Loss of capture of conduction system pacemaker caused by fibrosis surrounding the lead: a case report.

Background: Conduction system pacing (CSP) is a novel technique that involves pacing the His-Purkinje system instead of the traditional right ventricular (RV) apex. This technique aims to avoid the adverse effects of RV apical pacing, which can lead to ventricular dyssynchrony and heart failure over time. CSP is gaining popularity but its long-term efficacy and challenges remain uncertain.

Dealing with RV-oversensing; separate sensitivity settings for brady and tachy sensing.

An 81-year-old male with a history of systolic heart failure due to an underlying ischemic cardiomyopathy with a left ventricular ejection fraction of 13% and QRS duration of 130 ms had undergone an uncomplicated cardiac resynchronization therapy defibrillator implantation (Quadra Assura MP, St. Jude Medical, LV lead (SJM Quartet 1458Q-86), RA lead (Biotronik Safio S53) and RV shocklead (Biotronik Linox Smart S65 ProMRI) in 2015.

The relationship of gross upper and lower limb motor competence to measures of health and fitness in adolescents aged 13-14 years.

Introduction: Motor competence (MC) is an important factor in the development of health and fitness in adolescence.

Aims: This cross-sectional study aims to explore the distribution of MC across school students aged 13-14 years old and the extent of the relationship of MC to measures of health and fitness across genders.

Methods: A total of 718 participants were tested from three different schools in the UK, 311 girls and 407 boys (aged 13-14 years), pairwise deletion for correlation variables reduced this to 555 (245 girls, 310 boys).