INS and diabetes mellitus: Sliding scale of regular insulin (SSI) is in use in the management of patients with diabetes since 1934.4 SSI is widely used in health care institutions1,5 because it is easy and convenient but it has the disadvantage of not delivering insulin in a physiologic manner, thereby leading to fluctuations in glycemic levels.2,3,6 Despite these drawbacks the use of SSI has been continued for almost 80 years.