International normalized ratio: INR is a system for reporting the results of blood coagulation (clotting) tests for patients taking warfarin.
Polycythemia: Characterised by too many red blood cells
Pulmonary embolism: life threatening situation when a piece of this blood clot breaks away (embolus, plural=emboli), moves downstream through the heart into the pulmonary circulation system, and reaches the lung.
Thrombophlebitis: Inflammation of a vein
DVT: Deep Vein Thrombosis
INR: International Normalized Ratio – used for monitoring the dose of warfarin in DVT prophylaxis patients.