When an insulin-dependent diabetic must be NPO.
D001786:Blood Glucose / Q000032:analysis; D003922:Diabetes Mellitus, Type 1 / Q000451:nursing*; D005215:Fasting; D006801:Humans; D007328:Insulin / Q000008:administration & dosage; D013514:Surgical Procedures, Operative
D001786:Blood Glucose; D007328:Insulin