Which tube is inserted through the mouth into the stomach and is used similarly to an NG tube for feeding or drainage?

• A. Oral Gastric tube- OG tube
• B. Nasogastric tube- NG tube
• C. Percutaneous Endoscopic Gastrostomy tube- PEG tube
• D. Paracentesis

Answer: (A)

The concept here is that enteral tubes can access the stomach through different routes but serve similar feeding or drainage purposes. The tube that is inserted through the mouth into the stomach is called an oral gastric (OG) tube. It functions like a nasogastric tube (NG tube) in that both deliver feedings or drain gastric contents, just via different entry points—OG through the mouth, NG through the nose. The other options differ: a PEG tube goes through the abdominal wall for longer-term feeding, and paracentesis is a procedure to remove fluid from the peritoneal cavity, not a feeding/drainage tube into the stomach. So the tube described as entering via the mouth and used like an NG tube is the oral gastric tube.