title: CO2 breathing of children.
abstract: In 20 co-operative paediatric patients without cardiopulmonary disease, 2 and 4% CO2 in air were given to breathe and the ventilatory response as well as end-tidal CO2 were recorded. A rise of ventilation concomitant with a rise in alveolar CO2 was seen in most cases. The amount of ventilatory response was less than that previously reported with tube rebreathing for any given rise in alveolar PCO2. It appears therefore, that in addition to the absolute level of PaCO2, the mode of presentation of the CO2 signal to chemosensitive areas also serves as an important determinant for the amount of the ventilatory response.
mesh_terms: D000293:Adolescent; D002245:Carbon Dioxide; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D012123:Pulmonary Ventilation; D012119:Respiration; D013990:Tidal Volume
chemical_list: D002245:Carbon Dioxide