Final answer:
Neutropenia can be caused by chemotherapy, congenital conditions, and infection, especially with chronic or severe infections such as HIV/AIDS. Secondary factors such as diabetes mellitus and malnutrition can also contribute to the risk.
Step-by-step explanation:
The client is at risk for neutropenia due to a number of factors. Among the options provided:
- Chemotherapy certainly places a client at risk for neutropenia, as it can destroy leukocytes including neutrophils.
- Smoking has not been clearly linked to neutropenia; it causes various other health issues.
- Excessive exercise might temporarily alter white blood cell counts, but it is not a common cause of neutropenia.
- Certain Congenital conditions, such as severe combined immunodeficiency or agammaglobulinemia, can result in neutropenia.
- Infection, particularly chronic or severe infections like HIV/AIDS, can also lead to neutropenia.
Secondary factors including systemic disorders such as diabetes mellitus, HIV/AIDS, severe malnutrition, and certain types of infections can increase the risk of developing neutropenia as well.