Tuesday, September 13, 2011

Why Chemotherapy Is Given In Cycles

Chemotherapy attacks cells that are in the process of dividing. So, any resting cells are not killed. Cancer cells that were resting during the 1st treatment could be dividing and attacked during the 2nd or subsequent treatments. This is the reason chemotherapy is a cyclical process of administering a combination of different chemotherapy drugs designed to attack cells at different stages of cell division.

The fact that chemo drugs kill dividing cells helps explain why chemotherapy causes so many negative side effects. It attacks healthy body cells that are constantly growing and dividing, such as the skin, bone marrow, hair follicles, and lining of the digestive system. These tissues have dividing cells that are continually damaged throughout the course of repeated chemotherapy treatments. The current standard for chemotherapy treatment of breast cancer is 6-cycles spaced 21-days apart. Denise's first cycle was August 24, 2011. The second is tomorrow.

1 comment:

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