A 70-year-old patient has just received a drug that can cause sedation. What would be the priority nursing diagnosis for this patient?

a) Noncompliance due to cost might be a concern for some patients, but it does not directly relate to the sedative effects of the drug. b) Deficient knowledge could be relevant if the patient is unaware of the potential sedative effects, but the immediate concern is more focused on the potential for injury due to sedation. c) Risk for injury is the priority nursing diagnosis in this scenario because sedation can impair the patient's ability to perform tasks safely, increasing the risk for falls or other injuries. This is particularly important for elderly patients, who are more vulnerable to the sedative effects of medications. d) Ineffective health maintenance refers to issues with ongoing health practices, but it is less directly related to the immediate risk posed by the sedative effects of the medication.