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At least 559 records · Page 31Linked to original sources
PubMed1977

Exercise studies in horses: 1. A simple telemetry system for recording excercise ECGs in horses.

A robust low cost portable radiotelemetry system is described for the horse and its method of operation and advantages briefly discussed. The equipment consisted of 2 electrodes forming a bipolar lead, a transmitter, a receiver and a writing device. The sitting, application and immobilising of the electrodes was a most important factor in obtaining good quality recordings. ECGs were recorded at all paces and also while jumping and the results proved satisfactory.

Animals↗
PubMed1978

Measurement of diurnal core temperatures of rats in operant cages by AM telemetry.

A special AM telemetric system of recording core temperature was developed for rats working in individual, adjacent operant conditioning chambers within a sound-attenuated room. The system monitored core temperatures of each rat continuously and recorded them, in degrees Celsius, every 30 min so that diurnal patterns and fluctuations after saline or drug injections could be determined. Periodic comparisons showed close agreement with temperatures recorded by a rectal probe.

Animals↗
PubMed1977

Storage telemetry of radionuclide tracers by implantable thermoluminescent dosimeters.

A storage telemetrical method using thermoluminescent (TL) dosimeters for long-term measurements of incorporated radioactive substances in unrestrained rats has been developed. The system has been used in combination with radiotelemetrical registration of the circadian temperature rhythm. By sequential replacement of double TL dosimeters (60 mg, CaSO4:Dy) through an implanted silicon tube, the concentration of different radionuclides can be determined over long periods. The persistence of the circadian temperature rhythm indicates that the animals were unaffected by the experimental conditions. The relative uncertainty of the dosimeter system and the temperature transmitter is approximately +/- 2% (SD) at 5 mR exposures and +/- 0.05 degrees C, respectively. The weight of the system in total is 5.7 g. Disappearance studies (36-48 h) have been performed with the beta-emitters, 32P nad 42K, in subcutaneous tissues and tumor tissue. This TL method permits the repetition of an experiment on the same rat several times, and thereby avoids errors due to biological variations between animals.

Animals↗