This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'All are hypercoagulable states, except : \nSelect and explain. \nA. Protein C resistance, B. Factor V Leiden deficiency, C. Antiphospholipid antibody, D. Polycythemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer is B (factor V Leiden deficiency) Factor V Leiden mutation (or T Factor V Leiden levels) are associated with a hypercoaguable state and not a Factor V Leiden deficiency. Inherited Defective inhibition of coagulation factors Factor V Leiden (resistant to inhibition by activated protein C) - Antithrombin III deficiency (or resistance) - Protein C deficiency (or resistance) - Protein S deficiency (or resistance) - Prothrombin gene mutation (G20210A) Impaired clot lysis - Dysfibrinogenemia - Plasminogen deficiency - PA deficiency - PAI-I excess Unceain mechanism - Homocystinuria Acquired Diseases or syndromes Lupus anticoagulant/anticardiolipin antibody syndrome Malignancy - Myeloproliferative disorder - Thrombotic thrombocytopenic purpura - Estrogen treatment Hyperlipidemia - Diabetes mellitus Hyperviscosity - Nephrotic syndrome - Congestive hea failure - Paroxysmal nocturnal hemoglobinuria Physiologic states - Pregnancy (especially postpaum) - Obesity - Postoperative state - Immobilization - Old stage', 'role': 'assistant'}]