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Unexplained thromboembolism. When to suspect antithrombin III, protein C, or protein S deficiency
1Department of Medicine, University of Oklahoma College of Medicine, Oklahoma City 73190.
Patients with recurrent or unusual thromboembolic events may have abnormalities in regulation of hemostasis because of inherited or acquired deficiencies of antithrombin III, protein C, or protein S. A working knowledge of the clotting process and a high degree of suspicion are needed to guide the clinician in this difficult diagnosis. Prompt and appropriate anticoagulant therapy can be lifesaving in these patients.
Patients with recurrent or unusual thromboembolic events may have abnormalities in regulation of hemostasis because of inherited or acquired deficiencies of antithrombin III, protein C, or protein S. A working knowledge of the clotting process and a high degree of suspicion are needed to guide the clinician in this difficult diagnosis. Prompt and appropriate anticoagulant therapy can be lifesaving in these patients.