Harmonizing Heartbeats: The Mosaic of Cardiac Resynchronization Therapy Responders-A Comprehensive Exploration of Diverse Criteria and Predictors.

Heart failure (HF) remains a challenging healthcare issue necessitating innovative therapies like cardiac resynchronization-defibrillation therapy (CRT-D). However, the definition of a CRT-D response lacks uniformity, impeding effective clinical evaluation. This study explores diverse CRT-D responder definitions encompassing functional, echocardiographic and laboratory criteria.

Exercise-related T-wave oversensing: an underestimated cause of reduced exercise capacity in a pacemaker-dependent patient-a case report and review of the literature.

A 62-year-old pacemaker-dependent patient presented to our department with a sudden onset of reduced physical capacity. While initial physical and pacemaker evaluations remained without specific findings, Holter-ECG monitoring revealed an abnormal rate response with unusual pauses during physical exercise. Consequently, closer evaluation of the pacemaker system revealed intermittent, exercise-related T-wave oversensing (TWOS).

Short-term pacemaker dependency after transcatheter aortic valve implantation.

Background: Transcatheter aortic valve implantation (TAVI) is a less invasive technique for the treatment of severe aortic stenosis in high-risk patients. Occurrence of conduction disturbances requiring permanent pacemaker (PPM) implantation after TAVI is frequently observed.

Methods: The retrospective analysis comprised 153 patients (96 women, aged from 65 to 97 years) who underwent TAVI due to high-grade aortic stenosis.

The influence of cavotricuspid isthmus length on total radiofrequency energy to cure right atrial flutter.

Background And Aim: The complexity and success rate of right atrial flutter ablation is highly dependent on anatomical structures.

Methods: The study comprised 35 consecutive patients (33-77 years old; 30 men) who underwent ablation of typical atrial flutter. The linear ablation line was measured offline as a surrogate for the cavotricuspid isthmus (CTI) length with the help of a three-dimensional mapping and navigation system (Ensite™).

Coexistence of atrioventricular nodal reentrant tachycardia with other forms of arrhythmias.

Objective: The aim of this retrospective study was to investigate the association of atrioventricular nodal reentrant tachycardia (AVNRT) with other forms of arrhythmia in individual patients and its consequences for treatment.

Subjects And Methods: This study comprised 493 consecutive patients aged 16-88 years (296 women and 197 men) who were diagnosed with a form of AVNRT via a standard 4-catheter electrophysiological study (EPS). Patients were clinically followed (range 0.

Physiotherapy as a Rare Cause of Twiddler's Syndrome in a Patient With an Implanted Cardioverter Defibrillator.

A 65-year-old male patient with a history of ischemic cardiomyopathy developed ventricular tachycardia resulting in presyncope. An ICD was indicated for secondary prophylaxis of ventricular tachyarrhythmias. A dual chamber ICD was implanted from the right side because insertion of the device from the left side was unfeasible after surgery of a left subscapularis tendon lesion.

High incidence of echocardiographic abnormalities of the interatrial septum in patients undergoing ablation for atrial fibrillation.

Background: Atrial fibrosis or fatty deposition is known to increase the propensity for the development of atrial fibrillation (AF). Apart from the pulmonic veins, the interatrial septum (IAS) might play a role in the maintenance of AF. In contrast to left atrial anatomy and adjacent veins, the IAS cannot be visualized in detail with computed tomography.

Ventricular tachycardia in a patient with double valve replacement and bilateral coronary artery fistulas.

A young patient presented with hemodynamic instability due to wide QRS tachycardia occurring about 10 years after double valve replacement. Bilateral coronary artery fistulas draining into the pulmonary artery were documented by invasive coronary angiography as well as by computed tomography imaging. A calcified scar of the posterolateral left ventricle was considered to be the origin of the clinical ventricular tachycardia.

High incidence of tachyarrhythmias detected by an implantable loop recorder in patients with unexplained syncope.

Background: Syncope is a complex clinical syndrome that may be challenging with respect to a definite diagnosis. The implantable loop recorder (ILR) is a useful tool to define but also to exclude an arrhythmic aetiology.

Aim: To investigate the causes of recurrent syncope or near-syncope with respect to underlying arrhythmias in non-selected consecutive patients monitored with an ILR.