Christian Ellermann
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View article: ECG‐Capable Smartwatches Can Induce Magnet Mode in Cardiac Implantable Electronic Devices
ECG‐Capable Smartwatches Can Induce Magnet Mode in Cardiac Implantable Electronic Devices Open
Background Smartwatches are increasingly used for screening of tachyarrhythmias and for ECG recording. We therefore investigated possible mechanisms of magnet‐mode induction of smartwatches in cardiac implantable electronic devices (CIED).…
View article: Efficacy and safety of ajmaline in patients with electrical storm
Efficacy and safety of ajmaline in patients with electrical storm Open
In selected patients with refractory ES, intravenous ajmaline treatment was associated with a reduction in VAs and a favourable safety profile. Ajmaline may serve as a valuable bridge to definitive treatment in life-threatening ES.
View article: When the All-Purpose Tool Fails: Manufacturer-Specific Time Dependency of Magnet Mode in Cardiac Implantable Electronic Devices
When the All-Purpose Tool Fails: Manufacturer-Specific Time Dependency of Magnet Mode in Cardiac Implantable Electronic Devices Open
Background: Previously unreported, the induction of the magnet mode is time-dependent, according to the cardiac implantable electronic device (CIED) manufacturer, directly after device interrogation. The aim of this study was to systematic…
View article: Interatrial Block as a Common Finding in Patients with Acute Pulmonary Artery Embolism
Interatrial Block as a Common Finding in Patients with Acute Pulmonary Artery Embolism Open
Background/Objectives: Electrocardiographic (ECG) findings such as sinus tachycardia and right bundle branch block are commonly associated with acute pulmonary embolism (PE). This study aimed to investigate the prevalence of advanced inter…
View article: Early Ventricular Arrhythmias Correlate with Adverse Outcome in Takotsubo Syndrome: Analysis of a Large Single-Center Database
Early Ventricular Arrhythmias Correlate with Adverse Outcome in Takotsubo Syndrome: Analysis of a Large Single-Center Database Open
Background: Takotsubo syndrome (TTS) is an acute cardiac condition characterized by transient left ventricular dysfunction. Although generally considered reversible, early arrhythmias are a dreaded complication and their prognostic signifi…
View article: Transvenous cardiac implantable electronic devices withstand contact sports in an experimental model
Transvenous cardiac implantable electronic devices withstand contact sports in an experimental model Open
Aims Cardiac implantable electronic device (CIED) patients are routinely advised against physical activity with a risk of collision because of expected damage to the implanted device. However, no data support this practice. Methods and res…
View article: First-line catheter ablation for atrial fibrillation - lower than recommended doses of antiarrhythmic drugs may have contributed to their inferiority: Analysis of randomized controlled studies comparing ablation with antiarrhythmic drugs
First-line catheter ablation for atrial fibrillation - lower than recommended doses of antiarrhythmic drugs may have contributed to their inferiority: Analysis of randomized controlled studies comparing ablation with antiarrhythmic drugs Open
Catheter ablation plays a pivotal role in the management of atrial fibrillation (AF). Recent randomized controlled studies have shown that catheter ablation is superior to conventional antiarrhythmic medical treatment as first-line therapy…
View article: Preventing smartphone induction of magnet mode in cardiac implantable electronic devices
Preventing smartphone induction of magnet mode in cardiac implantable electronic devices Open
Aims Wireless charging capable smartphones may interact with cardiac implantable electronic devices (CIED). We hypothesized that magnetic shielding with a steel plate placed at the back of a smartphone may prevent interaction. Methods and …
View article: Cardiac Electrophysiological Effects of the Sodium Channel-Blocking Antiepileptic Drugs Lamotrigine and Lacosamide
Cardiac Electrophysiological Effects of the Sodium Channel-Blocking Antiepileptic Drugs Lamotrigine and Lacosamide Open
Background: The two antiepileptic drugs lacosamide and lamotrigine exert their antiepileptic effect by inhibiting sodium channels. Lacosamide enhances the inactivation of sodium channels, while lamotrigine inhibits the activation of the ch…
View article: Changing Antiarrhythmic Drug Regimen in Patients with Amiodarone and Ablation Refractory Ventricular Tachyarrhythmias Is Associated with Increased Implantable Cardioverter Defibrillator Shocks—A Retrospective Analysis from a Large Tertiary Center
