Management of Intussusception
For pediatric intussusception, pneumatic (air) enema reduction under fluoroscopic or ultrasound guidance is the first-line treatment, with surgery reserved for failed reduction, peritonitis, or hemodynamic instability.
Initial Assessment and Diagnosis
The diagnostic approach should focus on:
- Ultrasound as the primary diagnostic tool in children, showing the classic "target sign" or "pseudokidney sign" 1
- Clinical presentation: intermittent colicky abdominal pain, vomiting, bloody stools ("currant jelly"), and palpable abdominal mass
- Hemodynamic stability assessment and signs of peritonitis (which mandate immediate surgical consultation)
Plain radiographs have limited utility and should not delay definitive imaging or treatment 1.
Non-Operative Management (First-Line for Stable Patients)
Enema Reduction Technique
Air enema is superior to liquid enema for successful reduction (RR 1.28,95% CI 1.10-1.49), requiring treatment of only 6 patients for one additional successful reduction compared to liquid 2. The recent modified pneumatic reduction (MPR) protocol achieved a remarkable 99% success rate with only 1% complication rate 3.
Key technical points:
- Use manual sphygmomanometer-based system with incremental pressure adjustments 3
- Perform under fluoroscopic or sonographic guidance
- Avoid barium (recommendation grade D) due to severe complications if perforation occurs 4
- Alternative contrast media: air (preferred), water-soluble iodinated contrast, or normal saline 4
Adjunctive Pharmacotherapy
Dexamethasone as an adjunct significantly reduces recurrence rates (RR 0.14,95% CI 0.03-0.60; NNT = 13) 2. In cases of failed initial attempts or recurrent intussusception, intravenous hydrocortisone increased the proportion of successful "easy" reductions from 47% to 83% (p=0.038) 3.
Glucagon is not recommended as it does not improve reduction success rates (RR 1.09,95% CI 0.94-1.26) 2.
Delayed Repeat Enema
If initial enema achieves partial reduction and the patient remains hemodynamically stable, delayed repeat enema is recommended as it improves overall success rates 4. This approach can be attempted when there is no evidence of perforation or clinical deterioration.
Post-Reduction Observation
After successful uncomplicated reduction, patients can be safely observed in the emergency department, potentially avoiding hospitalization 5. However, practice variation exists in this area 6.
Surgical Management
Surgery is indicated for:
- Failed enema reduction after appropriate attempts
- Signs of peritonitis or bowel perforation
- Hemodynamic instability
- Pathological lead points (more common in adults)
Laparoscopic reduction has high success rates and should be prioritized over open laparotomy when feasible 5. For adult intussusception, surgical intervention remains the primary treatment due to high malignancy risk 7.
Surgical approach differs by location:
- Colonic intussusception: Complete en-bloc resection without reduction 5
- Enteric intussusception: Reduction followed by resection if viable 5
Recurrence Management
Early recurrence occurs in approximately 16% and delayed recurrence in 10% of cases 3. For recurrent cases:
- Repeat enema reduction can be attempted if patient is stable
- Consider corticosteroid adjunct (dexamethasone or hydrocortisone) 3, 2
- Surgical consultation if multiple recurrences occur
Critical Pitfalls to Avoid
- Do not use prophylactic antibiotics before radiologic reduction in hemodynamically stable children—they do not reduce complications 5
- Do not delay treatment for extensive imaging workup if diagnosis is clear on ultrasound
- Do not persist with enema reduction in the presence of peritoneal signs or hemodynamic compromise
- Do not use barium for enema reduction due to peritonitis risk with perforation 4
Adult vs. Pediatric Considerations
Adult small bowel intussusception requires different management due to:
- High suspicion for malignant lead point (especially with alarm features: weight loss, history of malignancy, iron deficiency anemia) 7
- CT remains gold standard for identifying lead points in adults 7
- Surgical intervention is primary treatment for adults rather than enema reduction 5
The standardized protocolized approach with pneumatic reduction achieves excellent outcomes even in challenging scenarios, supporting non-operative management as first-line in pediatric cases 3.