Hemostasis Laboratory

Saint-Étienne, France

Hemostasis Laboratory

Saint-Étienne, France
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Although regular sports activities decrease the risk of venous thromboembolism (VTE), VTE cases have been observed among professional and amateur athletes practicing various disciplines. The authors describe a case of a 25-year-old-woman in whom calf pain, as popliteal vein thrombosis manifestation - preceding pulmonary embolism, occurred after she took up spinning, a popular form of indoor cycling. There was no history of leg injury. In hemostasis work up, factor V Leiden mutation and acquired low antithrombon activity related to oral contraceptives use, were found. Strenuous exercise in an untrained woman might augment prothrombotic hemostasis profile. Vigorous cycling in standing position in the last phase of spinning, seems to be most unfavorable for patients with high VTE risk.


Mathieu S.,Nimes University Hospital Center | Crampe C.,Hemostasis Laboratory | Dargaud Y.,Research Unit on Hemophilia | Dargaud Y.,Clinical Hemostasis Unit | And 7 more authors.
Blood Coagulation and Fibrinolysis | Year: 2015

Severe hemophilia A is an X-linked bleeding disorder. Immune tolerance induction (ITI) is the best strategy of treatment when patients develop inhibitors. The objective is to illustrate the benefit of a high-purity human factor VIII/von Willebrand factor (VWF) concentrate (Octanate) in the management of ITI. We also wanted to raise the potential interest of laboratory assays such as thrombin-generation test (TGT) and epitope mapping. Two patients were treated during ITI, first with a recombinant FVIII and then with plasma-derived factor VIII without success, and, finally, with Octanate. Bypassing agents were used based on the results of TGT. Epitope mapping was performed during ITI therapy. These observations suggest the potential contribution of Octanate in the management of ITI in difficult cases. The use of bypassing agents can be necessary in prophylaxis or to treat bleedings, and may be guided by TGT results. Epitope mapping is used to describe the inhibitor. This article shows a decrease of the inhibitor directed against the C2 domain after initiation of Octanate. A high-purity human factor VIII/von Willebrand factor concentrate (Octanate) may be a valuable therapeutical option for ITI therapy. TGT and epitope mapping could be of help in the management of ITI. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.


Elikowski W.,Szpital Im. Jozefa Strusia W Poznaniu | Malek M.,Szpital Im. Jozefa Strusia W Poznaniu | Anocha M.,Szpital Im. Jozefa Strusia W Poznaniu | Anocha M.,Lords Transfiguration University Hospital | And 6 more authors.
Polski Merkuriusz Lekarski | Year: 2013

Stress-induced cardiomyopathy is characterized by transient regional left ventricular (LV) dysfunction that may involve, in different forms, midventricular, apical or basal segments. The authors describe a case of a 41-year-old woman with reversible, but global LV systolic dysfunction, complicated with apical thrombi. Clinical symptoms of dilated cardiomyopathy were preceded by persistent stressful workplace conditions. Ischemic, inflammatory, metabolic and endocrine causes of the disease were excluded. After 6 weeks, complete recovery of LV function in echocardiography and normal cardiac magnetic resonance imaging were observed, despite only modest doses of ramipril, carvedilol and diuretics. Six months later, as a result of another episode of emotional stress, she was hospitalized for typical takotsubo cardiomyopathy. Reversible global LV hypokinesis may be an atypical variant of stress-induced cardiomyopathy.

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