A Gerontologic Nurse Is Teaching a Group of Medical Nurses

A gerontologic nurse is teaching a group of medical nurses about the high incidence and mortality of pneumonia in older adults. What is a contributing factor to this that the nurse should describe?

A) Older adults have less compliant lung tissue than younger adults.
B) Older adults are not normally candidates for pneumococcal vaccination.
C) Older adults often lack the classic signs and symptoms of pneumonia.
D) Older adults often cannot tolerate the most common antibiotics used to treat pneumonia.