A case report of an unusual cause of increased impedance after generator exchange.

Background: Remote monitoring has emerged as a complement to in-person care for patient with cardiac implantable electronic devices (CIEDs). It provides the care team with information about device integrity, programming issues, or other medical data (i.e.

Dofetilide-Associated QT Prolongation: Total Body Weight Versus Adjusted or Ideal Body Weight for Dosing.

Dofetilide is an antiarrhythmic drug with dosing based on the Cockcroft-Gault formula using total body weight (TBW). We investigated the impact of calculating dofetilide dose using adjusted body weight (ABW) or ideal body weight (IBW) on subsequent dose reduction or discontinuation. We conducted a retrospective review of 265 patients admitted to an academic medical center for initiation of dofetilide using TBW.

Clinical and echocardiographic response of apical vs nonapical right ventricular lead position in CRT: A meta-analysis.

Background: Traditionally the right ventricular (RV) pacing lead is placed in the RV apex in cardiac resynchronization therapy (CRT). It is not clear whether nonapical placement of the RV lead is associated with a better response to CRT. We aimed to perform a meta-analysis of all randomized controlled trials (RCTs) that compared apical and nonapical RV lead placement in CRT.

Pseudo cryomapping for ablation of atrioventricular nodal reentry tachycardia: A single center North American experience.

Background: Most literature for cryoablation of atrioventricular nodal reentry tachycardia (AVNRT) is based on -30 degree celsius cryomapping with 4 & 6 mm distal electrode catheters. The cryomapping mode is not available on the 6 mm cryocatheter in the United States. We describe a technique for 'pseudo' mapping at -80° using a 6 mm cryocatheter and report on short and long term outcomes.

The role of empiric superior vena cava isolation in atrial fibrillation: a systematic review and meta-analysis of randomized controlled trials.

Background: It is not clear whether additional empiric superior vena cava isolation (SVCI) to pulmonary vein isolation (PVI) results in low recurrences of atrial fibrillation. We aimed to perform a systematic review and meta-analysis of all randomized controlled trials (RCTs) that evaluated role of empiric SVCI in atrial fibrillation ablation.

Methods: We searched PubMed, EMBASE, Cochrane, Scopus, and relevant references for RCTs (inception April 15, 2016 without language restrictions) and performed meta-analysis using random effects model.

Brugada Syndrome Presenting as Polymorphic Ventricular Tachycardia-Ventricular Fibrillation Lasting 94 Seconds Recorded on an Ambulatory Monitor.

Importance: Cardiac arrhythmias are common causes of syncope. Brugada syndrome is an uncommon but serious genetic arrhythmia disorder that can be unmasked by medicines causing sodium channel blockade.

Observations: This report documents a case of Brugada syndrome and polymorphic ventricular tachycardia-ventricular fibrillation not initially recognized in a patient taking nortriptyline and experiencing syncope.

Electrocardiographic patch devices and contemporary wireless cardiac monitoring.

Cardiac electrophysiologic derangements often coexist with disorders of the circulatory system. Capturing and diagnosing arrhythmias and conduction system disease may lead to a change in diagnosis, clinical management and patient outcomes. Standard 12-lead electrocardiogram (ECG), Holter monitors and event recorders have served as useful diagnostic tools over the last few decades.

Treatment of anxiety and depression in a patient with brugada syndrome.

Background. Brugada syndrome is rare and has been a clinically diagnosable entity since 1992. Its clinical manifestations are highly variable, and while some patients remain asymptomatic, others endure sudden cardiac death.

Spontaneous deterioration of atrioventricular nodal reentrant tachycardia to polymorphic ventricular tachycardia in the absence of heart disease.

Atrioventricular nodal reentrant tachycardia (AVNRT) is usually associated with a good prognosis. This is a case of a 57-year woman who presented with supraventricular tachycardia that spontaneously deteriorated to polymorphic ventricular tachycardia (PVT). The PVT terminated without treatment after 16 seconds.