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Holter monitor Syllabification: Holt·er mon·i·tor
Pronunciation: /ˈhōltər ˌmänədər/

Definition of Holter monitor in English:


A portable device that records the rhythm of the heart continuously, typically for 24-48 hours, by means of electrodes attached to the chest.


1950s: named after Norman J. Holter (1914–83), the American biophysicist who invented it.


When a patient is fitted with a Holter monitor, the recording device may be on a strap that goes around the neck or over the shoulder. This procedure is so suggestive of wearing a halter that it is not surprising that many people, including some healthcare professionals, believe they are correct in calling the device a halter monitor. In fact, the true name has nothing to do with the way the device is worn, but refers only to the man who invented it: Norman J. Holter. Even though the pronunciations of Holter and halter differ, the mistaken identity is persistent.

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