Tag Robert D. Christensen MD

Neonatal and Perinatal Medicine

New erythrocyte diagnostic parameters in neonatal medicine

Introduction In 1929 Wintrobe published a method for measuring the percent of blood comprised of red cells—the hematocrit. Soon thereafter he reported a method for measuring the volume of the average circulating red blood cell (RBC), in femtoliters (fL, 10…

Hematology and Transfusion Medicine: Neonatology Questions and Controversies
March 22, 2024

Neonatal and Perinatal Medicine

Nucleated red blood cells in neonatal medicine

Introduction It is distinctly uncommon and definitely pathologic to have nucleated red blood cells (NRBCs) in the circulating blood. This statement is true for all humans—in fact, for all mammals—with the singular exception of newborn infants, where small numbers of…

Hematology and Transfusion Medicine: Neonatology Questions and Controversies
March 22, 2024

Obstetrics and Gynecology

Hematology and Transfusion Medicine

Normal Erythrocyte Values of Neonates 1. A term newborn infant on the day of birth has a hemoglobin (Hgb) of 11.8 g Is that value low or is it within the expected (normal) reference range? Expected values, also called “reference…

Fetal and Neonatal Secrets
January 2, 2024