Prevalence of heparin-associated antibodies without thrombosis in patients undergoing cardiopulmonary bypass surgery.
Prevalence of heparin-associated antibodies without thrombosis in patients undergoing cardiopulmonary bypass surgery.
复制标题
接受体外循环手术的患者中无血栓形成的肝素相关抗体的患病率。
DOI：
10.1161/01.cir.95.5.1242
复制
发表时间：
1997
期刊：
影响因子：
37.8
通讯作者：
Mannion,JD
中科院分区：
文献类型：
--
作者：
Bauer,TL;Arepally,G;Konkle,BA;Mestichelli,B;Shapiro,SS;Cines,DB;Poncz,M;McNulty,S;Amiral,J;Hauck,WW;Edie,RN;Mannion,JD
BackgroundPatients with cardiovascular disease almost invariably receive heparin before cardiopulmonary bypass surgery, which places them at risk of developing heparin-associated antibodies with a risk of thromboembolic complications. This study was designed to determine the prevalence of heparin-induced antibodies in patients before and after cardiopulmonary bypass surgery.Methods and ResultsPlasma from 111 patients was tested before surgery and 5 days after surgery for heparin-dependent platelet-reactive antibodies with a14C-serotonin–release assay (SRA) and for antibodies to heparin/platelet factor 4 complexes with an ELISA. Heparin exposure after surgery was minimized. Heparin-dependent antibodies were detected before surgery in 5% of patients with SRA and 19% of patients with ELISA. By the fifth postoperative day, there was a marked increase in patients positive on the SRA or ELISA (13% and 51%, respectively;P<.01 for each). Patients who had received heparin therapy earlier in their hospitalization were more likely to have a positive ELISA before surgery (35%;P=.017) and a positive ELISA (68%;P=.054) or SRA (30%;P=.002) after surgery. However, there was no difference in the prevalence of thrombocytopenia or thromboembolic events between the antibody-positive and -negative groups.ConclusionsApproximately one fifth of patients undergoing cardiopulmonary bypass surgery have heparin-induced platelet antibodies detectable before the procedure as a result of prior heparin exposure, and many more develop antibodies after surgery. The absence of an association between these antibodies and thromboembolic complications in this study may be, in part, attributable to careful avoidance of heparin after surgery. The high prevalence of heparin-induced antibodies in this setting suggests that these patients may be at risk of developing thrombotic complications with additional heparin exposure.
