SCIMAT / SCIENCE PHOTO LIBRARY SCIMAT / SCIENCE PHOTO LIBRARY
Elderly man wearing a Cardiac Event Recorder. This device, connected to the patient's body with disposable electrodes, records ECG rhythms suggestive of a cardiac arrhythmia (palpitations and slow, fast, or skipped heartbeat). If a cardiac event occurs, the patient starts the recorder by briefly pushing a button marked with a telephone. Up to six events may be recorded in a sequence; they are then transmitted via telephone to the issuing cardiological laboratory for evaluation.
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