Medical Abbreviations

A brief guide to abbreviations that are used when discussing Protein S Deficiency:

• APA - Antiphospholipid Antibodies
• APC - Activated Protein C
• aPTT - Activated Partial Thromboplastin Time
• PTT - Partial Thromboplastin Time
• CVI - Chronic Venous Insufficiency
• Dx - Diagnosis
• DIC - Disseminated Intravascular Coagulation - complication of septic shock in which endotoxin induces systemic clotting of the blood
• DVT - Deep Vein Thrombosis - blood clotting in the veins of the inner thigh or leg
• FVL - Factor V Leiden, the commonest hereditary condition that can cause thrombosis
• HAT - Hospital Acquired Thrombosis
• HRT - Hormone Replacement Therapy
• INR - International Normalized Ratio
• IV - Intravenous
• LMWH - Low Molecular Weight Heparin, e.g. Lovenox or Fragmin
• PCD - Protein C Deficiency
• PE - Pulmonary Embolism - blood clot in the pulmonary artery of the lung
• PSD - Protein S Deficiency
• PT - Prothrombin Time
• PTS - Post Thrombotic Syndrome
• SQ - Subcutaneous
• STP - Superficial Thrombophlebitis
• TIA - Transient Ischaemic Attack - a temporary paralysis, numbness, speech difficulty or other neurologic symptom that starts suddenly and recovers within 24 hours (typically resolves over several hours).
• VTE- Venous Thromboembolism

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