10.4 Managing Peritubular Skin: Crusting, Cauterization & Stabilization
Key Takeaways
- Blueprint statement 030301 pairs peritubular skin management with three named techniques — crusting, cauterization, and stabilization — and a complete answer uses all three rather than one.
- Crusting builds an absorptive, adherent layer on weeping skin by alternating stoma powder with a no-sting alcohol-free barrier film, repeated two or three times, and it is the foundational technique for any moist peritubular site.
- Ointments, pastes containing alcohol, and petrolatum-based products defeat adhesion; skin that must hold a dressing or pouch is prepared with a film, not a cream.
- Silver nitrate is applied only to hypergranulation, held briefly, and kept off intact skin, because it burns healthy epidermis and can create the very wound it was meant to treat.
- A peritubular skin plan that omits stabilisation will fail, because ongoing tube movement re-injures the site faster than any topical agent can heal it.
Managing Peritubular Skin: Crusting, Cauterization & Stabilization
Quick Summary: The wording of blueprint statement 030301 — "managing peritubular skin and/or complications (e.g., crusting, cauterization, stabilization)" — is a checklist. Exam items reward the option that combines a moisture strategy, a tissue strategy, and a mechanical strategy. Options that fix only one of the three are the plausible distractors.
Assessing the Peritubular Site
Before treating, characterise what you are looking at. Four patterns recur:
| Appearance | Most likely cause | Priority intervention |
|---|---|---|
| Uniform erythema and denudation matching the leak pattern | Chemical injury from effluent | Contain the effluent; crusting |
| Erythema with satellite papules and pustules, itching | Candidiasis under an occlusive dressing | Antifungal powder (not cream) plus moisture control |
| Skin stripping in the shape of the removed dressing | Medical adhesive-related skin injury | Silicone-based dressing, adhesive remover |
| Red friable collar rising above skin level | Hypergranulation from movement and moisture | Stabilise, then cauterise |
Two of these four have a mechanical rather than a topical answer, which is why the assessment step matters.
Crusting, Step by Step
Crusting is the single most transferable technique in ostomy nursing, and it works identically around a tube and around a stoma. Its purpose is to convert a weeping, non-adherent surface into a dry, tacky one that a dressing or pouch can grip.
- Cleanse the area with water and gauze. Avoid soaps containing emollients, moisturisers, or oils, all of which leave an adhesion-blocking residue.
- Dry thoroughly by patting or with a cool air setting.
- Dust the denuded, moist areas with stoma powder — a pectin, karaya, or carboxymethylcellulose hydrocolloid powder. Brush away any powder sitting on intact skin; powder on dry skin only blocks adhesion.
- Seal with a no-sting, alcohol-free liquid barrier film, applied by dabbing rather than wiping, and allow it to dry fully.
- Repeat steps 3 and 4 two or three times to build layers.
Important: Alcohol-containing barrier films cause severe burning on denuded skin, and a patient who experiences that once will often refuse the technique afterwards. Use a no-sting formulation whenever the skin is broken.
What Not to Put on Peritubular Skin
The most common product error is applying something soothing that destroys adhesion:
- Ointments, creams, and petrolatum leave an oily film. Skin that needs to hold a dressing, a securement device, or a pouch must be film-prepared, not greased.
- Antifungal creams under an adhesive fail for the same reason; use an antifungal powder sealed with barrier film when candidiasis complicates a site that must hold adhesive.
- Antiseptics such as povidone-iodine or hydrogen peroxide for routine site care are cytotoxic to the granulating tissue you are trying to preserve, and are not used for routine peritubular hygiene.
- Gauze packed tightly beneath a bolster wicks effluent against the skin and holds it there, converting an intermittent leak into a continuous chemical exposure. Where a drain sponge is used, it is a single pre-slit layer, changed when saturated.
Cauterization Done Correctly
Silver nitrate is the standard chemical cautery for peritubular hypergranulation. Correct technique is narrow and specific:
- Protect the surrounding intact skin — a barrier film or petrolatum applied to the margin only, well away from anything that must later adhere.
- Moisten the applicator tip, then apply it only to the granulation tissue, with brief, deliberate contact.
- Expect the tissue to turn grey or black; that discoloration is the expected chemical effect, not a burn of healthy skin.
- Treat at intervals — typically once or twice weekly — and reassess rather than applying daily.
- Stop and reconsider if there is no response after two or three applications.
A topical corticosteroid such as triamcinolone is a reasonable alternative or adjunct for a short, defined course, particularly where cautery is poorly tolerated. Both approaches fail without the third component.
Stabilization Is Part of Skin Care
It is worth restating in this context, because it is the element candidates leave out of an answer. Peritubular skin injury has a mechanical cause in most cases: the tube moves, the movement abrades and enlarges the tract, the enlarged tract leaks, and the leak burns the skin. A plan that cauterises the granulation, crusts the denuded skin, and leaves the tube taped loosely to the abdomen will be repeating itself in a week.
PERITUBULAR SKIN PLAN — all three, every time
MOISTURE --> crusting: powder + no-sting film x2-3 layers
TISSUE --> silver nitrate to granulation only, or short-course topical steroid
MECHANICS --> engineered securement, bolster clearance 0.5-1 cm, dressing sized to fit
When Skin Care Is Not Enough
Escalate beyond topical management when the leak is continuous rather than intermittent, when the exposure is enzymatic jejunal or biliary effluent, when dressings require changing more than twice daily, or when the denuded area is expanding despite correct technique. At that point containment moves from a dressing to a pouching system, which is the subject of the next section.
A patient has weeping, denuded skin around a leaking jejunostomy tube. The bedside nurse has been applying a zinc-oxide barrier cream twice daily, but the securement dressing will no longer stick. What should the ostomy nurse do?
Which statement describes correct silver nitrate technique for peritubular hypergranulation?
A peritubular site shows erythema with scattered satellite papules and pustules, and the patient reports intense itching. An adhesive securement dressing must remain in place. Which intervention is most appropriate?
An ostomy nurse crusts a denuded peritubular site, cauterises the hypergranulation, and documents a plan. One week later the site looks identical. Which element was most likely missing from the plan?