Doig W B
Arch Dis Child. 1971 Jun;46(247):243-6. doi: 10.1136/adc.46.247.243.
Blood gas analysis on arterialized capillary blood in 70 young infants yielded satisfactory information about oxygen therapy. Inspired oxygen concentrations above 40% are often required to raise the capillary Po of hypoxic infants above 70 mmHg. Oxygen concentrations above 40% are difficult to achieve and maintain in presently available oxygen tents, though not in modern incubators, or oxygen chairs. A raised Pco has frequently been found in infants with severe respiratory infections, but oxygen therapy has not resulted in CO narcosis in these acute emergencies.