Changing Antiarrhythmic Drug Regimen in Patients with Amiodarone and Ablation Refractory Ventricular Tachyarrhythmias Is Associated with Increased Implantable Cardioverter Defibrillator Shocks—A Retrospective Analysis from a Large Tertiary Center Open
Background and Objective: Implantable Cardioverter Defibrillators (ICDs) are crucial in treating ventricular tachyarrhythmias (VTs) and preventing sudden cardiac death. However, ICD shocks are linked to higher mortality and a lower quality…
View article: Tpeak–Tend interval predicts arrhythmia recurrence in idiopathic ventricular fibrillation and early repolarization syndrome
Tpeak–Tend interval predicts arrhythmia recurrence in idiopathic ventricular fibrillation and early repolarization syndrome Open
Background In about 8% of survivors of sudden cardiac death, no structural or electrical heart disease can be identified. Some of these patients with idiopathic ventricular fibrillation (IVF) present ECG markers of early repolarization (Ea…
View article: Effects of handheld electro-shockers on cardiac implantable electronic devices
Effects of handheld electro-shockers on cardiac implantable electronic devices Open
Handheld electro-shockers pose a substantial acute risk for interaction with CIEDs. The individual risk depends on electro-shocker voltage, manufacturer, and type of cardiac device.
View article: Divergent Electrophysiologic Effects of Sacubitril in Digitalis- and Pinacidil-Related Shortened Repolarization: Experimental Evidence for Harmful Effects of Digitalis Glycosides
Divergent Electrophysiologic Effects of Sacubitril in Digitalis- and Pinacidil-Related Shortened Repolarization: Experimental Evidence for Harmful Effects of Digitalis Glycosides Open
Background: Recent studies reported an abbreviation of cardiac repolarization induced by sacubitril. Thus, the purpose of this study was to evaluate the electrophysiologic effects of sacubitril in the presence of drugs that shorten the QT …
View article: Corrigendum: Divergent electrophysiologic action of dapagliflozin and empagliflozin on ventricular and atrial tachyarrhythmias in isolated rabbit hearts
Corrigendum: Divergent electrophysiologic action of dapagliflozin and empagliflozin on ventricular and atrial tachyarrhythmias in isolated rabbit hearts Open
[This corrects the article DOI: 10.3389/fcvm.2024.1369250.].
View article: Comparison of the Latest ESC, ACC/AHA/ACCP/HRS, and CCS Guidelines on the Management of Atrial Fibrillation
Comparison of the Latest ESC, ACC/AHA/ACCP/HRS, and CCS Guidelines on the Management of Atrial Fibrillation Open
The introduction of evidence-based and structured guidelines has undoubtedly improved the care of cardiologic patients and in many cases simplified decision-making for the treatment team. The European Society of Cardiology in collaboration…
View article: Sacubitril Does Not Exert Proarrhythmic Effects in Combination with Different Antiarrhythmic Drugs
Sacubitril Does Not Exert Proarrhythmic Effects in Combination with Different Antiarrhythmic Drugs Open
Background: Previous studies suggest a direct effect of sacubitril on cardiac electrophysiology and indicate potential arrhythmic interactions between sacubitril and antiarrhythmic drugs. Therefore, the aim of this study was to explore the…
View article: Pacemaker Implantation for Low‐Grade Conduction Abnormalities After Balloon‐Expandable Transcatheter Aortic Valve Implantation
Pacemaker Implantation for Low‐Grade Conduction Abnormalities After Balloon‐Expandable Transcatheter Aortic Valve Implantation Open
Introduction A frequent complication after TAVI are postinterventional conduction abnormalities requiring permanent pacemaker implantation. In this study, we analyzed the characteristics of borderline conduction abnormalities leading to pa…
View article: Divergent electrophysiologic action of dapagliflozin and empagliflozin on ventricular and atrial tachyarrhythmias in isolated rabbit hearts
Divergent electrophysiologic action of dapagliflozin and empagliflozin on ventricular and atrial tachyarrhythmias in isolated rabbit hearts Open
Background The use of SGLT-2 inhibitors has revolutionized heart failure therapy. Evidence suggests a reduced incidence of ventricular and atrial arrhythmias in patients with dapagliflozin or empagliflozin treatment. It is unclear to what …
View article: Validation of the PRAETORIAN score in a large subcutaneous implantable cardioverter-defibrillator collective: Usefulness in clinical routine
Validation of the PRAETORIAN score in a large subcutaneous implantable cardioverter-defibrillator collective: Usefulness in clinical routine Open
PRAETORIAN score proved to be a useful and valid predictive tool for successful DFT, whereas BMI only had a limited role. Patients with HCM were at increased risk for DFT failure or needed higher DFT energy.
