How long was the Holter monitor typically designed to record heart activity continuously?
Answer
12 to 24 hours
The Holter monitor, invented by Dr. William J. Holter, was specifically designed for continuous recording of the heart’s electrical activity over an extended duration, typically ranging from 12 to 24 hours. This extended recording capacity was crucial for its diagnostic utility, allowing physicians to review data that captured intermittent cardiac events occurring outside the controlled environment of a clinic. The device, though wearable, utilized separate components, including magnetic tape storage, to document this long-duration activity.
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