Respiratory function in infants with Arnold-Chiari malformation.

The respiratory pattern of each of eight infants with Arnold-Chiari malformation was studied, employing an especially constructed nosepiece for the pneumotachograph. The apparatus was developed, using the principle that infants are nose breathers. Respiratory function was normal in seven infants and abnormal in one. The respiratory pattern of infants with ACM should be critically reviewed upon observing any changes in breathing.