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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of orthopaedic surgery & traumatology 9 (1999), S. 205-207 
    ISSN: 1432-1068
    Keywords: Hip-replacement ; Reexposition ; Heparin ; Thrombocytopenia ; Arthroplastie de hanche ; Réexposition ; Thrombocytopénie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé La thrombopénie type II provoquée par l'héparine est une complication liée à ce médicament rare mais importante, associée à une thrombopénie et des thromboses. Nous présentons ici un patient après une révision élective d'une plastie dé l'articulation coxo-fémorale. Avant l'opération, le patient a obtenu 5000 IU d'héparine non fractionnée trois fois par jour durant dix-neuf jours. Après l'opération, le patient a eu un abaissement du nombre de plaquettes sanguines de 236'000/μl à 69'000/μl, il a développé une thrombose de la veine iliaque ainsi qu'une embolie pulmonaire. L'héparine étant supposée être à l'origine de la thrombopénie, celle-ci a été remplacée par du Sodium-Danaparoid en application sous-cutanée comme anticoagulant. Le nombre de plaquettes est alors remonté à un niveau normal pour trois jours. Suite à un test d'agrégation liée à l'héparine négatif, la thérapie aux anticoagulants a été poursuivie avec de l'héparine non fractionnée appliquée par voie intraveineuse à haute dose, la capacité de coagulation ayant été contrôlée par le test PTT (temps de thrombine partiel). Deux jours après réexposition à l'héparine, les plaquettes ont rechuté à 34'000/μl. is jours après réexposition à l'héparine le patient est mort â la suite d'une insuffisance cardiopulmonaire. Une analyse du sang a démontré la présence d'immunoglobuline contre l'héparine et le facteur de plaquette 4. Mots-clés: Arthroplastie de hanche - Réexposition - Thrombocytopénie
    Notes: Summary The heparin-induced thrombocytopenia type II is a rare but important drug related complication associated with thrombocytopenia and thrombosis. We report on a patient with elective revision of the total hip arthroplasty. Preoperatively for nineteen days, the patient received unfractionated heparin 5000 IU three times daily for thromboprophylaxis. Postoperatively the patient developed a platelet drop from 236000/μl to 69000/μl an iliac vein thrombosis and pulmonary embolism. In assumption of heparin induced thrombocytopenia anticoagulation was switched to danaparoid-sodium subcutaneously. Platelet count rised to normal values while three days. Because of a negative heparin-induced platelet aggregation assay, anticoagulation was switched to a PTT controlled high dose intravenous unfractionated heparin. Two days after re-exposition to heparin platelet counts dropped to 34000/μl blood. The patient died 12 days after readministration of heparin due to respiratory and circulatory failure. Postmortem analysis of serum revealed positive heparin/platelet factor 4 IgG-antibodies.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Copenhagen : Munksgaard International Publishers
    Allergy 54 (1999), S. 0 
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background: Cutaneous heparin-induced allergic reactions to subcutaneous heparin may begin 2–5 days after administration. The relation of the delayed-type hypersensitivity and a systemic immunologic response is controversial. The present investigation aimed to analyze the occurrence of thromboembolic complication, pathologic heparin-induced platelet activation (HIPA), and the presence of circulating heparin-induced IgG in patients with heparin-induced skin reactions. Methods: Intracutaneous tests, HIPA assay, and heparin-heparin IgG antibodies were performed in nine patients with heparin-induced skin lesions. Results: Six of eight patients showed positive intracutaneous tests to heparin and to four low-molecular-weight heparins. Three of six heparin-positive patients presented hypersensitivity to a heparinoid, too. Two of three patients had a positive HIPA test and elevated heparin-induced IgG antibodies. Both patients developed complications presenting as heparin-induced skin necrosis or arterial thrombosis. Two of nine patients were treated with danaparoid, 4/9 patients received r-hirudin, and 1/9 received oral coumarin. In 2/9 patients, anticoagulant therapy was stopped, but these patients will receive r-hirudin if indicated. Conclusions: On the basis of the coincidence of local and systemic hyperreactivity to heparin and danaparoid, patients with heparin-induced skin lesions should receive r-hirudin, a nonheparin compound, for anticoagulant treatment.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Hautarzt 48 (1997), S. 852-864 
    ISSN: 1432-1173
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Lerninhalte Der Wert der Thromboembolieprophylaxe in der perioperativen Medizin und in der inneren Medizin ist eindeutig belegt. Eine Unterlassung der Prophylaxe bei Patienten mit erhöhtem Thromboembolierisiko stellt einen Behandlungsfehler dar. Die Therapie der akuten tiefen Beinvenenthrombose muß stationär erfolgen. Die subkutane Verabreichung von konventionellem Heparin in hoher Dosierung und aPTT-adjustiert ist der kontinuierlichen intravenösen Dauerinfusion gleichwertig. Subkutanes hochdosiertes niedermolekulares Heparin ist möglicherweise zur Therapie der frischen tiefen Venenthrombose dem konventionellen Heparin überlegen. Die Heparin-induzierte Thrombozytopenie Typ II ist eine seltene aber schwerwiegende Nebenwirkung. Maßnahmen zur Früherkennung dieser Nebenwirkungen gibt es nicht. Die Therapie besteht in einem Wechsel der Antikoagulation auf nicht heparinhaltige Antikoagulantien.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Der Internist 40 (1999), S. 885-893 
    ISSN: 1432-1289
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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