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Large bowel obstruction — Clinical Guidelines

Overview

Large bowel obstruction (LBO) involves blockage of the distal ileum through the rectum, often due to mechanical causes like adhesions, tumors, or hernias, and can be acute or chronic, requiring prompt diagnosis and management to prevent complications such as bowel ischemia and perforation 2 5 10.

Diagnosis

Clinical Presentation: Abdominal pain, distension, vomiting, constipation, and obstipation 2 10.

Physical Examination: Assess for tenderness, palpable mass, and signs of peritonitis 2.

Imaging: Abdominal X-rays (including contrast studies), CT scans are crucial for identifying the site and cause of obstruction 2 10.

Laboratory Tests: Elevated white blood cell count may indicate infection or ischemia 2.

Endoscopy: Useful in diagnosing specific causes like tumors or strictures 5.

Management

First-Line Treatments:

- Surgical Intervention: Emergency surgery for strangulated obstructions, incarcerated hernias, or non-resolvable obstructions 2 6. - Colonic Stenting: For malignant obstructions, particularly in the left colon, as a bridge to surgery; efficacy in right-sided obstructions is less established 5.

Adjunctive Treatments:

- Octreotide: Effective for managing symptoms in inoperable malignant bowel obstruction, reducing nausea, vomiting, and abdominal pain 11 13. - Lidocaine Infusion: Considered for severe visceral pain in advanced cancer patients, though primarily for pain management rather than obstruction resolution 3.

Special Populations

Pediatrics: Milk curd syndrome is a rare iatrogenic cause in neonates, requiring prompt recognition and management 1.

Elderly: Higher risk of complications; prehabilitation and multimodal treatment approaches may reduce emergency surgery risks 6.

Comorbidities: Patients with comorbidities like diabetes may have specific etiologies (e.g., small left colon syndrome) requiring tailored management 7.

Key Recommendations

Prompt Surgical Intervention for Strangulated Obstructions: Emergency surgery is essential for preventing irreversible ischemia and mortality 2 (Evidence: Strong).

Consider Colonic Stenting for Malignant Obstructions: Use colonic stents as a bridge to surgery for left-sided malignant obstructions, with caution in right-sided cases 5 (Evidence: Moderate).

Utilize Octreotide for Symptom Management in Inoperable Cases: Administer octreotide for symptom relief in patients with inoperable malignant bowel obstruction 11 (Evidence: Moderate).

Prehabilitation for High-Risk Patients: Implement multimodal treatment strategies to reduce the risk of emergency surgery in high-risk elderly patients 6 (Evidence: Moderate).

Early Diagnosis and Management in Neonates: Recognize and treat rare causes like milk curd syndrome promptly in neonates 1 (Evidence: Weak).

References

1 Baindur AJ, Khare AK, Sharma P, Singh K, Nagashri BS, Paliwal A. A rare cause of a rare entity - Milk curd syndrome: A case series and review of literature. Tropical doctor 2026. link 2 Kudou K, Kawazoe T, Nakanoko T, Ando K, Oki E, Yoshizumi T. A novel predictive scoring system for irreversible intestinal ischemia in patients with strangulated bowel obstruction. Surgery today 2026. link 3 Velilla Echeverri DC, Gómez Díaz M, Beltrán Pachón P, Lasso Valenzuela D, Poveda Carreño S, Erazo-Muñoz M. Lidocaine infusion for malignant visceral pain: case report. BMJ supportive & palliative care 2024. link 4 Cull JN, Jacobson DL, Lau GA, Cartwright PC, Wallis MC, Skarda D et al.. Internal hernia with volvulus after major abdominal reconstructions in pediatric urology - An infrequently reported and potentially devastating complication. Journal of pediatric urology 2023. link 5 Kanaka S, Matsuda A, Yamada T, Ohta R, Sonoda H, Shinji S et al.. Colonic stent as a bridge to surgery versus emergency resection for right-sided malignant large bowel obstruction: a meta-analysis. Surgical endoscopy 2022. link 6 Fahim M, Dijksman LM, Derksen WJM, Bloemen JG, Biesma DH, Smits AB. Prospective multicentre study of a new bowel obstruction treatment in colorectal surgery: Reduced morbidity and mortality. European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology 2021. link 7 Maurin S, Husseini K, Gaudin J, Levard G. Small left colon syndrome in 3 sisters. Journal of pediatric surgery 2020. link 8 Khan MS, Haider SA, Ashfaq A, Khan S, Shariff AH. Geospatial mapping of patients presenting for Emergency Laparotomy to a Private Sector Tertiary Care Hospital in Pakistan. JPMA. The Journal of the Pakistan Medical Association 2019. link 9 Mehta A, Efron DT, Stevens K, Manukyan MC, Joseph B, Sakran JV. Hospital variation in mortality after emergent bowel resections: The role of failure-to-rescue. The journal of trauma and acute care surgery 2018. link 10 Khan MI, Claydon A. Colonic self-expanding metal stents (SEMS) in acute large bowel obstruction. The New Zealand medical journal 2011. link 11 Hisanaga T, Shinjo T, Morita T, Nakajima N, Ikenaga M, Tanimizu M et al.. Multicenter prospective study on efficacy and safety of octreotide for inoperable malignant bowel obstruction. Japanese journal of clinical oncology 2010. link 12 Bird S. Failure to diagnose: bowel obstruction. Australian family physician 2008. link 13 Massacesi C, Galeazzi G. Sustained release octreotide may have a role in the treatment of malignant bowel obstruction. Palliative medicine 2006. link

Large bowel obstruction