The nurse is caring for a patient diagnosed with a lung infection. Which immunoglobulin level should the nurse expect to be elevated in this patient?
1. immunoglobulin A
2. immunoglobulin M
3. immunoglobulin E
4. immunoglobulin D
Correct Answer: 1
Immunoglobulins are made in response to a primary or initial exposure to an antigen. Immunoglobulin A is most commonly found in secretions, and its major function is to protect the eyes, mouth, nose, gastrointestinal tract, and lungs from diseases caused by viruses and bacteria. For the patient with a lung infection, this immunoglobulin level will likely be the highest. Immunoglobulin M is the first antibody produced in the primary immune response and is first produced during embryonic development. Immunoglobulin E is the primary antibody in the allergic response. Immunoglobulin D is the cell that is least understood and is present in small quantities in the blood.
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