A 10-year-old boy has been brought to the emergency department (ED) by ambulance in apparent anaphylaxis after accidentally eating a snack bar that contained peanuts.
The ED nurse should be aware that this patient's signs and symptoms are attributable to:
A) Dissolution of the basement membranes of epithelium
B) Rapid activation of the clotting cascade
C) A massive release of histamine
D) Activation of the sympathetic nervous system (SNS)
Question 2
A middle-aged woman suffers from debilitating seasonal allergies and has sought care because over-the-counter remedies do not adequately relieve her symptoms.
The clinician's understanding of the patient's problem should include the fact that hypersensitivity is a result of what pathophysiological process?
A) An exaggerated, inappropriate response to an antigen
B) Deranged function of killer T cells and helper T cells
C) Lack of self and non-self differentiation by the immune system
D) A lack of antibodies against common pathogens
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