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Table 3 Incidence of Abnormality in Red Blood Cell up to Seven Days after Surgery

From: A retrospective cohort study on red blood cell morphology changes in pre-school age children under nitrous oxide anesthesia

  Air group N2O group P value
Anemia (Hb < 110 g/L), N (%) 42 (64.6) 30 (42.3) 0.009
Macrocytosis (MCV > 97 fL), N (%) 0 0
Microcytosis (MCV < 82 fL), N (%) 37 (56.9) 37 (52.1) 0.574
Hypochromatosis (MCHC< 320 g/L), N (%) 1 (1.5) 0 (0) 0.478
Hyperchromatosis (MCHC> 360 g/L), N (%) 4 (6.2) 3 (4.2) 0.709
Anisocytosis (RDW > 15%), N (%) 6 (9.2) 5 (7.0) 0.640
  1. Data are presented as numbers (percentage). N2O nitrous oxide; Hb hemoglobin; MCV mean corpuscular volume; MCHC mean corpuscular hemoglobin concentration; RDW red-cell distribution width