In 2009, Long Beach Memorial Medical Center began participation in the Angel-Med ALERTS clinical trial. This trial involves an implantable device to monitor the electrical activity of the heart. This device acts as an internal electrocardiogram (ECG). An ECG measures the electrical activity of the heart using leads attached to the skin. One component of the printout from an ECG is called the ST segment. Changes in this portion of the ECG can be an indication of myocardial ischemia (insufficient blood flow to the heart) and/or coronary artery disease. When the implantable device detects such changes , it alerts the patient to seek medical attention.
The intent of this study is to demonstrate the safety and effectiveness of the ST Monitoring Feature in the Fortify® ST ICD (implantable cardioverter defibrillator) system (or other ICD systems with the ST Monitoring Feature). Effectiveness of the device will be evaluated by analyzing the sensitivity of the ST Monitoring Feature to detect clinical events.