Hemodynamics and Perfusion in Premature Infants During Transfusion.

BACKGROUND: Premature infants may require packed red blood cell transfusions, but current guidelines lack empirical evidence and vary among institutions and prescribers. OBJECTIVE: To compare the physiological changes in cardiovascular hemodynamics and oxygen delivery between premature infants with anemia who receive packed red blood cell transfusions and premature infants without anemia. METHODS: The study was a prospective observational cohort investigation of 75 premature infants. Comparisons among the data were made before, during, and after transfusion in infants with anemia and over time in infants in the control group. In infants with anemia, feedings were withheld 12 hours before and after transfusions. RESULTS: Electrical cardiometry and near-infrared spectroscopy measurements in premature infants with anemia revealed changes in hemodynamic parameters not detected by standard bedside monitoring. Statistically significant changes were seen before and after transfusions in cardiac output, fractional tissue oxygen extraction, heart rate variability, heart rate complexity, and splanchnic regional tissue oxygen saturation. CONCLUSION: Bedside monitoring of cardiovascular hemodynamics and oxygen delivery during packed red blood cell transfusion may inform individualized care for the premature infant with anemia and could be useful for the development of evidence-based practice guidelines.

Reduction of severe hyperbilirubinemia after institution of predischarge bilirubin screening.

OBJECTIVE: The objective of this study was to demonstrate efficacy of universal predischarge neonatal bilirubin screening in reducing potentially dangerous hyperbilirubinemia in a large, diverse national population. METHODS: This was a 5-year prospective study directed at neonates who were aged < or =28 days and evaluated at facilities of the Hospital Corporation of America with a serum bilirubin level of > or =20.0 mg/dL. This time frame includes periods before, during, and after the initiation of systemwide institution of a program of universal predischarge neonatal bilirubin screening. The primary outcome measures were serum bilirubin 25.0 to 29.9 and > or =30.0 mg/dL. Neonatal phototherapy use during these years was also analyzed. RESULTS: Of the 1,028,817 infants who were born in 116 hospitals between May 1, 2004, and December 31, 2008, 129,345 were delivered before implementation and 899,472 infants were delivered after implementation of this screening program in their individual hospitals. With a program of universal screening, the incidence of infants with total bilirubin 25.0 to 29.9 mg/dL declined from 43 per 100,000 to 27 per 100,000, and the incidence of infants with total bilirubin of > or =30.0 mg/dL dropped from 9 per 100,000 to 3 per 100,000 (P = .0019 and P = .0051, respectively). This change was associated with a small but statistically significant increase in phototherapy use. CONCLUSIONS: A comprehensive program of prevention, including universal predischarge neonatal bilirubin screening, significantly reduces the subsequent development of bilirubin levels that are known to place newborns at risk for bilirubin encephalopathy.