Which of the following would constitute a normal assessment finding in a neonate?
A) Minimal or absent levels of IgA and IgM
B) Absence of plasma cells in the lymph nodes and spleen
C) Undetectable levels of all immunoglobulins
D) Absence of mature B cells with normal T-cell levels and function
Ans: A
Feedback:
IgA and IgM levels are normally low in the neonate because these immunoglobulins do not cross the placental barrier. An absence of plasma cells in the lymph nodes and spleen accompanies common variable immunodeficiency. An absence of mature B cells with normal T-cell levels and function, as well as undetectable levels of all immunoglobulins, is a pathologic finding in X-linked agammaglobulinemia.
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