Anand, K.J.S.

morphine group neonate score study surgery infant patient children effect procedure age groups concentration plasma plasma concentrations infusion response preterm opioid scale treatment outcome naloxone pain scores table postoperative assessment analgesia signicantly value comfortneo ventilation birth placebo result morphine infusion difference range period preterm neonates stress weight nurse baseline arch dis child rotterdam trial distress anand child therapy signi signi ficantly stress responses care unit number variable pediatrics ratio placebo group regression analyses comfort neurologic outcome erasmus mc regression analyses preterm infants suctioning pediatr postoperative analgesia im group ventilatory support morphine administration insertion netherland signicant neurologic center administration newborn