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Blood clots Part 3 (Teacher: Michael)

Fortunately, in many cases correct dosage can be easily found and kept constant. But some patients have prothrombin time which varies very greatly and inexplicably. This means dosage has to be altered frequently.

If there is alarming haemorrhage dose has to be radically changed - and quickly. Possibly, doctor will have to give injection of certain vitamin and then start all over again finding right dose.

There are two things patient and his relatives must remember: never forget appointment for taking of blood sample and never take other drugs without permission. remarkable number of drugs affect prothrombin time very greatly, especially some sedatives and aspirin.

For many sudden crises anticoagulants are extremely valuable - for example, they are used after heart operations. However, decision to use them for very long periods, for instance, after patient has had stroke or coronary attack, is difficult one to make and experts are not always agreed.

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