An 18 year old man is evaluated for possible immunodeficiency disease because of a life-long history of chronic lung infections, recurrent otitis media, and multiple episodes of bacterial meningitis. While total IgG is normal, the patient is found to have a selective deficiency of IgG2. An associated deficiency of which of the following other substances may produce anaphylaxis when blood products are given to such individuals?
An 18 year old man is evaluated for possible immunodeficiency disease because of a life-long history of chronic lung infections, recurrent otitis media, and multiple episodes of bacterial meningitis. While total IgG is normal, the patient is found to have a selective deficiency of IgG2. An associated deficiency of which of the following other substances may produce anaphylaxis when blood products are given to such individuals?
💡 Explanation
An 18 year old man is evaluated for possible immunodeficiency disease because of a life-long history of chronic lung infections, recurrent otitis media, and multiple episodes of bacterial meningitis. While total IgG is normal, the patient is found to have a selective deficiency of IgG2. An associated deficiency of which of the following other substances may produce anaphylaxis when blood products are given to such individuals?
✓ Correct Answer: C. IgA
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