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CONTROL OF RESPIRATION IN NEWBORN BABIES
Author(s) -
BODEGÅRD GÖRAN
Publication year - 1975
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.1975.tb03905.x
Subject(s) - medicine , tidal volume , respiration , respiratory rate , respiratory system , ventilation (architecture) , pediatrics , anesthesia , physiology , heart rate , anatomy , mechanical engineering , blood pressure , engineering
Bodegård, G. (Department of Paediatrics, Karolinska Institutet, S:t Göran's Children's Hospital, Stockholm, Sweden). Control of respiration in newborn babies. III. Developmental changes of respiratory depth and rate responses to CO 2 . Acta Paediatr Scand, 64:684, 1975.–Thirteen healthy babies with PM ages varying between 32 and 43 weeks were investigated with regard to respiratory depth and rate changes on exposure to 4 %CO 2 in air. Two different types of responses were seen: above 37 weeks of postmenstrual age, the changes of depth and rate corresponded mostly to what is known in the adult human with a rate increase appearing only when the tidal volume had increased markedly (“Type A” responses). The preterm babies (i.e. under 37 weeks of PM age) responded mostly with a prompt rate increase without any preceding increase of the tidal volume (“Type B” response). The results indicate that the preterm baby in contrast to fullterm babies and adults may be dependent on the pulmonary vagal mechanoreceptor system for the regulation of the breathing in eupnoe.