The most common complication associated with adjustable gastric banding is
the existence of adhesions from previous surgeries which hinder a laparoscopic
procedure. In such cases, your surgeon may need to change to an open
procedure. Other complications may include band migration or slippage,
access port leakage or kinking, esophageal spasm, gastroesophageal reflux
(GERD), and nausea & vomiting.
Some of the complications associated with Roux–en–Y Gastric Bypass (RYGB) include; anastomotic leaks, strictures at the anastomotic site, dumping syndrome, stomach distension and bowel obstruction. Patients are also at risk for such nutritional deficiencies as iron, Vitamin B12, Vitamin D and calcium, resulting in anemia, osteoporosis and metabolic bone disease unless a lifelong nutritional plan including supplements as outlined by your surgeon and weight management team is followed.
Patients with a high Body Mass Index may require follow up surgery in order to reach their weight loss goals. Complications from stomach stapling may occur. Other risks and complications may include; deep vein thrombosis, ulcers, gastric leakage and fistula, pulmonary embolus, ulcers & dyspepsia.
Dumping syndrome, also known as rapid gastric emptying, can be an unpleasant result of gastric bypass surgery. It is the body´s response to what it perceives as inappropriate eating, when foods that are high in sugar or fat bypass the stomach too rapidly and dump into the small intestine poorly digested. Symptoms can range from cold sweat and a pounding pulse to severe abdominal cramps, sweating, faintness, nausea and diarrhea lasting up to an hour and prompted immediately following a meal when associated with "early" dumping. "Late" dumping can occur up to three hours following a meal.