A Patient Has Been Admitted with Anaphylactic Shock Due to an Unknown

question 4

Multiple Choice

A patient has been admitted with anaphylactic shock due to an unknown allergen.The nurse understands that the patient is probably having an immunoglobulin E (IgE) -mediated response as a result of what physiologic mechanism?

• A) Direct activation of mast cells and basophils
• B) Nonimmunologic stimulation of biochemical mediators
• C) Repeat exposure to an antigen in the presence of preformed IgE antibodies
• D) Activation of the systemic inflammatory response

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Definitions:

Optimum Interstimulus Interval

The ideal time gap between the presentation of a conditioned stimulus and an unconditioned stimulus for effective associative learning to occur.

Knee-Jerk Reflex

A reflexive action produced by a sharp tap on the tendons just below the kneecap, demonstrating the patellar reflex.

CS

Stands for Conditioned Stimulus, which is a previously neutral stimulus that, after becoming associated with an unconditioned stimulus, eventually comes to trigger a conditioned response.

UCS

Unconditioned Stimulus, an aspect of classical conditioning; a stimulus that naturally triggers a reflexive or unconditioned response without prior learning.