Feeding Tubes (PEG Tubes) During Head & Neck Treatment

Radiation to the head and neck inflames and ulcerates the lining of the mouth and throat. Chemotherapy alongside it makes that worse. Symptoms usually start one to two weeks in, build through treatment, then begin to improve about two to four weeks after the last session. At the worst of it, eating can be slow, unpleasant or impossible. Dry mouth, thick ropey saliva, loss of taste and pain on swallowing all play a part.

The consequence teams worry about is not hunger. It is weight loss, dehydration, hospital admission and unplanned treatment breaks. Stopping radiation partway through undermines the whole point of doing it.

Nasogastric (NG). A thin tube through the nose into the stomach. It needs no procedure and no sedation. It is easy to place and remove. It is generally used when nutrition support is expected for only a few weeks. The downsides: it is visible, it irritates the nose and throat, and it sits in the throat you are already trying to protect.

Gastrostomy (PEG or radiologically placed). This goes through the abdominal wall into the stomach, usually endoscopically under sedation. It hides under clothing and is more comfortable long term. Its wider bore blocks less often. It is the usual choice when support is expected for months.

Placement is not risk-free. Reported complication rates within 30 days sit at roughly 5 to 15 percent, most of them minor; major complications are much less common, in the region of 1 in 100 to 3 in 100. Some of these problems need a hospital visit to sort out.

Some centers place a tube before treatment starts. That is called prophylactic. Others wait until it is clearly needed, which is called reactive. The evidence does not decisively favor either. A systematic review of 22 published series found that placing a tube in advance reduced the number of patients who became malnourished, and was linked to better quality of life at six months, but average weight loss afterwards looked much the same either way. Placing it in advance was also associated with staying tube-dependent for longer.

In the same review, the things that tracked with malnutrition in people who did not have a tube placed in advance were older age, how much weight had already been lost before treatment, and the radiation dose to the swallowing muscles of the throat.

Because the evidence is close, this is properly a shared decision. Your own priorities legitimately carry weight.

This is the part most easily lost. Swallowing muscles that go unused stiffen. Scarring can narrow the throat, sometimes for good. Ask to see a speech-language pathologist before treatment starts. They teach exercises, usually done three times a day: effortful swallow, tongue-hold, Mendelsohn maneuver, and jaw and tongue range of motion. They also track which textures stay safe as treatment goes on.

A tube may supply most of your nutrition. Even then, small amounts by mouth protect long-term function, if your SLP says it is safe. A tube is not a reason to stop swallowing. It is what makes it possible to keep swallowing without having to live on it.

A dietitian sets your calorie, protein and fluid targets, and picks the formula. Feeding is given in one of two ways. Bolus doses go in several times a day through a syringe. Or a pump runs continuously, often overnight, so your days are free. Medications may need liquid or crushed forms, with water flushes before and after to stop blockages.

Site care is straightforward. Keep it clean and dry. Watch for redness, leakage or overgrown granulation tissue. Before you leave the hospital, ask what to do if the tube falls out. The tract can close within hours, so this is a same-day problem. Knowing the number to call saves a bad night.

Most tubes here are temporary. Removal is considered when your weight is stable and you are meeting your needs by mouth. Removal itself is quick and usually done in clinic.

Accepting a feeding tube is a way of protecting the treatment. The curative plan depends on full-dose radiation delivered on schedule. Dehydration and weight loss are among the commonest reasons that schedule slips. People often describe dreading the tube. Then, within a week or two of the hardest stretch, they are relieved it was there.

• Call 911 or go to an emergency department if you start coughing or choking during or after a feed and cannot get your breath. Formula reaching the lungs is the emergency this setup is designed to avoid.
• Call your care team the same day if the tube comes out and you do not know how to put it back. The tract can close within hours, so this cannot wait until tomorrow. Bleeding from the site, a belly that is hard and swollen an hour after a feed, or worsening pain also belong in this group.
• Call your care team within a day or two if the tube blocks, formula leaks around it, the skin at the site turns red and sore, or you get diarrhea after feeds. Do the same if you taste feeding solution in your mouth, or if swallowing has got harder since your last speech therapy visit.

• MedlinePlus — Gastrostomy feeding tube (PEG): discharge instructions
• NCI — Nutrition in Cancer Care (PDQ) patient version
• NCI — Head and Neck Cancer information
• StatPearls — Percutaneous Gastrostomy and Jejunostomy (complication rates)
• Prophylactic versus reactive gastrostomy tube placement in advanced head and neck cancer: a systematic review (Oral Oncology, 2018)