The Nurse Caring for an Older Patient with Influenza Emphasizes

The nurse caring for an older patient with influenza emphasizes the importance of drinking plenty of fluids and getting adequate rest to prevent the development of complications. What physiological changes is the nurse most concerned about in this patient?

A) reduced thirst reflex
B) altered hypothalamic response
C) increased residual lung volume
D) reduced effectiveness of cough
E) muted chemoreceptors in the aortic arch