Enteral nutrition consensus report from KEPAN: Indications, choice, practical application, and follow-up.

OBJECTIVES: Clinicians are in need of guidance that will ease the application of medical nutrition therapy. In order to facilitate the application and success of medical nutrition therapy, the Turkish Clinical Enteral & Parenteral Nutrition Society (KEPAN) planned a report that is short, is clear, and has clear-cut recommendations that will guide health care professionals in the indications, choice, practical application, follow-up, and stopping of enteral nutrition. METHODS: The enteral nutrition consensus report on enteral nutrition use in medical nutrition therapy was developed by a study group (12 working group academicians and 17 expert group academicians) under the organization of KEPAN. The enteral nutrition consensus report was generated in 5 online and face-to-face phases from December 2019 through October 2022. At the end (Delphi rounds), a total of 24 questions and subjects, recommendations, and comments were sent to the enteral nutrition working group and the expert group via e-mail. They were asked to score the criteria by using the Likert scale. RESULTS: The first round of the study resulted in acceptance of all 24 recommendations. None of the criteria was rejected. Only some minor editing for wording was recommended by the panelists during the first and second rounds of the Delphi study. The final report was sent to all 29 panelists and was approved without any revision suggestions. CONCLUSION: This report provides 24 clear-cut recommendations in a question-answer format. We believe that this report could have a significant effect on the optimum use of enteral nutrition in the context of medical nutrition therapy when clinicians manage everyday patients.

Preoperative administration of oral carbohydrate-rich solutions: Comparison of glucometabolic responses and tolerability between patients with and without insulin resistance.

OBJECTIVE: Preoperative carbohydrate loading with clear fluids is thought to reduce surgery-related insulin resistance (IR). However, IR per se is already present in some patients scheduled for elective surgery. Data on the safety of preoperative oral carbohydrate loading in patients with IR undergoing surgery is lacking. We aimed to evaluate the effects of preoperative carbohydrate loading on the glucometabolic state and gastric content of patients with and without IR. METHODS: Thirty-four non-diabetics received 800 mL of a special carbohydrate-containing drink on the evening before the operation and then 400 mL 2 h before surgery. Blood samples for glucose, insulin, and cortisol levels were taken immediately before the second dose, at 40 and 90 min after intake of the drink, and at the onset of surgery. Patients with a homeostasis model assessment IR score >2.5 were considered to have IR. The differences between patients with and without IR were then evaluated. RESULTS: Eight of the 34 patients had IR and the remaining 26 did not. Glucose levels in the IR group were higher than those in the non-IR group, but the differences did not reach significance. The initially elevated insulin concentrations then tended to decrease to the corresponding levels detected in the non-IR group. The cortisol concentrations were similar in both groups. CONCLUSION: Patients with IR receiving a carbohydrate-rich drink before surgery appear not to be affected adversely by the beverage. Furthermore, they also obtain the probable beneficial effects related to these drinks and, like patients without IR, can undergo surgery safely.

Effects of preoperative carbohydrate loading on glucose metabolism and gastric contents in patients undergoing moderate surgery: a randomized, controlled trial.

OBJECTIVE: Despite contrary evidence, the practice of overnight fasting before elective surgery maintains its place in tradition. However, prolonged starvation, by its catabolic action, may increase the detrimental effects of surgery. In this study, we evaluated the effects of preoperative carbohydrate loading on the gastric contents of patients and perioperative metabolism. METHODS: Seventy patients scheduled for cholecystectomy or thyroidectomy randomly were assigned to the treatment or control group. Patients in the treatment group (n = 34) received 800 mL of a carbohydrate-rich fluid on the evening before surgery and 400 mL of the same fluid 2 h preoperatively. Conversely, control patients (n = 36) underwent overnight fasting. Plasma glucose and serum insulin levels were obtained across the perioperative period and during anesthesia induction. The volume and pH of preoperative residual gastric contents also were measured. RESULTS: Preoperative plasma glucose levels were found to remain significantly higher in patients who had received the carbohydrate-rich fluid. Serum insulin levels that were elevated initially in the study group returned to control levels by the time of anesthesia induction. There was no statistical difference between the two groups with respect to gastric residue contents or gastric fluid pH. CONCLUSION: The preoperative intake of carbohydrate-rich fluids does not appear to alter the amount or pH of gastric contents, suggesting that this is a safe procedure, in terms of aspiration risk. Furthermore, the intake of such fluid might prevent energy malnutrition.