Abstract
A 44-year-old obese woman is admitted to the hospital for elective hysterectomy; on routine preoperative urine testing she is found to have glycosuria. Should operation be postponed?A 72-year-old diabetic man with advanced peripheral vascular disease and one gangrenous toe is scheduled for surgery. His diabetes has been managed with diet and tolbutamide, two tablets before breakfast and one before supper. How should his diabetes be managed on the day of surgery?A 19-year-old previously healthy college student is seen at the emergency ward with acute abdominal pain and vomiting. His white-cell count is 18,000; his urine gives a 4+ . . .

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