Dynamic changes of platelet-related indicators in infants with cow's milk protein allergy
Objective To dynamically monitor and analyze the changes of platelets and related indicators in infants with cow's milk protein allergy(CMPA)during clinical treatment,in order to provide clues for further diagnosis and treatment of CMPA.Methods From August to November in 2022,59 children aged from 1 month to 3 years old with CMPA in the pediatric outpatient clinic were selected as the CMPA group,and 29 healthy children who took physical examination were selected as the control group.The differences in platelet related indicators from a routine blood test were compared between the two groups,and their diagnostic value for CMPA was analyzed by receiver operating characteristic(ROC)curves.Results The mean platelet count(PLT)and plateletcrit(PCT)at baseline in the CMPA group were(374.68±113.21)×109/L and 0.37±0.10,significantly higher than those in control group[(271.07±40.32)× 109/L,0.26±0.05](t=6.27,6.43,P＜0.001).In the CMPA group,after treatment,the mean PLT level was(316.39± 94.68)×109/L,and the mean PCT level was 0.31±0.10,indicating a statistically significant decrease in PLT and PCT levels after treatment compared to baseline(t=4.32,4.75,P＜0.05).The diagnostic performance,indicated by the area under the curve(AUC),for PLT and PCT in diagnosing CMPA was 0.811 and 0.823,respectively.The cutoff values for PLT and PCT were determined to be 304.5 × 109/L and 0.305,respectively.Conclusion The PLT and PCT levels in children with CMPA are found to be higher than those in healthy controls,suggesting their potential diagnostic value in the diagnosis of CMPA.
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