Comparison of hemolytic characteristics among paroxysmal nocturnal hemoglobinuria, autoimmune hemolytic anemia and hereditary spherocytosis

Zhonghua xue ye xue za zhi = Zhonghua xueyexue zazhi
W W LiY Z Zheng

Abstract

Objective: To determine the valuable hemolytic characteristics in differential diagnosis of paroxysmal nocturnal hemoglobinuria (PNH), autoimmune hemolytic anemia (AIHA) and hereditary spherocytosis (HS). Method: The clinical and hemolytic characteristics of 108 PNH patients, 127 AIHA patients and 172 HS patients diagnosed from January 1998 to April 2017 were compared. Results: ①Reticulocyte percentage (Ret%) of PNH patients [6.70% (0.14%-22.82%)] was significantly lower than that of AIHA [14.00%(0.10%-55.95%), P<0.001] and HS patients [11.83%(0.60%-57.39%), P<0.001]. The Ret% in PNH patients were significantly lower than those in AIHA and HS patients at the same levels of anemia, except for in mild anemia between PNH and AIHA patients. However, when comparing the Ret% between AIHA and HS patients, there was significant difference only in mild anemia [7.63%(1.87%-29.20%)% vs 11.20%(3.31%-22.44%), z=-2.165, P=0.030]. ②The level of TBIL in HS patients was significantly higher than that in AIHA and PNH patients [79.3 (11.2-244.0) μmol/L vs 57.6 (7.6-265.0) μmol/L, z=5.469, P<0.001; 79.3(11.2-244.0) μmol/L vs 26.2(4.6-217.7) μmol/L, z=-2.165, P<0.001], and the proportion of HS patients with TBIL more than 4 times the upper limit of...Continue Reading

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