During the course of attacks of severe diarrhea, not of the ileocolitis type, in infants, alterations in the respiration are not infrequently encountered. The usual abdominal type of respiration of the young child is succeeded by one which is both costal and abdominal. The most striking feature is the amplitude of the respirations and the distinct effort with which they are accomplished. They are heaving, the thorax being often greatly elevated and depressed and the accessory muscles of respiration brought into play. There is no evidence of obstruction and no cyanosis. The frequency of the respiration is usually increased but not greatly so. Sometimes there is a greater or less alteration of the depth of the individual respirations so that a modified Cheyne-Stokes type results, but in general the excursions of the thorax and abdomen are nearly the same with succeeding respirations. This increased pulmonary ventilation or hyperpnea may go
HOWLAND J, MARRIOTT WM. ACIDOSIS OCCURRING WITH DIARRHEA. Am J Dis Child. 1916;XI(5):309–325. doi:10.1001/archpedi.1916.04110110002001
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