title: Respiratory regulation after elastic loading and CO2 rebreathing in normal term infants.
abstract: Studies of airway pressure, tidal volume, respiratory duration, and total breath duration before and after elastic loading airway occlusions were carried out on ten full-term, normal infants on two occassions in the first week of life. Using these noninvasive techniques we infer that static compliance and the Hering-Breuer reflex are unchanged during the first week; that infants may increase sensitivity to chemical drive toward the end of the first week; and that there may be a volume related threshold for vagal inhibition of inspiration in some infants.
mesh_terms: D002245:Carbon Dioxide / Q000494:pharmacology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008170:Lung Compliance; D008297:Male; D012123:Pulmonary Ventilation; D012115:Residual Volume; D012119:Respiration / Q000187:drug effects; D012129:Respiratory Function Tests; D013990:Tidal Volume
chemical_list: D002245:Carbon Dioxide