Wound Care During Cancer Treatment

"Wound care" during cancer treatment covers at least three separate problems, and the instructions for one can be wrong for another.

A surgical incision follows standard post-op care. A radiation skin reaction happens inside the treatment field and follows rules set by the radiation team. A skin break during low blood counts is mostly an infection problem, and the numbers that matter are lab values and temperatures.

Before you change any dressing at home, ask which of the three you are dealing with. Then ask the nurse to demonstrate the change, watch you repeat it, and hand you the steps in writing.

MedlinePlus publishes a step-by-step home routine for an open surgical wound.

1. Take rings and other jewelry off your hands. Wet your hands under warm running water, pointing down, and wash for 15 to 30 seconds.
2. Loosen the tape carefully. Use a clean medical glove to pull the old dressing off. If it sticks, moisten it first, unless your team told you otherwise.
3. Clean with normal saline or mild soapy water on gauze. Dab gently to lift drainage and dried material.
4. If irrigation was ordered, fill a syringe with saline or soapy water and spray from 1 to 6 inches away, then pat dry.
5. Apply the new dressing exactly as ordered, then wash your hands again.

The list of things to keep away from the wound is just as specific. MedlinePlus says do not use skin cleansers, alcohol, peroxide, iodine, or antibacterial soap, because they damage wound tissue and slow healing. That rules out most of the products people already own.

Skin injury from radiation builds up over the course of treatment. StatPearls notes that the effects are cumulative, so the worst reactions usually appear toward the end of a radiation course, not at the start.

Radiation teams describe severity with the RTOG grading scale:

• Grade 1: faint redness, called erythema, or dry flaking, called dry desquamation.
• Grade 2: moderate to brisk redness with patchy moist desquamation, meaning weeping skin, limited to skin folds, sometimes with swelling.
• Grade 3: moist desquamation outside the skin folds, where minor bumps can cause bleeding.
• Grade 4: skin necrosis, meaning tissue death, or full-thickness wounds, with possible bleeding that starts on its own.

Care inside the field is different from care anywhere else on the body. NCI advises keeping the area clean and dry so it does not become infected. It says to avoid heating pads, ice packs, and bandages on the treatment area, along with products that contain alcohol or fragrance. Bathe in lukewarm water, not hot. Ask the nurse which specific skin products to use, since brands vary by clinic.

When the field becomes painful and wet, that is when the team steps in. NCI notes nurses may prescribe special dressings and antibiotics at that stage. For late fibrosis, meaning stiff scarred tissue months later, StatPearls describes pentoxifylline combined with alpha-tocopherol, and hyperbaric oxygen therapy. Severe non-healing ulcers may need debridement, a split-thickness skin graft, or a free flap.

Chemotherapy can drop the neutrophil count, which is the white cell type that fights bacteria. CDC reports that neutropenia often sets in between 7 and 12 days after chemotherapy, though the timing shifts with the regimen.

During that window, a wound that looked minor becomes the main risk. Classic infection signs can be muted, because the cells that create pus and redness are the ones missing. That is why the temperature threshold does the work instead.

CDC also lists practical skin protection during this window: use unscented lotion to keep skin from drying and cracking, wear vinyl or household gloves when cleaning up after a pet, wear gloves for gardening, and check surgical wounds and port sites for redness, soreness, or swelling.

Ask your team for two numbers before your first cycle: the day your counts are expected to bottom out, and the phone number that is answered overnight.

• Fever. This one is an emergency. CDC states that a fever during chemotherapy is a medical emergency, at 100.4 degrees F, or 38 degrees C, or above. NCI's threshold during treatment is 100.5 degrees F, or 38 degrees C. CDC's neutropenia guidance also flags a 100.4 reading that lasts more than one hour, or a single reading of 101 degrees F or higher. Use whichever number your own team gave you, ring the 24-hour line at once, and if nobody answers within minutes, call 911 or go to an emergency department.
• Bleeding that will not stop after 10 minutes of firm, steady pressure. Do not keep restarting the clock at home. Call 911 or go to an emergency department.
• Do not take a fever reducer first. NCI warns that acetaminophen and similar drugs can mask a serious infection. Call before you take one.
• Drainage that turns thick, tan, green, or yellow, or that smells bad. MedlinePlus describes that as pus.
• Spreading redness, new swelling, or pain that climbs instead of fading. Mark the edge of the redness with a pen and note the time, so you can tell the nurse how fast it moved.
• A wound edge that opens or pulls apart.
• On immunotherapy, a rash that is severe, blistering, widespread, or painful, or any rash involving the eyes or mouth. NCI lists these as reasons to contact the doctor right away.

Keep every supply in one clean bin: gauze, saline, gloves, tape, scissors, and the ordered dressings. Tape a single index card to the lid with the dressing schedule, the refill phone number, the home health nurse's name, and the after-hours line.

Count your supplies on the same day each week. Running out of 4x4 gauze on a Sunday turns a routine change into an emergency department visit. If cost or delivery is the barrier, ask the clinic social worker which supplies the plan covers and whether home health can be ordered.

For related reading, see Practical Help for Caregivers, Managing Medications as a Caregiver, and Palliative Care.

• CDC — Fever During Chemotherapy
• MedlinePlus — Surgical Wound Care: Open
• National Cancer Institute — Skin and Nail Changes during Cancer Treatment
• StatPearls (NCBI Bookshelf) — Radiation-Induced Skin Ulcer
• CDC — Neutropenia and Risk for Infection
• National Cancer Institute — Infection and Neutropenia during Cancer Treatment