A nurse is assessing a client's understanding of a surgical procedure prior to witnessing their signature on the informed consent form. The nurse determines that the client does not understand what the procedure will involve. Which of the following actions should the nurse take?

Choice A rationale:

Increased peristalsis would be a positive sign and not indicative of postoperative paralytic ileus. Increased peristalsis would mean the bowel is functioning well.

Choice B rationale:

Abdominal distension is a classic sign of postoperative paralytic ileus, where the bowel's motility is reduced or absent. This condition can lead to a buildup of gas and fluids, causing the abdomen to become distended.

Choice C rationale:

Proximal high-pitched bowel sounds can be a normal finding after surgery, but they are not indicative of paralytic ileus. They may even be heard as the bowel recovers its motility.

Choice D rationale:

Passing flatus is a positive sign, as it indicates that the bowel is working and the patient is passing gas. This is not indicative of a postoperative paralytic ileus, which is characterized by the absence of bowel movement.

Choice A rationale:
(Potassium level) Lovastatin is a medication used to treat high cholesterol levels. While potassium levels are important to monitor for certain conditions, they are not directly related to the initiation of lovastatin therapy. Therefore, this is not the correct choice for diagnostic testing before starting the medication.
Choice B rationale:
(Hemoglobin level) Hemoglobin levels are important to assess for anemia or other blood disorders. However, they are not specifically required before starting lovastatin therapy. Therefore, this is not the correct choice for diagnostic testing before starting the medication.
Choice C rationale:
(Kidney function tests) While kidney function tests are essential for many medications to ensure proper excretion and avoid toxicity, they are not directly related to the initiation of lovastatin therapy. Therefore, this is not the correct choice for diagnostic testing before starting the medication.
Choice D rationale:
(Liver function tests) Liver function tests are crucial before starting lovastatin therapy. Lovastatin is metabolized in the liver, and it can potentially cause liver damage or abnormalities in liver enzymes. Monitoring liver function helps detect any pre-existing liver conditions and ensures the safe use of the medication. Therefore, this is the correct choice for diagnostic testing before starting the medication.