Long term electrocardiographic (LTECG) recording is a method of recording the ECG over a designated period of time. This technology allows detection of intermittent arrhythmias, ST segment changes, and repolarization abnormalities. It provides a method for determining whether periodic symptoms are associated with cardiac arrhythmias. Technological advances in the past few years have provided a diversity of recording, transmitting, and analysis systems. Four general types of devices are currently available: continuous recorders, intermittent or event recorders, instruments for real-time recording and transmission of ECGs, and implantable recorders. Types of electrocardiographic recorders are shown in Table 18.1.
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