A randomized trial of preoperative oral carbohydrates in abdominal surgery

Interventions: For the study group, the beverage contained 12.5% carbohydrates (poly-carbohydrates), 50 kcal/100 mL, 285 mOsmol/kg (NutriciapreOp, Nutricia Ltd.)
The study group received 800 mL (administered orally) of carbohydrate beverage in the evening before surgery (22:00) and an additional 400 mL 2 h before anesthesia induction.
Primary outcome(s): Patient well-being: Thirst, anxiety, hunger, mouth dryness, nausea, weakness and sleep quality were assessed using visual analogue scale (VAS) scores 1–10.
[VAS score questionnaire was filled twice, within 24 h following the surgery (in the morning of the first postoperative day) and between 36 to 48 h following the surgery (in the morning of the second postoperative day.];Patient clinical status: Clinical evaluation by the Simplified Acute Physiology Score (SAPS-II)[Performed within 24 h following the surgery];Length of hospital stay.[ The length of hospital was recorded for each patient, until the hospital discharge.]
Study Design: Purpose: Treatment; Allocation: Randomised controlled trial; Masking: Blinded (masking used);Assignment: Parallel;Type of endpoint: Efficacy