21. A client is NPO and is awaiting surgery this morning.  T…

21. A client is NPO and is awaiting surgery this morning.  The diabetic care plan includes finger-stick blood glucose level with sliding scale insulin coverage at 7AM, 11AM, 4PM, and 9PM daily. The sliding scale reads: 201-300 = 4 units, 301-400=6 units, 401-499 = 8 units, > 500 notify primary health care provider.  The client’s glucose level reads 321.  How much insulin would the nurse administer?