Table 1 Preparative dietary protocols at our institution
From: Change the preprocedural fasting policy for contrast-enhanced CT: results of 127,200 cases
Dietary preparation instructions | Solid food | Low residue/fiber food | Clear liquids | |
|---|---|---|---|---|
Clinical scenarios | Rice, steamed buns, noodles, bread, meat, vegetables, fruits, eggs, etc. | Congee, yogurt, milk, soy milk, soup, etc. | Water, juice, non-carbonated beverages, tea, etc. | |
Abdominal examination | The upper abdomen, the whole abdomen, or the combined examination involving the upper abdomen or the whole abdomen1 (the detection of the gastrointestinal cavity lesions is excluded) | Fast for 4 h | Fast for 3 h | Unrestricted ingestion |
The lower abdomen (kidneys, adrenal glands, renal artery, urinary system, etc.), pelvic cavity (bladder, uterus, appendages, prostate, etc.) | Unrestricted ingestion (greasy and fried foods are excluded) | Unrestricted ingestion | Unrestricted ingestion | |
Three-dimensional imaging of the lumen (such as gastrointestinal cavity enhanced CT) | Fast for 4–6 h | Fast for 3 h | Unrestricted ingestion | |
Non-abdominal examination | Contrast-enhanced CT and angiography of head, neck, chest, limbs and other parts | Unrestricted ingestion (greasy and fried foods are excluded) | Unrestricted ingestion | Unrestricted ingestion |
Special population | Severe esophageal diseases or gastric emptying disorders, patients at risk of aspiration2, patients require fasting for clinical treatment, examination under general anesthesia or sedation | Foods and water were restricted according to clinical treatment needs. Intravenous supplementation of sugar and salt water was performed when necessary | ||