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Indications / Contraindications
Indications
- Post-total gastrectomy or esophagectomy: No stomach for G-tube placement; direct jejunostomy is the only percutaneous option
- Gastroparesis or gastric outlet obstruction where GJ tube is not feasible or repeatedly migrates despite multiple attempts
- Gastric cancer with total gastrectomy
- Crohn's disease with gastric involvement precluding gastric access
- Recurrent GJ limb migration after 2+ attempts with appropriate technique
- Need for simultaneous complete gastric decompression AND post-pyloric feeding: Separate G-tube for drainage + J-tube for feeds
Direct jejunostomy vs. GJ tube:
GJ tube = gastrostomy with jejunal extension (via pylorus). Jejunostomy = direct puncture of jejunum through abdominal wall. The J-tube is more technically demanding, requires T-fastener fixation of bowel to wall, and carries higher dislodgement risk. Consider GJ tube first if gastric access is available.
Contraindications
- Non-fixed small bowel: Loops floating freely without a fixed loop accessible to anterior abdominal wall — cannot maintain stable access without fixation; high fistula/injury risk
- Prior multiple abdominal surgeries with extensive adhesions: Bowel loops matted/distorted — high fistula/injury risk; surgical consult before proceeding
- Acute small bowel obstruction (distended loops — perforation risk from access)
- Severely compromised bowel: Radiation enteritis, ischemia, extensive Crohn's disease of target loop
- Ascites (relative — high leak risk around tube; consider paracentesis first if large volume)
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Pre-Procedure Checklist
CT planning — mandatory. Identify a fixed loop of proximal jejunum in the left upper quadrant, ideally 15–30 cm past the ligament of Treitz. Jejunum should be close to the anterior abdominal wall with no bowel loops, vessels, or organs in the access path. Mark the target loop on the skin with a radiopaque marker on CT before going to fluoroscopy.
T-fastener fixation plan. Jejunostomy tubes REQUIRE T-fastener anchoring of the jejunum to the abdominal wall — even more critical than for gastrostomy, because small bowel is highly mobile. Plan 3–4 T-fasteners around the tube site. If T-fastener kit is not available: do not proceed.
Oral contrast 12–24h before. Administer oral or NG dilute barium or gastrografin — fills small bowel loops and makes them visible on fluoroscopy. Critical for loop identification when not using CT-guided access.
Antibiotics: ceftriaxone 1g IV 1 hour before procedure.
Labs. CBC, coagulation (INR <1.5, Plt >50K for SIR Cat 2).
Sedation plan. Moderate sedation or general anesthesia depending on patient cooperation and complexity. CT-guided access requires patient breath-holding; plan accordingly.
Tube sizing. 14–16 Fr jejunostomy tube (smaller caliber than G-tube — jejunum tolerates less distension). Pigtail-retained or small balloon-retained (3–5 mL max).
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Relevant Anatomy
Proximal Jejunum
- Origin: Ligament of Treitz (LOT) at L2, left of spine
- Target zone: 15–30 cm past LOT, left upper quadrant — most accessible, closest to anterior wall
- Wall thickness: ~3 mm (normal) — thinner than colon, less muscular, more prone to tearing with aggressive T-fastener tension
- Blood supply: Jejunal branches of SMA — right-sided approach through mesenteric arcades; rich vascularity in arcades between loops. Avoid traversing mesenteric fat between loops.
- Access direction: Through left anterior abdominal wall, angled toward LOT region
Danger Structures
- Mesenteric vessels between loops: Do NOT traverse the mesenteric fat between adjacent small bowel loops — the SMA branches are here. Access through the antimesenteric bowel wall directly.
- Interposed small bowel loops: Other loops between skin and target loop are common. CT is the most reliable way to plan a safe path.
- Colon: Check CT for position of descending/sigmoid colon in LUQ. Same danger as gastrostomy — do not traverse.
- Left kidney: In some patients, kidney may be near the planned access path in LUQ — review CT.
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Technique
CT-guided access + fluoroscopic tube placement + community cards
Supplies
CT guidance OR fluoroscopy + oral contrast prep
21G Chiba needle (initial access)
T-fasteners × 3–4
0.018" wire (initial small-bore access)
Coaxial access system (0.018" → 0.035" conversion)
0.035" Amplatz stiff wire
14–16 Fr jejunostomy tube (pigtail or small balloon)
Dilators (serial dilation to tube size)
Dilute Omnipaque contrast
Suture + external fixator
ChloraPrep · Sterile drape · 1% lidocaine
Steps
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Small bowel opacification
Confirm oral/NG contrast (given 12h before) has opacified proximal jejunal loops. Under fluoroscopy, identify opacified loops in the LUQ. If loops not well opacified: repeat oral contrast and wait. CT with IV and oral contrast provides optimal loop identification.
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Target loop identification
Under fluoroscopy (or CT), identify the target loop: proximal jejunum (15–30 cm past LOT), closest to anterior abdominal wall, with no interposed bowel or vessels in the access path. Mark skin site with metallic marker. Confirm in two planes. CT-guided approach is more reliable than fluoroscopy alone for this step.
