During a preoperative assessment, a nurse documents that the client has a history of vertigo and orthostatic hypotension. These findings place the client at high risk for which postoperative complication?

A. While older adults are at risk for postoperative delirium, vertigo and orthostatic hypotension are specifically vestibular and hemodynamic issues rather than primary cognitive risk factors. Delirium is more closely linked to polypharmacy, anesthesia effects, and sleep deprivation. Although physiological stress contributes to confusion, these specific findings more directly jeopardize physical stability and safety during mobilization. B. Malnutrition is an assessment finding related to chronic dietary intake, metabolic demands, or malabsorption syndromes rather than acute balance or blood pressure fluctuations. Vertigo may cause temporary nausea, but it does not serve as a primary predictor for postoperative nutritional failure. The nurse should focus on the immediate physical dangers posed by the client's inability to maintain an upright, stable posture. C. Postoperative pain is an expected outcome of surgical trauma and is influenced by the type of procedure and individual pain thresholds. A history of vertigo or orthostatic hypotension does not increase the physiological intensity or perception of surgical pain. These conditions are cardiovascular and neurological in nature, primarily affecting the client's coordination and autonomic response to changes in position. D. Vertigo causes a sensation of spinning and impaired balance, while orthostatic hypotension leads to a sudden drop in blood pressure upon standing, causing dizziness or syncope. In the postoperative period, where anesthesia and analgesics further impair coordination, these preexisting conditions significantly escalate the risk of accidental falls. The nurse must implement strict fall precautions to ensure the client's safety during early ambulation.