Complications related to balloon deployment or removal:
Above and beyond complications due to the upper digestive tract endoscopy (perforation or bleeding, bronchial inhalation as a result of gastric reflux, arrhythmia) or the anaesthetic, other complications are specifically associated with deployment and extraction of the balloon: Damage to the pharynx or oesophagus, Damage to the stomach wall, Perforation of the oesophagus, duodenum, ostium cardiacum or stomach wall if the balloon is in the wrong place when it is inflated.
Mechanical complications caused by the balloon:
The weight of the liquid-filled balloon can act on ulcers in the stomach wall to cause frank perforation, a life-threatening situation that requires emergency surgery. The digestive tract can become obstructed as a result of migration of an insufficiently inflated or partially deflated balloon; obstruction of the gut is possible as is gastric obstruction if the balloon gets lodged in the pyloric antrum: this will sometimes require surgical repair. Such complications are far more likely if the maximum time frame of six months is exceeded. The literature reports a risk of spontaneous hyperinflation due to the generation of gas inside the balloon.Acute pancreatitis is possible if the balloon exerts mechanical pressure on the organ across the stomach wall.