View article: Relevance of mexiletine in the era of evolving antiarrhythmic therapy of ventricular arrhythmias
Relevance of mexiletine in the era of evolving antiarrhythmic therapy of ventricular arrhythmias Open
Despite impressive developments in the field of ventricular arrhythmias, there is still a relevant number of patients with ventricular arrhythmias who require antiarrhythmic drug therapy and may, e.g., in otherwise drug and/or ablation ref…
View article: Antiarrhythmic Treatment in Heart Failure
Antiarrhythmic Treatment in Heart Failure Open
Purpose of Review Arrhythmias are common in patients with heart failure (HF) and are associated with a significant risk of mortality and morbidity. Optimal antiarrhythmic treatment is therefore essential. Here, we review current approaches…
View article: Temperature to time Catch-Up: a novel procedural endpoint to predict durable pulmonary vein isolation after cryoballoon ablation of paroxysmal atrial fibrillation
Temperature to time Catch-Up: a novel procedural endpoint to predict durable pulmonary vein isolation after cryoballoon ablation of paroxysmal atrial fibrillation Open
Background Cryoballoon ablation is a widely used single-shot technique for pulmonary vein isolation (PVI) in the treatment of paroxysmal atrial fibrillation (AF). Procedural endpoints ensuring maximal PVI durability are important. Objectiv…
View article: Use of direct oral anticoagulants in patients on chronic hemodialysis: Contemporary appraisal on the role for patients with atrial fibrillation
Use of direct oral anticoagulants in patients on chronic hemodialysis: Contemporary appraisal on the role for patients with atrial fibrillation Open
Atrial fibrillation (AF) is common in patients with chronic kidney disease (CKD) undergoing hemodialysis and in this patient population, management in terms of oral anticoagulation (OAC) presents unique challenges due to the increased risk…
View article: Lidocaine as an anti‐arrhythmic drug: Are there any indications left?
Lidocaine as an anti‐arrhythmic drug: Are there any indications left? Open
Lidocaine is classified as a class Ib anti‐arrhythmic that blocks voltage‐ and pH‐dependent sodium channels. It exhibits well investigated anti‐arrhythmic effects and has been the anti‐arrhythmic of choice for the treatment of ventricular …
View article: Left Atrial Posterior Wall Isolation with Pulsed Field Ablation in Persistent Atrial Fibrillation
Left Atrial Posterior Wall Isolation with Pulsed Field Ablation in Persistent Atrial Fibrillation Open
Background: Left atrial posterior wall isolation (LAPWI) may improve rhythm control in addition to pulmonary vein isolation (PVI) in persistent atrial fibrillation (persAF) patients undergoing catheter ablation (CA). However, LAPWI may be …
View article: Feasibility and efficacy of a novel size adjustable cryoballoon for ablation of atrial fibrillation
Feasibility and efficacy of a novel size adjustable cryoballoon for ablation of atrial fibrillation Open
The aim of the present case series was to characterize the feasibility of a novel size adjustable cryoballoon system (PolarX Fit, Boston Scientific, Marlborough, MA, USA). This cryoballoon catheter can be inflated to two different diameter…
View article: Transvenous vs. subcutaneous ICDs after transvenous device complication
Transvenous vs. subcutaneous ICDs after transvenous device complication Open
Funding Acknowledgements Type of funding sources: Private company. Main funding source(s): Boston Scientific Background During long-term follow-up of patients with implantable cardioverter defibrillators (ICD) numerous problems may occur. …