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Background: Noninferiority of omitting intraoperative defibrillation threshold (DFT) testing has been documented for transvenous implantable cardioverter defibrillators (ICD) whereas data for the subcutaneous-ICD (S-ICD) regarding the need for DFT testing, especially during S-ICD generator replacement, is not available.

Methods: A total of 112 consecutive patients who underwent S-ICD generator replacement and routine testing were included in this retrospective single-center study and analyzed regarding the outcome of intraoperative DFT.

Results: The majority of patients (87.

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Background: An atrioventricular defibrillator system with a floating atrial dipole (VDD ICD) can provide atrial sensing by a single lead. Our aim was to compare the arrhythmia detection efficacy of VDD ICDs with conventional single- (VVI) and dual-chamber (DDD) defibrillators.

Methods: Data from consecutive patients undergoing ICD implantation were retrospectively analyzed.

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Background: Brugada syndrome (BrS) is an inherited channelopathy characterized by right precordial ST-segment elevation. This study investigates the clinical and genetic characteristics of children with BrS in Hong Kong.

Methods: A retrospective review was conducted at the only tertiary pediatric cardiology center in Hong Kong from 2002 to 2022, including all pediatric BrS patients under 18 years old.

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Article Synopsis
  • Cardiac resynchronization therapy (CRT) is effective for treating heart failure but is under-researched in patients with common comorbidities like atrial fibrillation (AF).
  • The SMART registry enrolled 2035 patients to assess CRT response based on clinical outcomes over 12 months, focusing on factors like all-cause mortality, hospitalizations, and quality of life.
  • Results showed 58.9% of patients improved, but factors like age, AF, and diabetes were linked to lower CRT responsiveness, with patients having AF experiencing higher rates of hospitalizations and mortality compared to those in normal rhythm.
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The benefits of permanent cardiac pacing have been widely demonstrated. However, the literature on complications remains inconsistent. We lack precise information about the frequency of complications and their predictive factors in our center.

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