A nurse is caring for a client who has just delivered her first newborn. The nurse anticipates hyperbilirubinemia due to Rh incompatibility. The nurse should understand that hyperbilirubinemia occurs with Rh incompatibility for which of the following reasons?

Choice A rationale:

The nurse should plan to administer Ampicillin to the client with a group B streptococcus (GBS) B-hemolytic infection. Ampicillin is the first-line antibiotic treatment for intrapartum prophylaxis in GBS-positive pregnant women. It helps prevent the transmission of the bacteria from the mother to the newborn, reducing the risk of early-onset GBS infection in the infant.

Choice B rationale:

Azithromycin is not the appropriate choice for treating GBS B-hemolytic infection during labor. While Azithromycin is effective against certain bacteria, it is not the recommended antibiotic for GBS prophylaxis in labor. Ampicillin or Penicillin is the preferred medication in this scenario.

Choice C rationale:

Ceftriaxone is not the appropriate medication for treating GBS B-hemolytic infection during labor. Ceftriaxone belongs to the cephalosporin class of antibiotics and is not the first-line treatment for GBS prophylaxis. Ampicillin or Penicillin is the preferred choice.

Choice D rationale:

Acyclovir is an antiviral medication and is not indicated for the treatment of GBS B-hemolytic infection. GBS is a bacterial infection, and antiviral medications like Acyclovir do not have an effect on bacteria.

Choice A rationale:

High calcium levels are not typically associated with the use of anastrozole, an aromatase inhibitor. Aromatase inhibitors work by blocking the conversion of androgens to estrogens, and they do not directly impact calcium levels.

Choice B rationale:

Muscle and joint pain is a common side effect of aromatase inhibitors like anastrozole. These medications can lead to musculoskeletal discomfort, including joint stiffness and pain, which the nurse should inform the client about to ensure she is aware of potential adverse effects.

Choice C rationale:

Heart failure is not a known side effect of anastrozole. The drug's primary concern is its impact on the musculoskeletal system, particularly causing joint and muscle pain.

Choice D rationale:

Polyphagia, which refers to excessive hunger and increased food intake, is not associated with the use of anastrozole. This choice is unrelated to the side effects of the medication and can be ruled out.