Final answer:
The nurse should give 8 units of insulin aspart for a blood glucose level of 285 mg/dL according to the sliding scale, which helps manage hyperglycemia in diabetics.
Step-by-step explanation:
The nurse should administer 8 units of insulin aspart to a client whose blood glucose level is 285 mg/dL, as per the prescribed sliding scale parameters. The scale indicates that for a glucose level between 261 and 300 mg/dL, the correct dosage is 8 units. Maintaining blood glucose levels within a normal range is crucial for health, as high levels indicate hyperglycemia, which is managed by administering insulin.
Conversely, if blood glucose levels are too low, a condition known as hypoglycemia occurs, which can be managed by administrating glucagon. This sliding scale insulin dosing is part of managing diabetes mellitus and ensuring that levels do not reach a point where glucosuria occurs, meaning glucose is excreted in the urine.