R-CHOP Chemotherapy

R-CHOP is a form of chemotherapy treatment used in non-Hodgkin’s lymphoma. It derives its name subsequent to the initials of the drugs employed during the procedure. It entails the use of the monoclonal antibody rituximab, and the below stated chemotherapy drugs:

• Cyclophosphamide
• Doxorubicin that has the chemical name –hydroxydaunorubicin
• Vincristine that was initially identified as Oncovin.
• Prednisolone – a steroid.

Rituximab

Rituximab is a monoclonal antibody employed in an attempt to obliterate some types of cancer cells while preserving the functioning of normal cells. They are intended to detect certain proteins that are present on the surface of some of the cancer cells and fasten onto them much alike a lock-&-key mechanism. This locking mechanism elicits the body’s immune system to launch an assault on the cancer cells and could at times lead to the cancer-cells donning self-destructive mode.

Rituximab is used in the treatment of different kinds of B-cell non-Hodgkin lymphoma. It fastens onto CD20 protein that is present on the surface of one of the key forms of normal WBCs or white blood cells or B-cell lymphocytes. It is additionally present on the surface of majority of the anomalous B-cell lymphocytes that crop up in some forms of non-Hodgkin lymphoma. Rituximab functions by assaulting irregular and normal B-cell lymphocytes. The body’s innate restorative mechanism swiftly reinstates any normal white blood cells that are obliterated.

Treatment procedure

R-CHOP is generally administered as a day patient basis, though the foremost treatment might take longer periods of time, hence an overnight stay at the hospital might be required or one could come back the following day.

Prior to commencing on the treatment, the patient would require getting a blood test done either on the very same day or a couple of days ahead of time. The patient would also be seen by the doctor, the specialist nurse or pharmacologist. The druggist would prepare for the patient’s chemotherapy if the outcome of the blood analysis is normal. All of this could consume a few hours.

The nurse would introduce a fine, bendable tube or cannula into a vein either on the hand or arm. This insertion procedure might get slightly painful or discomforting but would not take long. A few individuals are offered chemotherapy via a fine plastic tube that is introduced subcutaneously into a vein close to the collar bone known as the central line. Alternately, chemotherapy might be given via a vein in the arm known as the PICC line.

As the preparations for chemotherapy are done, anti-emetic drugs for averting feelings of sickness are injected via the cannula or the PICC line, however, they could be given as pills.

The preliminary dose of rituximab is gradually infused into the vein over a span of few hours, as few individuals experience allergic reactions due to it. In case one is experiencing a reaction to the infusion, then it could be halted and re-started in a more gradual manner when the symptoms have eased. Overnight hospitalization might be needed for the foremost treatment so that the patient could be kept under observation. The second and subsequent other rituximab doses could be given in a quicker manner and all the subsequent chemotherapy sessions would be an outpatient procedure. Though, the entire dose of the drugs would need 4 hours to be entirely given.

R-CHOP treatment is offered using a combination of injections into the tube of the drip or infusion and by intravenous drips. The foremost prednisolone (pill form) is generally given prior to the rituximab and the patient might be given prednisolone to consume at home.

The intravenous drugs are generally given in the order stated below:

• Rituximab – a clear fluid in a drip bag.
• Doxorubicin – a red coloured fluid is injected into the drip tube.
• Vincristine – a clear fluid given in a small infusion.
• Cyclophosphamide – a clear fluid generally administered as an infusion, though could also be injected inside the drip tube.

After all the drugs have been administered, the cannula would be removed or a cap be put on the line. The patient would be given a set of anti-sickness pills to be taken at home. The patient would be required to take these pills irrespective of feeling ill or not, if it has been medically advised, as some of the medications are more effectual at averting sickness rather than halting it as soon as it has commenced. A course of prednisolone tablets would also be given.

Frequency of Treatment

The doctor might employ the term ‘regimen’, for instance, the R-CHOP regimen while referring to chemotherapy which translates to the entire plan or programme of the particular treatment that the patient might be receiving.

On the foremost day of the treatment, the patient would be given rituximab, doxorubicin, vincristine and cyclophosphamide. On the same day, one would also need to commence on a 5-day course of prednisolone pills. Once the course of tablets has been completed, the patient would have a treatment-free period lasting for 16 days. This concludes what is known as a single cycle of the treatment. Every cycle is made up of 21 days, hence this manner of administering R-CHOP is at times known as R-CHOP 21.

Subsequent to the rest phase, the same treatment is then re-started, that marks the beginning of the subsequent cycle of chemotherapy. Generally, six to eight cycles are given over a span of three to four months which constitutes the line of the treatment.

R-CHOP 14

At times, each cycle of R-CHOP is administered over two weeks that is called as R-CHOP14. The drugs are administered in analogous manner as R-CHOP21, however the rest period is much shorter of just 9 days.

The rest phase in-between treatments is intended to promote the body’s innate recuperation process to heal from any kind of side effects that might has taken place. A shorter rest phase translates to lesser time for the body to heal prior to the commencement of the subsequent cycle of chemotherapy.

One of the major side effects is the depletion in the production of white blood cells in the bone marrow. For thwarting this, the patient would be injected subcutaneously with a drug known as G-CSF (granulocyte-colony stimulating factor). This is a protein form that elicits more white blood cells production in the bone marrow.

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