A nurse is teaching an older adult client about fall prevention strategies at home. Which of the following client statements indicates an understanding of the teaching?

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:

Completely irrigating one eye before irrigating the second eye is the correct action to take when a client receives a chemical splash on their face. This approach helps prevent the potential spread of the chemical from one eye to the other. Irrigation should be done immediately to flush out the chemical and minimize its harmful effects.

Choice B rationale:

Informing the client to blink their eyes rapidly during the irrigation process is not recommended. Blinking may exacerbate the dispersion of the chemical and could lead to further damage to the eyes. Instead, the client should keep their eyes open during irrigation.

Choice C rationale:

Delaying the irrigation process until the type of chemical in the eyes is identified is not appropriate. Time is critical in minimizing the impact of the chemical on the eyes. Immediate irrigation is essential, regardless of the type of chemical, to remove the substance from the eyes.

Choice D rationale:

Asking the client to count the number of fingers held up by the nurse before irrigating their eyes is not relevant in this situation. The priority is to initiate immediate irrigation to remove the chemical from the eyes. Assessing the client's visual acuity can be done later in the evaluation process after the eyes have been irrigated.