Chemotherapy II, a Primer

Chemotherapy Counting. Thought you might like an explanation of some of the terms/numbers we use when talking about Kevin's treatment. The terminology used by the oncologist made a lot more sense to me once I researched the whole idea of treatment "cycles."

Chemotherapy is usually counted in "cycles" which include treatment and a rest period. More about the treatment/rest theory on another day.

In Kevin's treatment, a cycle consists of 2 treatments, each two weeks apart. So he has a treatment period of Monday to Wednesday (his chemotherapy drugs are delivered over 48 hours--an IV drip consisting of 2 chemotherapy drugs at the clinic which takes about 2 hours, a "push" (larger dose injected through the IV over 5 minutes) of another chemotherapy drug, then 46 hours of the same drug infused through the portable pump). Then the infusion pump is disconnected and his body gets 11 days to recover. He has another 48 hours of chemotherapy drugs, 11 days to rest and the cycle is complete.

So a cycle is, roughly, a month for Kevin. More precisely, 28 days, 4 weeks, 2 chemotherapy treatments.

The cycles are recorded like this:
Cycle 1-1 (first treatment)
Cycle 1-15 (second treatment)

Cycle 2-1 (third treatment)
Cycle 2-15 (fourth treatment)

Cycle 3-1 (fifth treatment)...

A common plan for rectal cancer treatment, after surgery, is

2 cycles of chemotherapy (4 treatments)
1 month of no treatment (recovery)
5 to 8 weeks of daily radiation with continuous chemotherapy (through the infusion pump). "Continuous" can mean 5 days a week on the pump or, literally, 7 days a week on the pump, non-stop for the entire 5 - 8 week period--the oncologist decided which way to go.
The radiation period is given a little vaguely on purpose. There is a total amount of treatment that will be given. That total may have to be given in smaller increments depending on how his body reacts.
1 month of no treatment (recovery)
2 cycles of chemotherapy (another 4 treatments)

Something in the neighborhood of an eight month time span (5 to 6 months of active treatment with 2 months of recovery sandwiched inside), not allowing any periods where treatment is delayed because of illness or reactions.

Cancer has expanded our vocabulary. I'm keeping a growing list of word and definition--a cancer glossary--which I'll post another time.

I like lists. A list is almost as good as a plan.