In strangulated obstruction with suspected perforation, which intervention is contraindicated initially?

• A. Barium enema examination
• B. Nasogastric tube insertion
• C. IV fluids
• D. Broad-spectrum antibiotics

Answer: (A)

When tissue is strangulated, the bowel may already be compromised and perforation could be present. The priority is to stabilize the patient and control contamination, not to introduce contrast into the bowel. A barium enema involves filling the colon with contrast from the rectum; if there is a perforation, the contrast can leak into the peritoneal cavity, causing chemical irritation and peritonitis and complicating surgical management. Because of this risk, it is contraindicated initially.

In the same scenario, other actions align with stabilization: inserting a nasogastric tube to decompress the stomach helps prevent emesis and aspiration and reduces distention; starting intravenous fluids supports circulation and tissue perfusion in potential shock from obstruction or sepsis; administering broad-spectrum antibiotics addresses potential bacterial translocation and peritoneal infection while preparing for possible surgical repair. Imaging decisions should favor safer approaches (like plain X-ray or CT) and avoid barium if perforation is suspected.