Which term describes an extreme hypersensitivity reaction that can lead to shock and life-threatening respiratory collapse?

Which term describes an extreme hypersensitivity reaction that can lead to shock and life-threatening respiratory collapse?

• A. Anaphylaxis
• B. Artificially Acquired Immunity
• C. Blood-Borne Disease
• D. Droplet Infection

Answer: (A)

An extreme hypersensitivity reaction that rapidly affects multiple body systems, potentially causing shock and life-threatening respiratory collapse, is anaphylaxis. In anaphylaxis, the body dumps large amounts of chemical mediators from mast cells and basophils in response to an allergen. This can cause the airways to swell and constrict, the throat to tighten, widespread hives, and a dangerous drop in blood pressure. Because it can escalate quickly, it’s a medical emergency that requires immediate treatment with epinephrine and urgent care. The other terms describe different concepts: artificially acquired immunity refers to protection gained through vaccines or prior exposure, not a dangerous reaction; a blood-borne disease involves infections transmitted through blood; and droplet infection refers to diseases spread by respiratory droplets. None of these describe the severe, systemic allergic reaction that characterizes anaphylaxis.

An extreme hypersensitivity reaction that rapidly affects multiple body systems, potentially causing shock and life-threatening respiratory collapse, is anaphylaxis. In anaphylaxis, the body dumps large amounts of chemical mediators from mast cells and basophils in response to an allergen. This can cause the airways to swell and constrict, the throat to tighten, widespread hives, and a dangerous drop in blood pressure. Because it can escalate quickly, it’s a medical emergency that requires immediate treatment with epinephrine and urgent care.

The other terms describe different concepts: artificially acquired immunity refers to protection gained through vaccines or prior exposure, not a dangerous reaction; a blood-borne disease involves infections transmitted through blood; and droplet infection refers to diseases spread by respiratory droplets. None of these describe the severe, systemic allergic reaction that characterizes anaphylaxis.