A client with orthopnea expresses concern about the ability to "Get enough air" during a scheduled thoracentesis. On which information should the nurse's response be based?

A. Orthopnea is frequently caused by a client's uncontrolled anxiety: Orthopnea is a physical symptom caused by impaired lung expansion or fluid overload not anxiety. While anxiety can worsen dyspnea, attributing the cause to this alone overlooks the true pathophysiology. B. Thoracentesis is a brief procedure that has minimal discomfort: Although true, this information does not address the client’s concern about breathing difficulty. Reassurance about discomfort is less relevant than explaining how positioning will help with breathing. C. The procedure is performed with the client in an upright position: Sitting upright during thoracentesis allows better lung expansion, reduces orthopnea, and makes it easier for the client to breathe. This directly addresses the client’s concern about "getting enough air" during the procedure. D. Extra pillows can be used if needed to elevate the client's head: Pillows can provide comfort, but they are not the primary positioning method used in thoracentesis. The upright position, often leaning slightly forward, is the standard approach to facilitate breathing and access to the pleural space.