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T-fastener jejunopexy
CRITICAL STEP. Place 3–4 T-fasteners in a triangle or square pattern around the intended tube site to anchor the jejunum to the anterior abdominal wall. Same technique as gastropexy for gastrostomy. Use gentle tension — jejunal wall is thin and tears more easily than gastric wall. Confirm each T-fastener is intraluminal with small contrast injection through the needle before deploying.
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Initial needle access
Under fluoroscopic guidance, advance a 21G needle through the skin → through the center of the T-fastener square → into the target jejunal loop. Confirm intraluminal position with small contrast injection: see mucosal fold pattern (valvulae conniventes), contrast flows freely distally, no peritoneal extravasation.
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Wire advancement
Advance 0.018" wire through the needle, coiling it in the jejunal lumen. Use coaxial access system to upsize to 0.035" wire. Advance wire distally in the jejunum as far as possible to maximize support for tube advancement.
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Serial dilation
Dilate the tract serially to the target tube size (14–16 Fr). Dilation of jejunum requires care — small bowel wall does not distend as readily as stomach. Steady, controlled dilation without excessive force.
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Tube placement
Advance 14–16 Fr jejunostomy tube over Amplatz stiff wire into the jejunal lumen. Form retention mechanism: pigtail (coil in lumen) OR small balloon inflation with 3–5 mL sterile water only. Do NOT use a standard large G-tube balloon — jejunum cannot accommodate 10–15 mL inflation without injury.
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Confirmation
Inject contrast through the tube → confirms intraluminal position, contrast flows distally in small bowel (NOT proximally into stomach). No peritoneal extravasation. Confirm on fluoroscopy in two views. Withdraw wire under fluoroscopic observation.
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Secure
Suture tube to skin at two points. Apply external fixator disk. Label tube clearly as J-tube (feeds only — no gastric drainage). Give nursing staff explicit written instructions for tube care and dislodgement protocol.
Sign in to view and create community cards
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Troubleshooting
Problem
Small bowel not visible under fluoroscopy (poor opacification)
Likely cause: Contrast not given or not enough transit time; patient NPO for too long causing collapsed loops.
Next step: Repeat oral/NG contrast and wait at least 1 hour. Consider CT-guided approach with real-time CT fluoroscopy for access — CT does not rely on bowel opacification for loop visualization. Do not attempt needle access on non-visible loops.
Problem
T-fasteners tear through jejunal wall (thin wall)
Likely cause: Jejunal wall is thin (~3 mm) and less tolerant of aggressive tension than the gastric wall.
Next step: Apply gentle, graduated tension only — not sharp pull. Place fasteners closer together around tube site to distribute load. Use smaller-gauge T-fastener system if available. If a fastener tears through: place a replacement. A torn T-fastener without secure replacement requires reassessment of whether sufficient fixation remains.
Problem
Tube won't coil or retain in jejunum (small lumen)
Likely cause: Small bowel lumen is narrower than stomach; pigtail may not form a full coil.
Next step: Partial pigtail formation is acceptable if at least 4–5 cm of tube is within the lumen. Balloon-retained tube (3–5 mL only) provides reliable retention without requiring full pigtail. Confirm retention by gentle traction test under fluoroscopy.
Problem
Peritoneal contrast leak during confirmation
Likely cause: Needle traversed completely through the jejunum, or the jejunum was not adequately fixated and pulled away from the abdominal wall during access.
Next step: Stop injection immediately. Small amounts of water-soluble contrast in the peritoneum: monitor closely for 4–6 hours (pain, fever, peritoneal signs). Significant free contrast with symptoms: surgical consultation immediately. Tube should be withdrawn from peritoneum if not intraluminal; do NOT inject feeds through a peritoneal tube.
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Complications
Serious / Immediate
- Small bowel perforation (most serious) — peritonitis; urgent surgical consultation if significant extravasation or free air develops; prevention: T-fasteners, careful needle technique
- Tube dislodgement in immature tract (<4–6 weeks) — highest-risk complication; fistula tract not established → free jejunal perforation possible with any attempt at blind reinsertion. Return to IR immediately. Educate patient and nursing extensively about this risk.
- Jejunal volvulus (rare) — tethering of a mobile jejunal loop by T-fasteners or tube can rarely cause torsion; presents as small bowel obstruction
Delayed / Minor
- Peristomal infection (same as gastrostomy)
- Tube clogging — small lumen clogs with feeds, thick medications, or inadequate flushing; use liquid or finely crushed medications only
- Fistula formation at tube site
- Aspiration (rare — post-pyloric position greatly reduces risk; no gastric residual)
- Buried bumper (rare with small balloon or pigtail retention)
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Post-Procedure Care
Immediate (0–48h)
- KUB + water-soluble contrast study at 24h: Confirm J-tube position, no leak, tube in small bowel lumen. Mandatory before starting feeds.
