Vascular
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Review Historical Article
Bovine thrombin: history, use, and risk in the surgical patient.
Thrombin is a common hemostatic drug used in surgical practice for over 100 years because of its simplicity and efficacy. Thrombin converts fibrinogen to fibrin, activates platelets, and induces vascular contraction. It is available in multiple forms, including human thrombin, bovine thrombin, and, most recently, human recombinant thrombin. ⋯ Patients with multiple elevated antibodies prior to surgery are also more likely to sustain adverse events. Animal studies confirm these immunological responses seen in humans. With the available clinical and laboratory data, a less immunogenic yet biologically effective thrombin should be available for use in our surgical patients.
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The successful management of patients with arterial or venous vascular disease is increasingly dependent on the effective use of pharmacotherapeutic agents. Anticoagulation therapies for thromboembolic disease are continually improving, and platelet inhibition remains a cornerstone treatment for all patients with atherosclerotic disease. Early ischemic complications can be avoided by proper preoperative prescription, intraoperative management, and postoperative pharmacotherapy. ⋯ Unfractionated or low-molecular-weight heparin, warfarin, and long-term platelet inhibition can improve survival, reduce the risk of other vascular bed ischemic events, and improve the long-term success of the target revascularization procedure. An overview of evidence-based antithrombotic strategies will include a discussion of patients who undergo the two most common open vascular reconstructive procedures, carotid endarterectomy and infrainguinal bypass. The appropriate use of antithrombotic therapy for vascular reconstructive surgery patients has important implications for both short- and long-term patient outcomes.
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The objective of this study was to investigate the risk of acute internal jugular, subclavian, and axillary deep venous thrombosis (upper torso DVT [UTDVT]) and pulmonary embolism (PE) and the role of anticoagulation in a cohort of hospitalized patients. A 2-year retrospective review of hospitalized patients who underwent upper torso vein duplex scanning was performed. Patient demographics, underlying comorbidities, indication for scanning, diagnostic tests, intensive care unit stay, length of stay, presence of a central line (current or within the last 2 weeks), malignancy (current or former), hypercoaguable condition, postoperative state, renal failure, mortality, and use of anticoagulation were recorded. ⋯ Patients with a central line (current or within the previous 14 days) were at greatest risk, with an internal jugular vein thrombosis being the most common source. The inconsistent use of anticoagulation therapy for UTDVT was associated with a moderate risk of PE. A survival benefit for anticoagulation could not be documented.