Chuansumrit A, Manco-Johnson MJ, Hathaway WE. Heparin cofactor II in adults and infants with thrombosis and DIC.
Am J Hematol 1989;
31:109-13. [PMID:
2525333 DOI:
10.1002/ajh.2830310207]
[Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Heparin cofactor II (HC II) was measured by a chromogenic activity assay in normal preterm infants (gestational age, 28-36 weeks; n = 17; 29% +/- 11.5 [mean +/- 1 SD], range 11-51), normal full-term infants (n = 18; 49% +/- 6.6 [mean +/- 1 SD], range 36-58), and normal adults (n = 38; 101% +/- 14 [mean +/- 1 SD], range 73-130). Normal children attained adult levels at approximately 5 to 7 months of age. The lower values in preterm and term infants most likely reflect immature liver function. Neither adults and children with a history of thrombosis with prior negative evaluation (n = 74), patients with documented protein C and protein S deficiency (n = 4), nor sick infants without evidence of consumptive coagulopathy (n = 15) had significantly lower levels of HC II activity. Infants with disseminated intravascular coagulation (n = 2) had strikingly lower levels of HC II activity.
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