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Chemotherapy- General Guidelines
Chemotherapy- General Guidelines
Chemotherapy- General Guidelines
Chemotherapy- General Guidelines
Chemotherapy- General Guidelines
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CHEMOTHERAPY- GENERAL GUIDELINES
Chemotherapy- General Guidelines
Dr Ira Shah
M.D, DCH(Gold Medalist), FCPS, DNB
Edited by Dr. Bharat R Agarwal
Consultant Pediatric Hematologist and Oncologist.


Q. How do you monitor a patient on chemotherapy?

A. Most of the drugs depress the bone marrow. The bone marrow function can be assessed by doing the blood cell counts (RBC counts, Hemoglobin, Platelet count, white cell count etc). The blood counts may fall at any time during the treatment or soon after that (usually about a week following intensive regimes). Blood counts should be checked ideally every day during intensive treatments and once in a week during maintenance treatments. Usually, the drugs are given only if the absolute neutrophil count is above 1000/cumm (some centers take 1500/cumm as the lower limit) and platelet count above 100,000/cumm. However, during induction phase in Acute leukemia, treatment should continue as far as possible to prevent the inhibitory effect of the blast cell on the normal cell population in the bone marrow.

Q. How do you deal with a patient with excessive vomiting due to chemotherapy?

A. Most chemotherapeutic agents produce vomiting for about 24 hours or a little longer. The various anti-emetics used are :
  • Metaclopramide
  • Dexamethasone
  • Ondansteron
Antiemetic therapy should begin before the chemotherapy starts and not after the patient has started vomiting.

Q. How do you manage extravasation while giving these agents intravenously?

A. Ideally for intravenous injection, a veinflon or a butterfly needle should be used. Metacarpal veins on the dorsum of the hand are usually preferred. Bruised and inflamed areas should be avoided. Each vein should be tested with normal saline before injecting chemotherapy and should be well flushed after administration.

If there is any leakage of vesicant drugs into the tissue, these will be severe necrosis and ulceration. Extravasation should be suspected if :
  • Swelling arises at the site of the needle.
  • The patient complains of a sharp stinging or burning sensation around the needle or cannula site.
  • No blood is obtained with pull on the syringe.
  • Resistance is felt on the plunger of syringe during bolus administration.
  • Free flow of fluid is absent if an infusion is in progress.
If these signs are present, then stop administration immediately. Withdraw any solution by pulling back on syringe. Remove the needle. Cover site with icepack. Inject hydrocortisone or dexamethasone around the entire area twice daily until all redness disappears. If very severe, then fasciotomy may be required.

Q. Who should give these chemotherapeutic agents?

A. Cytotoxic agents should not be prescribed by physicians inexperienced in their use. It should be given by specialized pediatric oncologists at pediatric oncology centres.

Last created on 13-07-2001
Last updated on 01-07-2006

 
 
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