[Effects of acidosis on the adaptive behavior of full-term newborn infants]

59 full term, appropriate for gestational age newborn infants (20 delivered by forceps, 39 by cesarean section) with umbilical artery pH below 7.20 are studied in their adaptation period immediately after delivery up to 120 minutes by neonatal monitoring (cardiorespirogram). Control group consists of 50 newborn infants with normal pH (pH greater than or equal to 7.20). There are differences of baseline, of amplitude and frequency of long-term variability and of the initial tachycardytime. The interval to arrive the level of control group depends from the degree of acidosis. Results are demonstrated in 8 diagrams and discussed.