A low-cost modular oxygen-consumption device for small animals.
J Appl Physiol Respir Environ Exerc Physiol
; 57(5): 1591-3, 1984 Nov.
Article
en En
| MEDLINE
| ID: mdl-6520057
ABSTRACT
This paper describes a simple apparatus enabling the O2 consumption of small animals to be monitored. The system consists of a sensitive solid-state pressure transducer linked via a relay to a small peristaltic pump. While the animal breathes air in its closed chamber the CO2 expired is removed by an absorber; hence the pressure falls. The signal is sensed by the transducer triggering the pump to deliver a set volume of O2 to the chamber. The number of pump operations per unit time necessary to keep the system equilibrated is a measure of the O2 consumption rate. Each device is built as a module, up to four being mounted in one assembly controlled by a microcomputer. A balance control, priming switch, pump-volume setting, and electromagnetic counter are built into each front panel. Calibration is achieved be removing a known volume of air from the system with no animal present and counting the number of operations to return the chamber to equilibrium.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Consumo de Oxígeno
/
Monitoreo Fisiológico
Tipo de estudio:
Health_economic_evaluation
Límite:
Animals
Idioma:
En
Revista:
J Appl Physiol Respir Environ Exerc Physiol
Año:
1984
Tipo del documento:
Article