Only for the bad ones! - explanation

[ArchivalUser]

A 25 yrs male pt being transfused with erythrocytes and fresh frozen plasma has a systemic anaphylactic reaction after a motorcycle collision and has a history of recurrent respiratory tract infections. Blood hemoglobin concentration is 6.5, and circulating B and T lymphocyte counts are normal. What is the most likely explanation of these findings?
1. IgA agammagloblinemia
2. Common variable immunodeficiency
3. X-linked agammaglobulinemia

[ArchivalUser]

1 ????????

[ArchivalUser]

2. Ig is low.

[ArchivalUser]

IgA agammaglobunemia

[ArchivalUser]

why not 2 ?
older
acquired
low Ig (current bacterial infection)

[ArchivalUser]

where is this q from?

it could be 1 or 2 as CVID can be low IgA or IgG.

I'd go with 2.