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  • Ambulatory electrocardiographs (ECGs) designed for recording the variations of the electric potential caused by the electrical activity of the heart muscle, usually detected at the body surface typically from three to twelve leads simultaneously during a cardiac event. The instrument usually records ECG signals using an electronic storage device (or tape recorder) and it is activated by the patient. The electronic storage device usually includes detachable chest surface electrodes. The recorded signals are analyzed in a processor that includes dedicated software. Event ambulatory ECGs are usually worn by the patient for a period of several weeks during normal activities; they are used to detect transient cardiac problems (e.g., variable heart rate, arrhythmia), after myocardial infarction, or other problems of possible cardiac origin (e.g., dizziness, palpitations). Ambulatory event ECGs are not intended for a real-time assessment of the electrocardiogram or other cardiac conditions.
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