Which of the following would indicate the need for further education on lisinopril?

Choosing the statement that mentions the immediate effect of lisinopril on blood pressure indicates a misunderstanding of how the medication works. Lisinopril, an angiotensin-converting enzyme (ACE) inhibitor, does not provide an immediate reduction in blood pressure. Instead, it may take several hours to days for the full effect to be observed as the drug works by inhibiting the enzyme responsible for the conversion of angiotensin I to angiotensin II, thereby relaxing blood vessels over time.

The other statements reflect a sound understanding of the medication. Monitoring potassium levels is crucial because lisinopril can cause hyperkalemia, which is an elevated potassium level. Acknowledging a potential change in taste sensation is also valid, as it can be a side effect of ACE inhibitors. Lastly, recognizing that blood pressure stabilization may take time is an appropriate understanding of the medication's pharmacological action. Thus, the statement regarding immediate blood pressure reduction highlights the need for more education about how lisinopril functions and its timeline for effectiveness.