The erythrocyte indices of neonates, defined using data from over 12 000 patients in a multihospital health care system

Abstract

The results describe the expected values for erythrocyte indices on the first day of life among untransfused neonates. Additional study is needed to determine the relevance of very high or low erythrocyte indices in this population and to understand any physiological advantage of these very large erythrocytes during fetal development.

Expected ranges for blood neutrophil concentrations of neonates: the Manroe and Mouzinho charts revisited

“…However, since those publications the CBC has become a commonly performed test in the neonatal intensive care unit, and one conveying a multiplicity of information not otherwise available. 3 On that basis, we judge that efforts to refine the interpretability of CBCs from neonatal intensive care unit patients are worthwhile, 24 and we maintain that our present update of the landmark papers of the Dallas group is a useful step in that direction. The publications by Carballo et al 15 and Maynard et al 16 recommended that neonatal centers at high Upper limit at delivery (ml À1 ) Lower limit at delivery (ml À1 )…”

Pyruvate kinase deficiency as a cause of extreme hyperbilirubinemia in neonates from a polygamist community

“…All four affected neonates had normal mean corpuscular hemoglobin concentration measurements ranging from 32.3 to 34.2 g per 100 ml, [9][10][11] but markedly elevated red cell distribution width measurements (normal: 13 to 15%), 10,12 and markedly elevated reticulocyte counts ( Table 1). None of the four neonates developed recognizable bilirubin neurotoxicity.…”

“…Reference ranges for erythrocyte indices of neonates at Intermountain Healthcare were published previously. 9 During the specified 5-year period, five neonates with PK deficiency were detected at Intermountain Healthcare (prevalence estimate, 1 case per 30 000 births). However, four of the five neonates were from one small town, a polygamist community, where the birth rate during this period was B200 per year.…”

Reference Intervals of Platelets, Lymphocytes and Cardiac Biomarkers in Umbilical Cord Blood

“…At birth, full-term newborns show relative polycythemia, macrocytosis, and marked polychromasia with nucleated red blood cells (RBCs) [7,8]. The red cell distribution width (RDW) is elevated, showing anisocytosis, compared with adult standards.…”