Laboratory Medicine ›› 2018, Vol. 33 ›› Issue (2): 106-109.DOI: 10.3969/j.issn.1673-8640.2018.02.003

• Orginal Article • Previous Articles     Next Articles

Establishment of the reference intervals of coagulation function in 0-3-year-old children

ZOU Chen, GAO Yuan   

  1. Department of Clinical Laboratory,Children's Hospital of Shanghai,Shanghai 200062,China;
  • Received:2016-10-05 Online:2018-02-28 Published:2018-03-02

Abstract:

Objective To establish the reference intervals of coagulation function in 0-3-year-old children. Methods Coagulation function was determined in 966 children of 0-3-year-old. The children were required without fever,inflammation,hematological diseases,digestive diseases,respiratory diseases,endocrine diseases,tumor or other genetic diseases and with normal growth. Prothrombin time(PT),prothrombin time international normalized ratio(PT-INR),activated partial thromboplastin time(APTT),fibrinogen(Fib) and thrombin time(TT) were determined. According to age,the 966 children were classified into perinatal newborn (0-7 d),newborn(8-30 d),infant 1(1-6 months),infant 2(7-12 months),child 1(1-2 years) and child 2(2-3 years) groups. The parameters were analyzed statistically,and the reference intervals were evaluated. Results PT showed no statistical significance between 1-6 months and 7-12 months and between 1-2 years and 2-3 years old groups(P>0.05). PT were 12.20-15.08s for 0-7 d,11.84-14.20s for 8-30 d,11.05-13.45s for 1-12 months and 10.92-12.68s for 1-3 years. PT-INR were 1.07-1.45 for 0-7 d,0.99-1.27 for 8-30 d,0.82-1.10 for 1-12 months and 0.83-1.10 for 1-3 years. APTT showed no statistical significance between 0-7 d and 8-30 d,between 7-12 months and 1-2 years and between 7-12 months and 2-3 years old groups(P>0.05). APTT were 21.27-58.20s for 0-30 d,24.67-51.52s for 1-6 months and 24.01-43.73s for 7 months-3 years. Fib showed no statistical significance between 8-30 d and 1-6 months,between 7-12 months and 1-2 years and between 7-12 months and 2-3 years old groups(P>0.05). Fib were 1.43-3.97g/ L for 0-7 d,1.58-3.72g/L for 8 d-6 months and 2.65-3.89g/L for 7 months-3 years. TT showed no statistical significance between 0-7 d and 8-30 d,between 0-7 d and 1-6 months,between 7-12 months and 1-2 years and between 7-12 months and 2-3 years old groups(P>0.05). TT were 15.31-24.83s for 0 d-6 months and 15.83-23.39s for 7 months-3 years. Conclusions Children's coagulation function is in a continuous growing process. There are physiological changes for each parameter of coagulation function. Laboratories should establish suitable reference intervals according to age,in order to provide a reference for clinical diagnosis and treatment of coagulation system diseases,preoperative examination and anticoagulant monitoring.

Key words: Coagulation function, Newborn, Infant, Reference interval

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