Advanced Medical Life Support (AMLS)

Which factor does NOT contribute to the difficulty of identifying infectious diseases in geriatric patients?

1. History may be difficult to obtain

2. Fever may be absent

3. Frequent presence of underlying chronic illnesses

4. Heightened immune response is common

The correct answer is: Heightened immune response is common

The correct answer is based on the understanding that geriatric patients often have a diminished immune response rather than a heightened one. As individuals age, their immune system commonly becomes less effective, which can make the identification of infections more challenging. In many cases, older adults may not exhibit classic signs and symptoms of infection, such as fever, and their history may be complicated by multiple chronic illnesses, further obscuring the clinical picture. The difficulties in obtaining an accurate medical history stem from cognitive decline or communication issues that may be present in elderly individuals. Additionally, the absence of fever, which is a typical marker of infection, twists the usual presentation of infectious diseases in this age group. Chronic illnesses often mask or mimic the signs of infection, making diagnosis even harder. Overall, the unique aspects of the geriatric population—particularly their generally reduced immune responses—play a significant role in complicating the diagnosis of infectious diseases.