This tube is used to control esophageal variceal hemorrhage by means of balloon tamponade. After passage through the mouth, once the gastric balloon is well into the stomach, air is introduced via channel B to inflate the gastric balloon. The tube is pulled back to secure the position of the gastric balloon by light traction immediately beneath the gastro-esophageal junction. Inflation of the esophageal balloon is rarely required. Channel C (gastric aspiration) and D (esophageal aspiration) enable blood and secretion to be sucked out.
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