- Start feeds SLOWLY: Begin at 10–20 mL/hr. Advance by 10 mL every 12h. Small bowel is less distensible than stomach — rapid advancement causes cramping, diarrhea.
- Monitor for pain, fever, peritoneal signs
- Keep patient supine or semi-recumbent — minimize tube tension and movement for first 24h
Ongoing Care
- Flush: 30 mL water q4h and before/after each medication. Small bore = clogs easily — this is not optional.
- T-fastener removal: At 5–7 days post-placement (same as gastrostomy, once fistula tract beginning to mature)
- Tube exchange: Every 3–6 months (balloon or pigtail). Over wire under fluoroscopy. Do NOT exchange before 4–6 weeks.
- Goal feeding rate: 72–96h to reach goal rate (slower than G-tube or GJ-tube tolerance)
Tube Dislodgement — Emergency Protocol (Highest Risk of All Enteral Tubes)
- ANY dislodgement within 4–6 weeks = EMERGENCY. Small bowel fistula tract takes longer to mature than gastric. Blind reinsertion at bedside risks free peritoneal perforation. Return to IR immediately. Nursing staff and patient must have this written explicitly in their discharge/care instructions.
- After 6 weeks: Tract may be partially mature. Foley catheter as bridge is not recommended for J-tube (small bore, mobile bowel) — IR urgent evaluation preferred within 2h before tract closes (J-tube tracts close faster than G-tube tracts).
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Critical Pearls
✦
T-fasteners are MANDATORY for jejunostomy — even more so than for gastrostomy. Small bowel is highly mobile and will not stay apposed to the abdominal wall without fixation. Placing a J-tube without T-fasteners is a setup for immediate dislodgement and peritoneal leak.
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Target proximal jejunum 15–30 cm past the LOT. Further down is harder to access and less predictably fixed. Near-LOT loops are closest to the anterior wall in most patients and provide the most reliable access.
✦
Tube dislodgement in an immature J-tube tract = true emergency. Educate the patient and every member of the nursing team explicitly and in writing. J-tube tracts are more fragile than G-tube tracts. This needs to be clearer in the discharge documentation than for any other enteral tube.
✦
Jejunum tolerates feeds less well than stomach. Start at 10–15 mL/hr and advance slowly over 72–96h. Rapid infusion into the jejunum causes dumping syndrome, cramping, diarrhea, and aspiration via reflux.
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CT-guided access is more reliable than fluoroscopy alone for direct jejunostomy — you can directly visualize the specific loop in real time, confirm the access path is clear of mesenteric vessels and other loops, and guide needle placement to the antimesenteric wall.
✦
Ask first: is GJ tube a better option? If the patient still has a stomach and a gastrostomy tract, a GJ tube conversion is less invasive (no new abdominal puncture), has lower dislodgement risk in early weeks, and is technically easier. Commit to direct J-tube when GJ tube has genuinely failed (2+ migrations despite correct technique) or gastric access is anatomically unavailable.
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Enteral Access Decision Algorithm
1
Can stomach be safely accessed?
Yes → G-tube (retrograde push — gastrostomy.html). IR default. No endoscopy, moderate sedation, fluoroscopic guidance.
2
Gastric access OK but aspiration risk / gastroparesis?
Yes → GJ tube (gj-tube.html). Convert existing G-tube to GJ using fluoroscopy. G-port drains stomach; J-port delivers post-pyloric feeds.
3
GJ tube repeatedly migrates / fails after 2+ attempts?
Yes → Direct J-tube (this page). Direct percutaneous jejunostomy. Requires T-fastener fixation, CT guidance, slower feed initiation.
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No stomach present (post-total gastrectomy/esophagectomy)?
Yes → Direct J-tube (this page). Gastric access anatomically impossible. Direct jejunostomy is the only percutaneous option.
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Head/neck cancer, retrograde push not feasible, oral access available?
Yes → PEG pull technique (peg-pull.html). Requires GI endoscopy + IR + anesthesia. Consider tumor seeding risk for H&N cancer.
| Tube Type | Feed Initiation Rate | Advance By | Goal Rate Timeline |
|---|---|---|---|
| G-tube | 20 mL/hr | 20 mL q8h | 24–48h |
| GJ tube (J-port) | 20 mL/hr | 10 mL q8h | 48–72h |
| J-tube (direct) | 10–15 mL/hr | 10 mL q12h | 72–96h |
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References & Resources
Primary sources · Key data · Related procedures
Key Guidelines
- SIR Standards for GI Tube Placement
- ACR-SIR Practice Parameter for Fluoroscopic Jejunostomy
Primary References
- Cope C. Conversion of a gastrostomy to a gastrojejunostomy. J Vasc Interv Radiol. 1998;9(6):961-967.
- Rumalla A, Baron TH. Results of direct percutaneous endoscopic jejunostomy. Mayo Clin Proc. 2000;75(8):807-810.
- Ho SG et al. Direct percutaneous jejunostomy via fluoroscopic guidance. AJR Am J Roentgenol. 2006;186(5):1541-1544.