The purpose of the study is the investigation of the effect of fat supplement on gastric emptying rate and the appearance of symptoms of Dumping Syndrome in patients who have undergone gastrointestinal- duodenal surgery. Patients who have undergone bariatric surgery have been examined for the presence of the Dumping syndrome, with glucose measurements, the Sigstad's questionnaire and questionnaire of Arts. Patients diagnosed positive, reiterated the examination process in a second meeting consuming an extra fat supplement. The data obtained on the different appointments were compared between the two groups in a cross over design.
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Glucose Levels
Timeframe: before the ingestion of the carbohydrate and fat supplement (baseline)
Glucose Levels
Timeframe: 30 minutes after the ingestion of the carbohydrate and fat supplement
Glucose Levels
Timeframe: 60 minutes after the ingestion of the the carbohydrate and fat supplement
Glucose Levels
Timeframe: 90 minutes after the ingestion of the the carbohydrate and fat supplement
Glucose Levels
Timeframe: 120 minutes after the ingestion of the the carbohydrate and fat supplement
Sigstad's Questionnaire
Timeframe: 1st hour after the ingestion of the supplements
Sigstad's Questionnaire
Timeframe: 2nd hour after the ingestion of the supplements
Arts's Questionnaire
Timeframe: 1st hour after the ingestion of the supplements
Arts's Questionnaire
Timeframe: 2nd hour after the ingestion of the supplements