electrocardiographic abnormality and left ventricular (LV) dysfunction (left ventricle ejection fraction of 40%) in a physical examination performed 2 years previously...
Source: Journal of Arrhythmia - January 31, 2015 Category: Cardiology Source Type: research
