Measurement of respiratory water loss in newborn lambs.
Acta Physiol Scand
; 127(1): 61-5, 1986 May.
Article
em En
| MEDLINE
| ID: mdl-3088913
ABSTRACT
A flow-through system for measurement of respiratory water loss, providing data on oxygen consumption and carbon dioxide production, is described. The system uses a mass spectrometer, specially equipped with a water channel, for analysis of gas concentrations. To avoid condensation of water vapour, the tubing in the flow-through system is heated. The method was tested by evaporating known amounts of water, and was found to be very accurate with a correlation coefficient of 0.999. Measurements were made in 10 fullterm lambs of varying postnatal age (4-15 days) and a mean respiratory water loss (RWL) of 11.7 mg kg-1 min-1 was found at rest. The RWL decreased with increasing postnatal age, as did oxygen consumption. The RWL at rest was influenced by the ambient relative humidity, with higher values at lower humidities.
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01-internacional
Base de dados:
MEDLINE
Assunto principal:
Consumo de Oxigênio
/
Respiração
/
Perda Insensível de Água
/
Animais Recém-Nascidos
Limite:
Animals
Idioma:
En
Revista:
Acta Physiol Scand
Ano de publicação:
1986
Tipo de documento:
Article