Anesthesia Technologist Practice Exam

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What is a characteristic of Type IV hypersensitivity in relation to latex exposure?

Immediate systemic response
Localized rash that develops within minutes
Delayed reaction related to exposure
Reaction occurs only with direct contact

The correct answer is: Delayed reaction related to exposure

Type IV hypersensitivity is characterized by a delayed reaction and is mediated by T lymphocytes rather than antibodies. This immune response typically occurs hours to days after exposure to an allergen, such as latex. In relation to latex exposure, individuals who have developed a Type IV hypersensitivity may experience symptoms like dermatitis, which can take time to manifest after contact with latex products. The nature of Type IV hypersensitivity means that the response is not immediate, distinguishing it from other types of hypersensitivity reactions, such as Type I, which involve an immediate systemic response or localized reactions within minutes. Hence, it is appropriate to identify a delayed reaction as a key characteristic when considering Type IV hypersensitivity related to latex exposure.