A 50 year old diabetic and hypertensive patient on amlodipine and glimepiride is posted for elective AV fistula creation for dialysis in view of acute kidney failure. What is your view as anaesthesiologist with regard to pre-operative orders
Anti hypertensive and oral hypoglycemic drugs should not be stopped. In  a major surgery insulin should be started instead of oral hypoglycemic agents.
Stop amlodipine but continue glimepiride
Continue amlodipine , stop glimepiride and switch over to insulin a day prior
Stop both amlodipine and glimepiride
Put patient on insulin and schedule surgery only after a week.