title: Reference values of perfusion indices in hemodynamically stable newborns during the early neonatal period.
abstract: We aimed to determine reference values of perfusion index (PI) in healthy newborns during the early neonatal period. Preductal (right hand) and postductal (foot) PI values were assessed during the first 5 days of life by using a new generation pulse oximetry. A total of 241 newborn infants (196 [81.3 %] term and 45 [18.7 %] preterm) were enrolled to the study. On the first day, in term infants, the median (interquartile range [IQR]) preductal and postductal PI were 1.35 (1.02-1.91) and 0.88 (0.62-1.22), respectively (p = 0.001). These values were 0.88 (0.60-1.26) and 0.61 (0.35-0.92) in preterm infants, with the same respect (p = 0.001). From the first to third days, preductal PI remained significantly higher than the postductal PI (p < 0.001, for all comparisons). Both preductal and postductal PI of term newborns were significantly higher than those of preterm infants (p < 0.001, for both comparisons). These differences in PI disappeared on the fifth day of life. Conclusion PI values which reflect peripheral perfusion seem to reach to a steady state on the fifth day of life following physiological maturation.
authors.affiliation: Division of Neonatology, Department of Pediatrics, Dr. Sami Ulus Maternity and Children Hospital, Ankara, Turkey, nhakan@hotmail.com.
authors.forename: Nilay
authors.initials: N
authors.lastname: Hakan
authors.forename: Dilek
authors.initials: D
authors.lastname: Dilli
authors.forename: Aysegul
authors.initials: A
authors.lastname: Zenciroglu
authors.forename: Mustafa
authors.initials: M
authors.lastname: Aydin
authors.forename: Nurullah
authors.initials: N
authors.lastname: Okumus
mesh_terms: D005260:Female; D005528:Foot / Q000098:blood supply*; D006225:Hand / Q000098:blood supply*; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D010092:Oximetry; D012016:Reference Values