31. Smoking, clotting abnormalities and first pregnancies are associated with impaired flow. 32. Both groups took warfarin, a drug that keeps blood from clotting . 33. Should patients be switched to other anti-clotting drugs? 34. Blood oozes into the space between brain and skull, eventually clotting . 35. The blood started clotting and later I had a stroke. 36. The substance thickens the blood, producing clotting and possible heart attacks. 37. And clotting cells in the bloodstream mistake these for the real thing. 38. The von Willebrand factor promotes clotting by causing platelets to stick together. 39. Currently, hospitals give patients intravenous inhibitors to prevent clotting . 40. Currently, hospitals give patients intravenous drugs to prevent clotting .
