Concealed conduction of premature ventricular complexes resulting in AV nodal block
Publication date: Available online 12 May 2017 Source:Journal of Arrhythmia Author(s): Ying Zi Oh, Vern Hsen Tan, Kelvin CK Wong (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 12, 2017 Category: Cardiology Source Type: research
Refractory ventricular tachycardia caused by inflow cannula mechanical injury in a patient with left ventricular assist device: Catheter ablation and pathological findings
We report on a case of a successfully ablated mechanical VT. After VT recurrence, heart transplantation took place. Pathologic observations were consistent with direct tissue injury and inflammation, eventually contributing to persisting arrhythmias. Radiofrequency catheter ablation can be a safe and effective option to treat arrhythmias caused by inflow cannula interference in the short term, although a high recurrence rate is expected. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 11, 2017 Category: Cardiology Source Type: research
Use of implantable and external loop recorders in syncope with unknown causes
Publication date: Available online 11 May 2017 Source:Journal of Arrhythmia Author(s): Kaoru Tanno The gold standard for diagnosing syncope is to elucidate the symptom-electrocardiogram (ECG) correlation. The ECG recordings during syncope allow physicians to either confirm or exclude an arrhythmia as the mechanism of syncope. Many studies have investigated the use of internal loop recorder (ILR), while few studies have used external loop recorder (ELR) for patients with unexplained syncope. The aim of this review is to clarify the clinical usefulness of ILR and ELR in the diagnosis and management of patients with unexpl...
Source: Journal of Arrhythmia - May 11, 2017 Category: Cardiology Source Type: research
Life-threatening arrhythmias leading to syncope in patients with vasospastic angina
Publication date: Available online 10 May 2017 Source:Journal of Arrhythmia Author(s): Mitsuhiro Nishizaki The coronary artery diseases (CAD) that can lead to the occurrence of a syncopal attack include acute coronary syndrome, vasospastic angina, effort angina, and prior myocardial infarction. The possible mechanisms considered to lead to syncope in patients with CAD are pump failure, tachyarrhythmia, bradycardia, and vagal stimulation. Coronary artery spasm, in particular, is occasionally observed in patients with unexplained syncope in Japan. Life-threatening arrhythmias are among the most serious complications of an...
Source: Journal of Arrhythmia - May 10, 2017 Category: Cardiology Source Type: research
Clinical benefits of deep sedation with a supraglottic airway while monitoring the bispectral index during catheter ablation of atrial fibrillation
Conclusions These results may demonstrate the clinical benefits of deep sedation with SGAs while monitoring the BIS index without any hypoxia during PVAI in patients with AF. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 8, 2017 Category: Cardiology Source Type: research
Syncope and paroxysmal atrioventricular block
Publication date: Available online 8 May 2017 Source:Journal of Arrhythmia Author(s): Milena Aste, Michele Brignole Current literature reveals three types of paroxysmal atrioventricular block (AVB) that can cause syncope: Intrinsic paroxysmal atrioventricular block is due to an intrinsic disease of the AV conduction system; this type of “cardiac syncope” is also called Stokes-Adams attack; Extrinsic vagal paroxysmal atrioventricular block is linked to the effect of the parasympathetic nervous system on cardiac conduction and is one of the mechanisms involved in “reflex syncope.” Extrinsic idiopathic paroxysmal ...
Source: Journal of Arrhythmia - May 8, 2017 Category: Cardiology Source Type: research
Criteria for short QT interval based on a new QT-heart rate adjustment formula
Conclusions Based on the new spline formula, a short QTc is defined at the first percentile, and is less than 380ms in both men and women. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 6, 2017 Category: Cardiology Source Type: research
Subacute pneumothorax contralateral to the venous access site associated with atrial lead perforation in a patient who was receiving corticosteroid therapy
We report a rare case of subacute contralateral pneumothorax due to a screw-in atrial lead perforation that occurred after dual-chamber pacemaker implantation in a patient who was receiving steroid therapy. The pneumothorax disappeared, and no recurrence was observed during follow-up with close observation alone. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 5, 2017 Category: Cardiology Source Type: research
Impact of baseline renal function on all-cause mortality in patients who underwent cardiac resynchronization therapy: A systematic review and meta-analysis
Conclusion Baseline renal dysfunction has an adverse effect on-all cause mortality in patients who underwent CRT. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - May 1, 2017 Category: Cardiology Source Type: research
Simple and effective solution for diaphragm pacing by that uses the transvenous femoral approach in a patient treated with cardiac resynchronization-defibrillator therapy: The wrapping method
We present the case of a 58-year-old male patient who had diaphragm pacing after CRT with defibrillator implantation. The complication was resolved by using the transvenous femoral approach with the wrapping method. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - April 29, 2017 Category: Cardiology Source Type: research
Adaptive cardiac resynchronization therapy for dilated cardiomyopathy with functional mitral regurgitation
We report the case of a man in his 60s who had dilated cardiomyopathy with severe functional mitral regurgitation. Four years after a cardiac resynchronization therapy (CRT) device with an implantable cardioverter defibrillator was implanted, this device was replaced with an adaptive CRT device because of battery consumption. Seven months after replacement of this device, the left ventricular pacing to right ventricular activation and the atrioventricular delay from automatic adjustments contributed to less functional mitral regurgitation. The findings from our case suggest that optimal CRT, by measuring intracardiac condu...
Source: Journal of Arrhythmia - April 29, 2017 Category: Cardiology Source Type: research
Elongated ascending aorta predicts a short distance between his-bundle potential recording site and coronary sinus ostium
Conclusions Small TOK was associated with longer Ao, larger LVDs, and Ao unfolding. Of these, Ao unfolding was associated with smaller TOK in patients with AVNRT. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - April 27, 2017 Category: Cardiology Source Type: research
Vagal response in cryoballoon ablation of atrial fibrillation and autonomic nervous system: Utility of epicardial adipose tissue location
Conclusions Changes in HRV parameters following ablation were similarly observed in both the groups. EAT volume on the LA-PV junction is helpful for interpretation of VR occurrence and ANS modulation. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - April 24, 2017 Category: Cardiology Source Type: research
Cardiac resynchronization therapy in ischemic and non-ischemic cardiomyopathy
Publication date: Available online 21 April 2017 Source:Journal of Arrhythmia Author(s): Hisashi Yokoshiki, Hirofumi Mitsuyama, Masaya Watanabe, Takeshi Mitsuhashi, Akihiko Shimizu Cardiac resynchronization therapy (CRT) using a biventricular pacing system has been an effective therapeutic strategy in patients with symptomatic heart failure with a reduced left ventricular ejection fraction (LVEF) of 35% or less and a QRS duration of 130ms or more. The etiology of heart failure can be classified as either ischemic or non-ischemic cardiomyopathy. Ischemic etiology of patients receiving CRT is prevalent predominantly i...
Source: Journal of Arrhythmia - April 22, 2017 Category: Cardiology Source Type: research
Initial experience with the subcutaneous implantable cardioverter-defibrillator in a single Japanese center
Conclusions S-ICD implantation appears to provide a viable alternative to transvenous ICD implantation for some Japanese patients. However, we should perform careful follow-up of patients to eliminate inappropriate therapy. (Source: Journal of Arrhythmia)
Source: Journal of Arrhythmia - March 31, 2017 Category: Cardiology Source Type: research
