title: Heart rate- and ECG-recording in the rat by biotelemetry.
abstract: A method for 24 h recording of the heart rate (HR) in unrestrained, freely moving rats is described. Commercially available biotelemetry transmitters were used in combination with normal ranged FM-receivers. The data presented show a pronounced diurnal rhythm in the HR of the rat. When the rats are exposed to noise a large increase in the HR could be demonstrated. The system described is also suitable for analysis of the time parameters of the electro-cardiogram (ECG).
mesh_terms: D000818:Animals; D003624:Darkness; D004562:Electrocardiography / Q000662:veterinary*; D005260:Female; D006339:Heart Rate; D008027:Light; D051381:Rats / Q000502:physiology*; D011919:Rats, Inbred Strains / Q000502:physiology; D013686:Telemetry