In addition, a doctor must know how long a medication stays in the patient's body. This is because patients need to know how many pills to take in a day and at what intervals (24hr, 6hr, etc.). The rate at which medication leaves the body at a rate that can be displayed by a geometric sequence in with rational numbers. As an example, a medication leaves a person at a rate of 1/10 per hour. In effect, a doctor will have to find intervals to administer more medication while trying not giving the patient too much. This is still based on the dose in milligrams for kilogram.
Another way math is used inside medicine is to determine the amount of select blood cells in the body. Take white blood cell (WBC) count as an example. Generally speaking, the normal WBC count is 4,500 to 11,000 WBCs per microliter(mcL) of blood. Given a low or high WBC count a doctor will look into it and decide a course of treatment if possible.
In conclusion, the medical field uses math in a number of ways. Including prescriptions, WBC count, and many more fields than those listed. Math is an invaluable part of the medical system and without it medical practice will be much harder to perform.
Lance Clark