Holter monitor
Pronunciation: HOHL-ter
A portable device that continuously records the heart's electrical activity over 24-48 hours to detect arrhythmias.
Full Definition
A Holter monitor is a portable electrocardiographic device that provides continuous recording of the heart's electrical activity over an extended period, typically 24 to 48 hours, while the patient performs normal daily activities. Named after physicist Norman Holter, this diagnostic tool is particularly valuable for detecting intermittent arrhythmias, silent ischemia, or other cardiac abnormalities that might not be captured during a brief office ECG. In cardiac rehabilitation settings, Holter monitoring may be used to assess cardiac rhythm stability before program entry, evaluate exercise-related arrhythmias, or monitor the effectiveness of antiarrhythmic medications. The data provides crucial information for exercise prescription and safety protocols.
Usage
Usage note: Capitalize 'Holter' as it is named after Norman Holter.
In Context
- "The Holter monitor revealed frequent premature ventricular contractions during exercise periods." — Diagnostic report review
- "A 24-hour Holter monitor study was ordered prior to clearance for Phase II rehabilitation." — Pre-participation assessment