Conduction of Electrocardiogram

The goal of this observational study is to develop and validate an optimization algorithm for single-lead ECG conduction intervals using a wearable ECG patch combined with synchronized heart sound data, and to evaluate its agreement with the clinical gold standard (12-lead ECG) in adult patients. The main question it aims to answer is: Does the optimized algorithm, based on ECG patch and synchronous heart sound recordings, improve the detection accuracy of PR interval, QRS duration, and QT interval compared to standard 12-lead ECG? Participants (age ≥18 years, BMI \<35 kg/m², stable sinus rhythm with at least one abnormal conduction interval) will undergo two 2-minute sessions of simultaneous ECG patch and digital stethoscope recordings, followed by standard 12-lead ECG. Data will be used for algorithm training and validation, with primary endpoints being the sensitivity and specificity of the optimized intervals against the gold standard.