Preoperative and postoperative assessment of nutrient intakes in patients who have undergone gastric bypass surgery. 1983

K Coughlin, and R M Bell, and B A Bivins, and S Wrobel, and W O Griffen

The study of 25 morbidly obese patients who had undergone gastric bypass surgery was undertaken to determine the fat, carbohydrate (CHO), protein, and total caloric intake before and at 1, 3, 6, and 12 months postoperatively. No postoperative complications occurred, and all patients lost weight appropriately. The nutrient intakes were estimated from dietary recall. Dramatic decreases occurred in average total caloric intake from a preoperative value of 3979.4 to 351.6 kcal at 1 month, 471.3 kcal at 3 months, 932.7 kcal at 6 months, and 1091 kcal at 12 months. Fat, CHO, and protein intake decreased equally until 12 months when fat intake had reached a plateau while CHO and protein intake continued to rise. Weight reduction after gastric bypass surgery is related to decreased caloric intake, predominantly in the fat component.

UI MeSH Term Description Entries
D007583 Jejunum The middle portion of the SMALL INTESTINE, between DUODENUM and ILEUM. It represents about 2/5 of the remaining portion of the small intestine below duodenum. Jejunums
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009765 Obesity A status with BODY WEIGHT that is grossly above the recommended standards, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY).
D011184 Postoperative Period The period following a surgical operation. Period, Postoperative,Periods, Postoperative,Postoperative Periods
D002149 Energy Intake Total number of calories taken in daily whether ingested or by parenteral routes. Caloric Intake,Calorie Intake,Intake, Calorie,Intake, Energy
D002241 Carbohydrates A class of organic compounds composed of carbon, hydrogen, and oxygen in a ratio of Cn(H2O)n. The largest class of organic compounds, including STARCH; GLYCOGEN; CELLULOSE; POLYSACCHARIDES; and simple MONOSACCHARIDES. Carbohydrate
D004032 Diet Regular course of eating and drinking adopted by a person or animal. Diets
D004041 Dietary Fats Fats present in food, especially in animal products such as meat, meat products, butter, ghee. They are present in lower amounts in nuts, seeds, and avocados. Fats, Dietary,Dietary Fat,Fat, Dietary
D004044 Dietary Proteins Proteins obtained from foods. They are the main source of the ESSENTIAL AMINO ACIDS. Proteins, Dietary,Dietary Protein,Protein, Dietary

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