An older client is receiving an IV of 0.9% Normal Saline solution at 75 mL/hour. Which finding indicates to the practical nurse that the client may be developing a complication from this therapy?

A. Episodes of vertigo and loss of balance: These findings are more commonly associated with vestibular or neurological disorders rather than IV fluid complications. They do not directly indicate fluid overload or electrolyte imbalance from normal saline infusion. B. Fatigue and breathlessness upon exertion: These symptoms suggest fluid volume excess, which can occur when IV fluids accumulate faster than the body can handle. Older adults are especially prone to heart failure and pulmonary congestion, leading to dyspnea and generalized fatigue from decreased oxygen exchange. C. Apical pulse rate of 64 beats/minute: A pulse rate within this range is normal for many adults and does not indicate fluid imbalance or overload. It reflects a stable cardiovascular status rather than a complication of IV therapy. D. Average 24-hour urinary output of 1,400 mL: This urinary output is within normal limits for an adult (about 30 mL/hour minimum). It indicates adequate renal function and does not signal fluid overload or retention related to IV therapy.