Which of the following is NOT considered an "acquired" cause of a hypercoagulable state?

Taking Coumadin is an anticoagulant medication, and its primary purpose is to prevent blood clot formation rather than induce a hypercoagulable state. Hypercoagulable states are conditions that increase the risk of thrombosis, often due to underlying acquired factors or inherited disorders.

In contrast, smoking and taking oral contraceptives are both known to contribute to a hypercoagulable state. Smoking causes changes in hemostasis, such as increased fibrinogen levels and altered platelet function, while oral contraceptives can increase the levels of certain clotting factors and reduce the levels of natural anticoagulants, thereby raising the risk for thrombosis.

Temporal arteritis, or giant cell arteritis, is an inflammatory condition that can also be associated with a hypercoagulable state due to the inflammatory processes it involves. This can lead to an increased risk of thrombosis in affected individuals.

Thus, taking Coumadin does not contribute to a hypercoagulable state; rather, it is designed to do the opposite by addressing clotting issues.