Beyond head/neck pathology or patients going to the OR, which group should not have blindly placed NGT?

• A. Those s/p gastric bypass surgery
• B. Pediatric patients
• C. Elderly with dementia
• D. Patients with COPD

Answer: (A)

Blind nasogastric tube placement relies on a predictable path through the esophagus into the stomach. After Roux-en-Y gastric bypass, anatomy is markedly altered: a small gastric pouch remains connected to the small intestine while the rest of the stomach and the duodenum are bypassed. Forcibly threading a tube through this altered route can place it into the wrong area, damage the gastric remnant or the gastrojejunal anastomosis, or even cause a perforation. These risks make blind placement particularly dangerous in someone with a gastric bypass, so the tube should be placed with imaging guidance or with endoscopic assistance and its position confirmed radiographically.

In other groups listed, there are notable risks with blind placement—such as misplacement into the airway or aspiration in children, elderly patients with dementia, or those with COPD—but the severe, anatomy-driven risk is specific to post-bypass patients, which is why this group is singled out as not suitable for blindly placed NGT.