In treating cancer, the primary purpose of administering drugs according to a protocol or regimen of several drugs at a time is:
a. there is a more pronounced effect of the drugs on the cancer than if the drugs were used alone.
b. the drugs have different side effects that counteract each other, thereby decreasing toxicity.
c. since there is no definitive cure for cancer, it is best to use several at once to try to find one that will work.
d. this type of intense treatment gets the toxicities over in a shorter period of time than giving the drugs sequentially.
ANS: A
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A Correct: This increases the effectiveness of therapy and decreases the risk of cancer cells becoming resistant to therapy.
B Incorrect: This is not true as stated.
C Incorrect: This is not the rationale for combination therapy.
D Incorrect: This is not the rationale for combination therapy.
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