studying the development of transcutaneous blood gas levels ( tcpo2 and tcpco2 ) and the sleep apnea profile in relation to sleep states in normal preterm infants between 36 and 52 weeks postconceptual age we found a dynamic increase in tcpo2 during regular breathing ( without apnea ) and a steady decrease in tcpco2 during both regular and periodic breathing .
C0037315
sleep apnea
C0003578
apnea