Testing of hemostasis is done for three reasons: to screen for coagulation disorders, to diagnose these disorders, and to monitor therapy. Tests of hemostasis and thrombosis are performed on nearly every patient in the hospital. The bleeding history is the strongest predictor of bleeding risk with any procedure. It is essential that this history includes more questions than just õare you a bleeder?ö A good history for bleeding can be obtained in minutes by asking a few specific questions as outlined in Chap. Bleeding due to coagulation defects is unusual, recurrent, and excessive, but rarely spectacular.
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