Evaluation of an AI-Based Lightweight ECG Telemetry Monitoring System

Inclusion Criteria: * Patients undergoing cardiac surgery for cardiac diseases, including aortic valve stenosis, pulmonary valve regurgitation, mitral valve stenosis, mitral valve regurgitation, acute myocardial infarction, unstable angina, stable angina, aortic aneurysm, aortic dissection, atrial septal defect, cardiac tumor, and atrial fibrillation * Patients who voluntarily decide to participate in this clinical study and provide written informed consent Exclusion Criteria: * Patients younger than 19 years of age or 80 years of age or older * Pregnant or lactating women * Patients whom the investigator judges to be unsuitable for participation in this clinical study or whose participation may increase the risk to the patient * Patients with sensitive skin, an allergic reaction to silicone, or skin rash at the intended device application site * Patients who, due to cognitive vulnerability, are judged to be unable to understand the information related to the study, appreciate its significance, and make an independent voluntary decision regarding participation Hemodynamically unstable patients, including those receiving extracorporeal membrane oxygenation (ECMO) or high-dose inotropic support (e.g., epinephrine) * Patients whom the investigator considers inappropriate for participation in this clinical study for ethical reasons or because participation may affect the study results. Specific reasons will be documented in the source records.