10.2 Percutaneous Tube Management Plan: Stabilization, Patency & Skin Care
Key Takeaways
- A tube management plan has three fixed components in the COCN blueprint — stabilization, patency, and skin care — and a nurse who addresses only leakage without securing the tube will see the leak recur within a day.
- External bolsters are set with roughly 0.5 to 1 cm of clearance from the skin; a bolster tightened against the abdomen is the direct cause of buried bumper syndrome and peritubular pressure necrosis.
- Enteral tubes are flushed with 30 to 60 mL of water before and after every feed and every medication, and medications are given separately and in liquid form wherever possible.
- Securement moves the fulcrum of movement away from the skin: an engineered securement device or a catheter-stabilisation dressing outperforms tape, and reduces both peritubular granulation and accidental dislodgement.
- Enlargement of the tract almost never responds to a larger tube; upsizing widens the tract further and worsens leakage, so management targets stabilisation, gastric-emptying support, and containment instead.
Percutaneous Tube Management Plan: Stabilization, Patency & Skin Care
Quick Summary: The blueprint phrases the intervention as "identifying management plan (e.g., stabilization, patency, skin care)." Those three words are the answer stem for most Domain II Task 3 items. When a scenario describes a leaking or painful tube, the correct option almost always addresses stabilisation first, because movement is the upstream cause of both tract enlargement and granulation tissue.
Component 1: Stabilization
An unsecured tube pistons in and out of its tract with every breath, cough, and transfer. That repetitive motion does three things: it mechanically abrades the tract, it stimulates hypergranulation at the exit site, and it progressively widens the stoma-like opening until effluent tracks around the tube.
Setting the external bolster. For a bolster- or flange-retained gastrostomy, the external bolster should sit with approximately 0.5 to 1 cm of clearance from the skin — enough to admit a fingertip or the thickness of a dime. Two failures follow from getting this wrong:
- Too tight compresses the abdominal wall between the internal and external retention devices. The result is ischaemia, pain on feeding, resistance to infusion, and ultimately buried bumper syndrome, in which the internal bumper erodes into the gastric wall.
- Too loose permits the piston motion described above, producing leakage and granulation.
Securement of drains and catheters. For nephrostomy tubes, biliary drains, and surgical drains, use an engineered securement device or a purpose-made catheter-stabilisation dressing rather than tape alone. The goal is to move the fulcrum of movement off the skin and onto the device. A useful bedside test: lift the tubing gently: if the skin at the exit site tents or the tube visibly slides, securement has failed.
Rotation. A traditional PEG with an internal bumper is rotated 360 degrees and advanced-then-withdrawn a short distance during routine care, which prevents the bumper from adhering to the gastric mucosa. Balloon-retained tubes and all jejunal tubes are not rotated, because rotation can migrate a jejunal tip or torque the balloon.
Component 2: Patency
| Situation | Standard practice |
|---|---|
| Before and after each feed | Flush with 30–60 mL water |
| Before and after each medication | Flush with 15–30 mL water, each drug given separately |
| Continuous feeding | Flush every 4 hours |
| Medication form | Liquid preparations preferred; never crush enteric-coated or extended-release tablets |
| Suspected occlusion | Gentle warm water flush with a push-pull technique using a large-bore syringe |
Small syringes generate very high pressure in a narrow lumen. A 60 mL syringe produces lower pressure per unit of force than a 10 mL syringe and is the safer choice for flushing and for attempting to clear an occlusion. Acidic beverages such as cola and cranberry juice are not used to clear enteral tubes: acid precipitates feeding-formula protein and makes the clog worse. Where a chemical declogging agent is ordered, it is a pancreatic-enzyme-and-bicarbonate preparation, not a household acid.
For drainage devices, patency is verified differently — by output trend and character. A nephrostomy that abruptly stops draining, a biliary drain whose bile turns to serous fluid, and a JP whose output ceases while the abdomen distends are all patency failures presenting as changed output rather than as resistance to flush.
Component 3: Skin Care
The peritubular skin plan mirrors peristomal practice, scaled to the volume and chemistry of the leak:
- Cleanse with water, dry thoroughly, and avoid soaps with emollients that block adhesion.
- Apply crusting — stoma powder to denuded skin, sealed with a no-sting alcohol-free barrier film, repeated two or three times — where the skin is moist and weeping.
- Choose the dressing by output: a drain sponge or foam for scant leakage, a superabsorbent or alginate for moderate leakage, and a pouching system once the leak is continuous, caustic, or requires more than two dressing changes daily.
- Reassess stabilisation at every dressing change, because recurrent skin breakdown is nearly always a securement failure wearing a skin-care disguise.
The Upsizing Trap
The intuitive response to a tube that leaks around its edges is to place a larger-diameter tube. This is a classic distractor and is wrong. The tract is already wider than the tube; inserting a larger device stretches it further, and when that tube is eventually removed the tract is larger still. Leakage around a gastrostomy is instead managed by:
- correcting bolster clearance and securement,
- treating the cause of raised intragastric pressure — constipation, delayed gastric emptying, coughing, or excessive bolus volume,
- considering a low-profile balloon device to reduce leverage, and
- containing the effluent with crusting, absorptive dressings, or a pouch.
LEAKING PERITUBULAR SITE — decision order
1. Is the tube stabilised? --> secure first; re-set bolster to 0.5-1 cm
2. Is intragastric pressure high? --> treat constipation, ileus, cough, bolus volume
3. Is the skin already denuded? --> crusting + barrier film
4. Is leakage continuous/caustic? --> pouch it
X. Place a larger tube --> NO. Widens the tract and worsens leakage.
A patient with a gastrostomy tube has persistent leakage around the exit site and denuded skin. The bedside nurse asks whether the interventional radiology team should place a larger-French tube to fill the widened tract. What is the ostomy nurse's best response?
A patient receiving continuous jejunal feeding has a tube that will not flush. Which action is most appropriate?
How should the external bolster of a gastrostomy tube be positioned during routine care?
Which tube may be rotated 360 degrees as part of routine care to prevent the internal retention device from adhering to the mucosa?