The nurse is caring for a client who experiences anxiety and insomnia and is prescribed lorazepam. When developing the plan of care, what would be an appropriate nursing diagnosis related to potential adverse effects of the drug?

A. Ineffective tissue perfusion related to vasoconstriction: Lorazepam does not cause vasoconstriction or impair tissue perfusion. It more commonly causes vasodilation and CNS depression, making this diagnosis unrelated to the drug’s adverse effects. B. Fear related to rebound effects following therapy: Rebound effects such as increased anxiety or insomnia can occur with abrupt discontinuation, but fear is not the most clinically significant or immediate concern when developing a safety-focused nursing care plan. C. Risk for injury related to central nervous system (CNS) effects: Lorazepam can cause dizziness, sedation, impaired coordination, and confusion, especially in older adults. These CNS effects increase the risk of falls or accidents, making injury prevention a priority in the nursing plan. D. Chronic confusion related to decreased arousal: Lorazepam may cause acute confusion or drowsiness, particularly in the elderly, but "chronic" confusion implies a long-term cognitive decline, which is not typical with intermittent or short-term use of this medication.