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Indications / Contraindications
⚠ Sentinel Bleed — Do Not Ignore
Any small bleed from drain output, hematemesis, hematochezia, or unexplained falling Hgb within 2–4 weeks of Whipple = GDA stump problem until proven otherwise. Do NOT wait for massive hemorrhage — the sentinel bleed is your intervention window.
Background and Indications
- Post-pancreaticoduodenectomy (Whipple) hemorrhage: rare (3–8%) but potentially fatal (10–40% mortality)
- GDA stump eroded by pancreatic juice (fistula), infection, or pseudoaneurysm formation
- Delayed hemorrhage (>24h post-op) — endovascular first line; IR preferred over re-operation
- Hemodynamically unstable post-surgical patient
- Sentinel bleed: IR evaluation — do not wait for massive hemorrhage
- Other post-Whipple sites: right hepatic artery, proper hepatic artery, SMA branches, hepaticojejunostomy
Contraindications
- Early hemorrhage (<24h): Surgery is often preferred — anastomotic or technical bleeding more amenable to operative repair
- Hemodynamic instability not responding to resuscitation: Emergent OR — cannot wait for IR setup
- Variant hepatic anatomy not adequately characterized before stenting — review CTA first
- Active infection of planned stent zone — relative contraindication; treat underlying infection while proceeding with embolization
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Pre-Procedure Checklist
Recognize the sentinel bleed immediately. Any unexplained bleed 7–21 days post-Whipple = GDA stump problem. Order CTA urgently. This is the intervention window — act before massive hemorrhage.
CT angiography. Identifies: pseudoaneurysm at GDA stump, active extravasation, involved vessel. Also identifies pancreatic fistula, abscess, or biloma (predisposing causes). Review variant hepatic anatomy on CTA before proceeding.
Labs and transfusion. CBC, coagulation panel, type & cross. Start transfusion early. Target Hgb ≥8 in post-operative patients. Fresh frozen plasma for coagulopathy.
Surgical team on standby. Always maintain close surgical involvement. If endovascular fails — emergent OR. Communicate procedural plan before starting.
Antibiotics. Broad-spectrum coverage given peri-anastomotic infection risk. Drain any accessible abscess or biloma — treat the underlying cause of GDA erosion.
Access planning. Femoral (preferred). Right radial as alternative for favorable anterior approach to celiac axis, avoiding femoral sheath instability. Confirm variant anatomy before selecting stent sizing.
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Relevant Anatomy
GDA Anatomy and Post-Whipple Changes
- Normal: Celiac trunk → common hepatic artery (CHA) → GDA arises at the "genu" of CHA, at the junction with the proper hepatic artery
- After Whipple (pancreaticoduodenectomy): GDA is ligated/stapled at its origin from CHA. The stump is exposed to duodenal/pancreatic fluid.
- Pseudoaneurysm formation: Activated pancreatic enzymes erode the GDA stump suture line → weak point → pseudoaneurysm → blowout
- CHA → proper hepatic artery → right and left hepatic arteries. Blood flow to liver maintained after Whipple via CHA → proper hepatic (GDA branch no longer present).
Critical Hepatic Artery Considerations
- Covered stent principle: Stent is placed in CHA spanning the GDA stump origin, maintaining hepatic perfusion while excluding the bleeding stump. Hepatic flow is preserved — liver does not lose its blood supply.
- Variant anatomy (CRITICAL): Replaced right hepatic artery from SMA in ~20% of population. Must identify on CTA before any intervention. Covering a replaced hepatic = hepatic ischemia.
- If coil embolization used instead: Risk of hepatic ischemia if CHA/proper hepatic artery supply is compromised. Check collateral development first.
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Technique
Default RadCall approach · share your own below
Supplies
5Fr SOS2
0.035" Glidewire
5Fr C2 glide
Exchange length 0.035" Rosen wire
6 Fr x 45 cm Ansel sheath
6 mm x 29 cm VBX
Contrast + heparinized saline flush
3-way stopcocks
Steps
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Celiac angiogram
Selective celiac arteriogram with 5Fr C2 glide and Glidewire. Identify CHA origin and course. Look for pseudoaneurysm or abrupt cutoff at GDA stump. AP + oblique views — oblique often better demonstrates GDA stump origin.
