Different hypotensive responses to intravenous bovine and human thrombin preparations in swine.
نویسندگان
چکیده
BACKGROUND Accidental intravenous introduction of commercial bovine thrombin (BT) during use of fibrin glue may result in profound hypotension. Commercial human thrombin (HT) is now available. This study compared the effects of intravenous BT versus HT in swine. METHODS Swine received 30 U/kg BT, 60 U/kg BT, 30 U/kg HT, or 60 U/kg HT intravenously. Mean arterial pressure (MAP) and survival were monitored for 30 minutes. Thrombin purities and in vitro activities were examined. RESULTS MAP nadir was lower (p < 0.05) after BT, 27.7 +/- 3.3% (mean +/- SEM) of pretreatment MAP, compared with 41.1 +/- 3.7% after HT. Five of six animals died after 60 U/kg BT, whereas all others survived (p < 0.05). Histology suggested more severe disseminated intravascular coagulation after BT. HT was purer than BT. In vitro activities were similar. CONCLUSION Both BT and HT produced hypotension. HT appeared safer, because of higher purity. Regardless of source and purity, thrombin must be used with caution.
منابع مشابه
A Comparison of Avitene Ultrafoam versus Gelfoam With and Without Thrombin to Effectively Control Bleeding
Topical hemostatic agents are used to stop bleeding in a wide range of surgical procedures. Many of the products currently available are not effective in controlling blood loss as quickly as desired, therefore, it has become common to soak hemostatic agents with thrombin, the enzyme that catalyzes the conversion of fibrinogen to fibrin. The preparation of thrombin requires additional preparatio...
متن کاملDevelopment of antibodies to thrombin and factor V with recurrent bleeding in a patient exposed to topical bovine thrombin.
A 65 year old patient who was exposed to topical bovine thrombin during cardiac surgery developed markedly prolonged clotting times and a severe bleeding diathesis. Mixing studies with normal plasma failed to correct the clotting times. Platelet transfusions, immunosuppressive and immunomodulatory therapies were ineffective, but plasmapheresis was effective in decreasing clotting times and in t...
متن کاملVasoactive side effects of intravenous immunoglobulin preparations in a rat model and their treatment with recombinant platelet-activating factor acetylhydrolase.
Previously, we observed in a rat model that intravenous administration of intramuscular immunoglobulin preparations induced a long-lasting hypotension, which appeared to be associated with the presence of IgG polymers and dimers in the preparations, but unrelated to complement activation. We found evidence that this hypotensive response is mediated by platelet-activating factor (PAF) produced b...
متن کاملUsing various antigen preparations to produce monoclonal antibodies against bovine leukaemia virus (BLV) gp51SU
The objective of this study was to compare different antigen preparations to produce monoclonalantibodies against bovine leukaemia virus gp51SU. The four antigen preparations for immunization ofBALB/c mice were: CL: BLV-FLK cell lysate, UF: a fraction of CL (between 30 and 100 kDa), WVP: wholevirus particles and SP: with ion exchange chromatography, gp51SU was semipurified. A total of ninesucce...
متن کاملRecent developments in topical thrombins.
Managing blood loss is part of the surgeon's responsibility during surgical procedures, and a variety of therapeutic strategies are available to help accomplish this. Topical haemostatic agents are among the agents used to control surgical bleeding and locally arrest blood flow. Bovine thrombin is a commonly used topical haemostatic agent; however, its use has been associated with potential ris...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The Journal of trauma
دوره 50 1 شماره
صفحات -
تاریخ انتشار 2001