A nurse is caring for several clients who are at risk of developing a pressure injury. Which of the following clients is most at risk?

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.

Choice A rationale:
Poor skin turgor is a sign of dehydration and is not specifically related to hypoglycemia. It is assessed by pinching the skin on the back of the hand and observing how quickly it returns to its normal position.
Choice B rationale:
Fruity breath odor is associated with diabetic ketoacidosis (DKA), a complication of uncontrolled diabetes, not hypoglycemia. It is caused by the presence of ketones in the breath due to the breakdown of fats for energy in the absence of adequate insulin.
Choice C rationale:
Kussmaul respirations are deep, rapid, and labored breathing patterns seen in diabetic ketoacidosis (DKA), not in hypoglycemia. They are the body's attempt to blow off excess carbon dioxide and acid from the blood.
Choice D rationale:
Irritability is a common manifestation of hypoglycemia. Low blood glucose levels can affect brain function, leading to mood changes, irritability, and nervousness.