Overview
Chronic intestinal pseudo-obstruction (CIPO) is a rare disorder characterized by persistent symptoms mimicking mechanical bowel obstruction without an identifiable physical obstruction, affecting motility and transit in the gastrointestinal tract 134.Diagnosis
Clinical Presentation: Abdominal distension, vomiting, constipation, and failure to thrive are common 34.
Radiographic Studies: Delayed transit time, bowel dilatation, and microcolon on contrast studies 3.
Exploratory Laparotomy: Reveals no mechanical obstruction 3.
Esophageal Manometry: Often shows abnormal motility 4.
Anal Manometry: Typically normal recto-anal inhibitory reflex 4.
Biopsy Studies: May reveal hypoganglionosis or other neuropathologic findings 3.Management
Supportive Care: Nutritional support, including parenteral nutrition when necessary 1.
Medical Therapy: No specific drug doses mentioned; management often includes symptomatic relief and addressing complications 14.
Immunosuppressive Therapy: Used in cases of graft rejection post-transplantation, e.g., steroids, OKT3 1.
Surgical Interventions: May include transplantation in severe cases refractory to medical management 1.Special Populations
Pediatrics: Neonatal onset has a particularly poor prognosis with high mortality rates within the first few months 3.
Inheritance Patterns: Autosomal dominant and recessive inheritance noted, with some cases possibly due to spontaneous mutations or acquired disease 4.
Comorbidities: Often associated with urinary tract involvement and CNS anomalies, suggesting complex genetic or neuropathic origins 2.Key Recommendations
Suspect chronic intestinal pseudo-obstruction in neonates with urinary retention, abdominal distension, or constipation early in life (Evidence: Moderate 3).
Establish diagnosis through clinical presentation, radiographic studies, and exclusion of mechanical obstruction via laparotomy (Evidence: Moderate 34).
Consider early nutritional support, including parenteral nutrition, for severe cases (Evidence: Expert opinion 1).
Manage acute complications like graft rejection with appropriate immunosuppressive therapies based on clinical response (Evidence: Weak 1).
Evaluate for potential genetic or neuropathic causes, especially in pediatric cases with additional systemic symptoms (Evidence: Moderate 24).References
1 Giovanelli M, Gupte GL, Sharif K, Mayer DA, Mirza DF. Chronic rejection after combined liver and small bowel transplantation in a child with chronic intestinal pseudo-obstruction: a case report. Transplantation proceedings 2008. link
2 Hadchouel A, Bellaiche M, Baumann C, Darnaud G, El Ghoneimi A, Ferkdadji L et al.. Neuropathic visceral dysmotility, brain cysts and calcifications, facial dysmorphism and developmental delay in two sibs. A new syndrome?. European journal of medical genetics 2005. link
3 Huang YC, Lee HC, Huang FY, Kao HA, Yeh ML, Chang PY et al.. Neonatal-onset chronic intestinal pseudo-obstruction syndrome. Clinical pediatrics 1995. link
4 Vargas JH, Sachs P, Ament ME. Chronic intestinal pseudo-obstruction syndrome in pediatrics. Results of a national survey by members of the North American Society of Pediatric Gastroenterology and Nutrition. Journal of pediatric gastroenterology and nutrition 1988. link