▶ GDA blowout — active arterial hemorrhage
Celiac angiogram: active contrast extravasation from GDA blowout — a surgical emergency requiring immediate endovascular or operative intervention.
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Selective CHA angiogram and Exchange
Advance catheter to CHA. AP + oblique views. Locate GDA stump. Confirm pseudoaneurysm location relative to hepatic artery bifurcation. Assess hepatic artery anatomy (identify any replaced/accessory vessels). Exchange for exchange length Rosen wire (atraumatic tip).
▶ Sheath and wire across GDA — pre-stent position
Rosen wire and sheath positioned across the GDA defect prior to covered stent deployment — maintain wire access across the lesion at all times.
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Treatment decision: covered stent vs coil embolization
Covered stent (preferred when feasible): Preserves hepatic artery blood flow. Indicated when: good vessel caliber, non-tortuous anatomy, no severely infected field. Coil embolization: Alternative when stent not feasible. Risk of hepatic ischemia if CHA/proper hepatic compromised. Best reserved for isolated GDA stump without hepatic supply concern.
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Covered stent deployment
Size stent 1–2 mm larger than vessel diameter (typically 6–8 mm). Bring sheath just proximal to GDA stump (if using balloon mounted stent). Advance VBX and deploy across GDA stump origin in CHA/proper hepatic artery. Stent spans the GDA stump, excluding bleed while preserving lumen for hepatic flow.
▶ Covered stent deployed — hemorrhage controlled
Covered stent across GDA blowout: completion angiogram confirms exclusion of hemorrhage with preserved hepatic artery flow.
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Completion angiogram
Full celiac arteriogram to confirm: hepatic artery flow preserved, GDA stump excluded, no residual filling of pseudoaneurysm. If residual stump filling present → additional coil packing of sac via microcatheter. Confirm no non-target embolization.
▶ Coil embolization — GDA and IPDA (alternative approach)
Coil embolization of GDA and inferior pancreaticoduodenal artery — preferred when covered stent is not feasible; sandwich technique used to prevent retrograde filling.
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Troubleshooting
Problem
Cannot access GDA stump — stump too short or vessel too tortuous
Likely cause: Short surgical stump, post-operative adhesions, vessel tortuosity at celiac origin.
Next step: Coaxial microcatheter for additional support. Consider right radial access — provides excellent anterior approach to celiac axis, often with superior curve. Direct sac embolization with coils from the CHA side as last resort.
Problem
Variant hepatic artery anatomy (replaced right or left hepatic)
Likely cause: Replaced right hepatic from SMA (~20%); replaced left hepatic from left gastric (~10%). Must be identified on pre-procedure CTA — not discovered for the first time on the table.
Next step: Stop — review CTA anatomy before proceeding with any intervention. If replaced right hepatic from SMA is present and CHA gets occluded, hepatic supply is unaffected (right liver gets flow from SMA). Adjust treatment strategy accordingly. Never proceed without understanding the hepatic anatomy.
Problem
Covered stent thrombosis on follow-up CT
Likely cause: Very common (~50% long-term) — stent in an infected field with sluggish hepatic flow or suboptimal stent sizing.
Next step: Do NOT panic. Hepatic collaterals typically develop after Whipple, making stent thrombosis usually asymptomatic. Treat only if symptomatic (rising LFTs, hepatic infarcts). Expectant management in most cases. Anticoagulation in selected symptomatic cases.
Problem
Recurrent bleed after stent placement
Likely cause: Bleeding from jejunal branches, hepaticojejunostomy site, or other post-operative vessels — not from GDA stump itself.
Next step: Repeat angiography — complete celiac + SMA survey. Identify new bleeding source. Targeted superselective embolization of new vessel. Involve surgery early if repeat failure.
