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Analgosedation with low-dose morphine for preterm infants with CPAP: risks and benefits.
Acta Paediatrica 2008 July
BACKGROUND: CPAP is widely used in preterm infants on NICUs but it poses a stressful stimulus to the patient, sometimes requiring the use of analgosedative drugs.
AIM: The aim of this study is to evaluate the risks and benefits associated with the use of low-dose morphine in preterm infants with CPAP, especially apnea.
METHODS: Sixty-four CPAP-treated preterm infants, who received a low single dose of morphine (recommended 0.01 mg/kg), were included in this prospective study. Observation-time was 4 h prior to injection, directly before injecting, until 15 min and 15-30 min, 30 min-1 h, 1-2 h, 2-3 h, 3-4 h, 4-5 h and 5-6 h after injection. For all observation periods incidence of apnea, heart rate, respiratory rate and a score for analgesia and for sedation were recorded.
RESULTS: Sixty-four preterm infants (29.6+/-3.3 weeks gestational age (GA), birth weight 1401+/-735 g) received 0.025+/-0.012 mg/kg morphine i.v. on the day 10-13 of life. The decrease in heart and respiratory rate, scores for analgesia and sedation were significant. The overall incidence of apnea did not increase compared to the 4 h pre-morphine period. Six patients (9.3%) experienced considerable delayed apnea. This group was significantly younger in GA (p<0.001) and lighter in birth weight (p=0.002).
CONCLUSION: Morphine in dosage less than half of recommended dosage has a high analgetic and sedative potential. The danger of delayed severe apnea has to be taken into consideration in the clinical situation, especially in patients<28 weeks.
AIM: The aim of this study is to evaluate the risks and benefits associated with the use of low-dose morphine in preterm infants with CPAP, especially apnea.
METHODS: Sixty-four CPAP-treated preterm infants, who received a low single dose of morphine (recommended 0.01 mg/kg), were included in this prospective study. Observation-time was 4 h prior to injection, directly before injecting, until 15 min and 15-30 min, 30 min-1 h, 1-2 h, 2-3 h, 3-4 h, 4-5 h and 5-6 h after injection. For all observation periods incidence of apnea, heart rate, respiratory rate and a score for analgesia and for sedation were recorded.
RESULTS: Sixty-four preterm infants (29.6+/-3.3 weeks gestational age (GA), birth weight 1401+/-735 g) received 0.025+/-0.012 mg/kg morphine i.v. on the day 10-13 of life. The decrease in heart and respiratory rate, scores for analgesia and sedation were significant. The overall incidence of apnea did not increase compared to the 4 h pre-morphine period. Six patients (9.3%) experienced considerable delayed apnea. This group was significantly younger in GA (p<0.001) and lighter in birth weight (p=0.002).
CONCLUSION: Morphine in dosage less than half of recommended dosage has a high analgetic and sedative potential. The danger of delayed severe apnea has to be taken into consideration in the clinical situation, especially in patients<28 weeks.
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