“…Despite the constant pO 2 values during the three days of observation, the statistical difference in HCO 3 , on the one hand, may indicate a deterioration in the general condition of infants, which is associated with the manifestation and increase in clinical signs of generalized infectious-inflammatory process with a simultaneous increase in partially compensated metabolic acidosis [6,7]. These indicators were also influenced by the fact that the oxygen status of capillary blood was determined in only 10 infants who needed an oxygen subsidy due to the severity of the condition.…”