This is when a cancer is given medical treatment through oral and injectable cancer drugs, and is called “chemo” in short. Chemotherapy drugs act throughout the body as against surgery or radiation which act on only a specifically affected part of the body.
The Cost Estimate and Duration mentioned below will be the cost and duration per cycle.
Chemotherapy can be the only treatment modality for a certain cancer, or it is given BEFORE surgery or radiation to shrink the size of the tumour (neoadjuvant therapy). It is also used AFTER surgery or radiation to kill remnant cancer cells in the body (adjuvant therapy). It is also used with other treatment methodologies in case of cancer recurrence.
Most cancers needing chemotherapy have set drug treatment protocols (based on clinical trials), and sometimes, in case of cancer variants, new drugs maybe added or deleted from these protocols. Other considerations while selecting the right chemo treatment regimen are the patient age, general health, type of cancer, staging, co-morbidities, and previous cancer treatment (if any).
Usually, chemo drug doses are measured based on the body weight or the body surface area of the patient. Dosages differ in children and adults and this is also adjusted based on older age group, nutritional status, other medications being taken, other adjuvant treatment, White Blood Cell counts, any other end organs affected viz. kidney and liver, etc. Chemo is given in cycles of combination drugs and the number of cycles depends on the type and severity of the cancer. The duration between the cycles is given to ensure the recovery of the normal cells in the body from the toxic effect, as well as to minimise side effects.
Chemotherapy side effects
Chemotherapy also damages fast multiplying normal cells (viz. blood forming bone marrow cells, hair follicles, cells in the digestive tract and reproductive system) throughout the body, causing side effects and post treatment sequelae. Chemo can also affect the heart, kidneys, bladder, lungs, and nervous system.
The common side effects are:
Every person does not react to chemotherapy in the same way, and drugs are routinely administered during chemo to avoid these side effects, and there are other treatments like acupuncture, acupressure, natural remedies, homeopathy, etc that can alleviate the symptoms.
Chemotherapy drug interactions
Chemotherapy drugs can interact with routine medication being taken for co-morbidities, multi vitamins, as well as nutritional supplements. Some common examples
What symptoms to look out for?
If the patient gets high fever, sudden bruising or bleeding, rash or allergic itches or throat swelling, rigors, pain in injection site, blood in urine, shortness of breath, or vomiting and diarrhoea, then the treating doctor should be contacted immediately for advice and treatment.
It targets cells that grow and divide quickly, as cancer cells do. Unlike radiation or surgery, which target specific areas, chemo can work throughout your body. But it can also affect some fast-growing healthy cells, like those of the skin, hair, intestines, and bone marrow. That’s what causes some of the side effects from the treatment.
That depends on:
You may have chemotherapy in “cycles,” which means a period of treatment and then a period of rest. For example, a 4-week cycle may be 1 week of treatment and then 3 weeks of rest. The rest allows your body to make new healthy cells. Once a cycle has been planned out, it’s better not to skip a treatment, but your doctor may suggest it if side effects are serious. Then your medical team will likely plan a new cycle to help you get back on track.
How often and for how long you have chemotherapy depends on the type of cancer you have and the drugs that are used. You will usually have a number of treatment cycles, and these may be daily, weekly or monthly.
Often people have chemotherapy over 6-12 months, but it’s possible to have it for a shorter or longer period. Maintenance chemotherapy (to prevent the cancer coming back) and palliative treatment (to control the cancer or relieve symptoms) may last many months or years.
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