Читать книгу Neonatal Haematology - Barbara J. Bain, Irene Roberts - Страница 33

Blast cells, usually resembling myeloblasts, are a normal feature on neonatal blood films (see Fig. 1.14). Their numbers are increased in preterm compared with term babies and in babies with severe infection. A study that evaluated blood films in 123 healthy neonates found an upper limit of 4% for the frequency of circulating blasts in neonatal blood, whereas for sick babies up to 8% blasts were occasionally seen.⁶⁸ The causes of increased blast cells in neonates are discussed in Chapter 3 (see Table 3.6).