Читать книгу Neonatal Haematology - Barbara J. Bain, Irene Roberts - Страница 42

In addition to being influenced by maternal chorioamnionitis, the white cell count (WBC) at birth is also affected by the mode of delivery, being lower after an elective caesarean section than after either vaginal delivery or caesarean section performed after labour has commenced.⁶⁴ Hypoxic ischaemic encephalopathy (HIE) following perinatal hypoxia (e.g. due to the cord being round the neck of the baby) also causes an increased WBC; in this case the blood film is leucoerythroblastic and the neutrophils show varying degrees of toxic granulation, often making it difficult to identify the presence of coexisting infection based on the haematological findings alone (Fig. 1.20).