Which client is expected to develop IgE antibodies?

The development of IgE antibodies is closely associated with allergic reactions, particularly to environmental allergens such as pollen. When an individual is exposed to allergens like pollen, the immune system can mistakenly identify these benign substances as harmful. This triggers the production of IgE antibodies, which bind to allergens and activate mast cells and basophils, leading to the release of histamines and other chemicals that cause allergy symptoms.

In contrast, reactions such as those seen in poison ivy exposure do not primarily involve IgE antibodies; instead, they are typically mediated by T cells in response to contact allergens. Bacterial infections activate different arms of the immune system, primarily involving IgM and IgG production as part of the adaptive immune response. Blood transfusions can provoke various types of immune responses, but they do not specifically lead to the development of IgE antibodies unless there is an allergic reaction to proteins in the donor blood.

Thus, the client with a pollen allergy is expected to develop IgE antibodies due to the nature of the allergic response associated with environmental allergens.