**3. Patients with diabetes mellitus**

It has been believed that patients with diabetes mellitus is considered before as a risk factor in patients who undergo laparoscopic cholecystectomy commonly because of symptomatic gallbladder stones.[5] This is due to reports (Chang,M.D)[6] that a high plasma glucose level is associated with a poor neurologic recovery score in patients after cardiopulmonary resuscitation. Researchers said that even if consciousness is restored, neurologic deficit may remain in hyperglycemic patients. [5] Therefore it is important to maintain an adequate plasma glucose level (120-180 mg/dl) during anesthesia as well as in the pre-operative period.

Specialists agree that in order to achieve strict plasma glucose control, the plasma glucose level is checked and controlled with hypoglycemic agent such as insulin regularly and frequently which helps prevent acute and chronic complications of DM. They said that stress caused by surgery and anesthesia induces hyperglycemia causing higher blood glucose levels in DM patients who underwent surgery than in patients who did not have surgery. [5]
