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Table 1 I-FEED scoring system

From: Goal-directed fluid therapy using stroke volume variation on length of stay and postoperative gastrointestinal function after major abdominal surgery-a randomized controlled trial

Scoring item

Intake

Feeling nauseated

Emesis

Exam

Duration of symptoms

Scoring

Tolerating oral diet (0)

None (0)

None (0)

No distention (0)

0–24 h (0)

Limited Tolerance (1)

Responsive to treatment (1)

≥ episode of low volume (< 100 ml) and non-bilious (1)

Distention without tympany (1)

24–72 h (1)

Complete intolerance (2)

Resistant to treatment (2)

≥ episode of high volume (> 100 ml) and bilious (2)

Significant distention with tympany (2)

> 72 h (2)

  1. I-FEED, Intake, Feeling Nauseated, Emesis, Exam, and Duration of symptoms. The scoring system attributes 0–2 points for each of the 5 components based on the clinical presentation of the patient and categorizes patients into normal (0–2), postoperative GI intolerance (3–5), and postoperative GI dysfunction (≥ 6)