Pilot study of milrinone for low systemic blood flow in very preterm infants

The Journal of Pediatrics
Mary ParadisisAndrew J McLachlan

Abstract

To examine the hemodynamic effects of milrinone given prophylactically to very preterm infants at high risk of low superior vena cava (SVC) flow and to investigate the preliminary efficacy and safety of an optimal dose. This was a prospective, open-label study in two stages. The first involved dose escalation in two cohorts. Milrinone infusions of 0.25 microg/kg per minute (n = 8) and then 0.5 microg/kg per minute (n = 11) were administered from 3 to 24 hours of age. Population pharmacokinetic modeling was used to develop an optimized dose regimen. Ten infants then were loaded with 0.75 microg/kg per minute for 3 hours, followed by 0.2 microg/kg per minute maintenance until 18 hours of age. Infants were monitored for blood pressure, serial echocardiograms, and blood milrinone levels. The primary outcome was maintenance of SVC flow greater than 45 mL/kg per minute through the first 24 hours. Low SVC flow developed in 36% of babies at both 0.25 microg/kg per minute and 0.5 microg/kg per minute of milrinone. Blood levels on these two regimens were slow to reach the target range and accumulated above this range by 24 hours. At 0.75 to 0.2 microg/kg per minute, no infant had SVC flow below 45 mL/kg per minute, compared with 61% in h...Continue Reading

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Mar 22, 2008·Intensive Care Medicine·Chloë JoyntPo-Yin Cheung
Sep 5, 2008·Indian Journal of Pediatrics·Praveen KhilnaniJoe Carcillo
May 13, 2006·Archives of Disease in Childhood. Fetal and Neonatal Edition·Mary ParadisisDavid Osborn
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