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Complications
Primary Risks
- Hepatic ischemia/infarction — most feared; risk reduced significantly with covered stent over embolization alone
- Stent thrombosis — ~50% long-term; usually benign due to hepatic collateral development; treat only if symptomatic
- Rebleeding — from non-GDA vessel (jejunal branches, hepaticojejunostomy); requires complete re-survey
Secondary Risks
- Stent migration — particularly in infected field; monitor on CT at 24–48h
- Stent infection — peri-anastomotic contamination from pancreatic fistula; antibiotics and source control
- Biliary ischemia — if hepatic artery compromise affects bile duct supply
- Access site hematoma — standard complication; manual compression or closure device
- Contrast nephropathy — minimize contrast in post-operative patients with possible pre-renal impairment
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Post-Procedure Care
Monitoring
- ICU: vital signs continuous monitoring, drain output hourly
- LFTs daily for 48–72h: rising AST/ALT = hepatic ischemia concern → CT hepatic perfusion assessment
- CT at 24–48h: confirm stent position, hepatic perfusion, resolution of pseudoaneurysm, exclude hepatic infarct
- Drain management: If abscess/fistula present, ensure drainage is optimized — treat underlying cause of GDA erosion
Medical Management
- Antiplatelet therapy: Aspirin 81 mg daily for covered stents — reduce thrombosis risk. Continue for 6 months.
- Antibiotics: Broad-spectrum coverage continued; tailor per cultures from drain/abscess
- Continued surgical consultation — close surgical team involvement required throughout recovery
- Recurrent bleed: urgent repeat CTA → repeat angiography (complete celiac + SMA) → surgery if repeat endovascular failure
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Critical Pearls
✦
The sentinel bleed is your window: Small bleed 7–21 days post-Whipple = GDA stump problem until proven otherwise. CTA urgently. Act before the massive hemorrhage. Missing the sentinel bleed costs lives.
✦
Covered stent preserves hepatic flow — it is preferred over coil embolization: A covered stent in CHA spanning the GDA stump excludes the bleed AND maintains hepatic perfusion. Coil embolization alone risks hepatic ischemia if collateral flow hasn't developed.
✦
Variant hepatic anatomy must be known before you start: Replaced right hepatic from SMA is present in ~20% of patients. Review the pre-procedure CTA for this before selecting treatment strategy. Discovering it on the table when you've already deployed a stent is catastrophic.
✦
Pancreatic fistula drives this complication: Activated pancreatic enzymes digest the GDA stump suture line. Endovascular treatment controls the bleed, but the underlying fistula must be addressed — drain the source.
✦
Stent thrombosis is common (~50%) but usually benign: Hepatic collaterals develop post-Whipple. Don't panic at stent thrombosis on follow-up CT without ischemic symptoms. Treat only if LFTs rise or hepatic infarct is identified.
✦
Radial access advantage for GDA/hepatic work: Right radial approach provides favorable anterior curve to celiac axis, avoiding femoral sheath movement that can destabilize catheter position during critical stent deployment.
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Post-Whipple Hemorrhage Classification
ISGPS Classification of Post-Pancreatectomy Hemorrhage (PPH)
| Grade | Timing | Location | Severity | Management |
|---|---|---|---|---|
| A | Early (<24h) | Intra- or extra-luminal | Mild | Conservative (observation, transfusion if needed) |
| B | Early or Late | Intra- or extra-luminal | Moderate | Transfusion; IR embolization or re-laparotomy |
| C | Late (>24h) | Intra- or extra-luminal | Severe | IR (covered stent / embolization) or emergent surgery |
Common Vessels Involved Post-Whipple
- GDA stump — #1 most common source; pseudoaneurysm + blowout
- Right hepatic artery — branch erosion from peri-anastomotic infection
- Superior mesenteric artery branches — erosion by pancreatic fistula
- Replaced hepatic artery branches — particularly in variant anatomy patients
- Hepaticojejunostomy site — anastomotic hemorrhage (early) or pseudoaneurysm (late)
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References & Resources
Primary sources · Key data · Related procedures
Key Guidelines
- SIR Standards of Practice
- CIRSE Standards of Practice for Hepatic Arterial Embolization
Primary References
- Yoon W et al. Gastrointestinal bleeding: diagnosis and treatment. Korean J Radiol. 2016;17(4):505-515.
- Tessier DJ et al. Management of vascular complications after pancreaticoduodenectomy. Arch Surg. 2006;141(8):816-823.
- Puppala S et al. Vascular complications after pancreaticoduodenectomy: radiology and treatment. Cardiovasc Intervent Radiol. 2011;34(5):1142-1153.