A 28-year-old woman who is at 16 weeks' gestation has just undergone screening for ABO incompatibility. She asks the nurse why her blood contains anti-A antibodies. What is the nurse's best response?
1. "Anti-A antibodies occur naturally, as a result of exposure to foods and different infections."
2. "It's most likely that you contracted anti-A antibodies through sexual activity."
3. "Anti-A antibodies are inherited; usually, they are genetically passed down from father to daughter."
4. "You may have contracted anti-A antibodies as a result of a viral infection."
Correct Answer: 1
Rationale 1: Anti-A and anti-B antibodies are naturally occurring; that is, women are naturally exposed to the A and B antigens through the foods they eat and through exposure to infection by gram negative bacteria.
Rationale 2: Anti-A and anti-B antibodies are naturally occurring; that is, women are naturally exposed to the A and B antigens through the foods they eat and through exposure to infection by gram negative bacteria.
Rationale 3: Women develop anti-A and anti-B antibodies naturally as a result of exposure to the A and B antigens through the foods they eat and through exposure to infection by gram negative bacteria.
Rationale 4: Women develop anti-A and anti-B antibodies as a result of exposure to the A and B antigens through infection by gram negative bacteria, as well as through exposure to the foods they eat.
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