ACRN Certification Practice Exam 2025 – Complete Study Resource

Pneumocystis pneumonia (PCP) is a common opportunistic infection associated with AIDS due to the immunocompromised state of individuals living with HIV. As the CD4 T-cell count decreases, typically below 200 cells/mm³, the risk of infections, including PCP, increases significantly. Pneumocystis jirovecii, the organism responsible for this form of pneumonia, is a fungus that can be found in the environment and typically does not cause illness in healthy individuals. However, in those with compromised immune systems like AIDS patients, it can lead to severe respiratory illness, characterized by symptoms such as cough, fever, and difficulty breathing.

In comparison, other choices such as chlamydia, diabetes, and asthma do not directly pertain to opportunistic infections seen primarily in individuals with AIDS. Chlamydia is a sexually transmitted infection that can affect anyone regardless of their immune status. Diabetes is a chronic health condition related to blood sugar regulation and is not an opportunistic infection. Asthma is a respiratory condition that is also not classified as an opportunistic infection, but rather a chronic inflammatory condition of the airways. Thus, recognizing PCP as a common opportunistic infection illustrates the importance of monitoring and managing complications associated with