A nurse is caring for a client who is 3 hr postoperative following a total knee arthroplasty. Which of the following actions should the nurse take to prevent venous thromboembolism?

A. This prescription addresses hypokalemia. Potassium chloride is administered intravenously to help normalize potassium levels within the desired range. However, in this case the patient’s potassium is 5.5 hence does not require potassium chloride.

B. The client has mild hyperkalemia; hence, continuous cardiac monitoring is prudent to detect any potential arrhythmias or changes in cardiac status. However, the priority interventions are insulin therapy, hydration, and urinary catheter insertionto monitor input and output.

C. Subcutaneous insulin administration may be appropriate for clients with diabetes mellitus, but in this case, the client's blood glucose level is critically high, and they may be experiencing diabetic ketoacidosis (DKA), which requires rapid correction. Subcutaneous insulin administration would not provide the prompt and aggressive treatment required for DKA.

D. This prescription addresses the client's hyperglycemia and acidosis indicated by the blood glucose level of 468 mg/dL and pH of 7.30, respectively. Continuous intravenous insulin infusion is the standard treatment for diabetic ketoacidosis (DKA) to lower blood glucose levels and correct acidosis.

E. This prescription addresses the client's dehydration indicated by the elevated blood glucose level, decreased blood pressure, and slight tenting of the skin. Intravenous fluid resuscitation with 0.9% sodium chloride is initiated to restore intravascular volume and correct electrolyte imbalances.

F. Administering D5W intravenously is contraindicated in the setting of hyperglycemia and diabetic ketoacidosis (DKA) because it would exacerbate the already elevated blood glucose levels. D5W contains glucose and would further increase blood glucose levels, worsening the client's condition.

G. While monitoring blood glucose levels is important for clients with diabetes, checking it every 4 hours is not sufficient in this scenario, especially given the client's markedly elevated blood glucose level of 468 mg/dL and symptoms suggestive of diabetic ketoacidosis (DKA). Therefore, blood glucose levels should be monitored at least hourly.

H. Monitoring urine output is important in clients with diabetes and dehydration. Therefore, inserting an indwelling urinary catheter is important in this scenario.

A) Skin breakdown could occur due to the catheter bag lying in bed, but it is not the primary risk associated with the observations noted.
B) A kinked IV tubing can lead to stasis of fluids, which increases the risk of infection. Additionally, if the urinary catheter bag is not positioned below the level of the bladder, urine can reflux back into the bladder, which also increases the risk of infection.
C) Neurogenic bladder is a condition typically associated with nerve damage, not directly related to the position of the catheter bag or kinked tubing.
D) Phlebitis is inflammation of a vein, which would not be directly caused by the issues noted with the urinary catheter.