A nurse is assisting with the care of a client who is scheduled to receive a dose of ceftriaxone The nurse has reviewed the client's electronic medical record (EMR). Which of the following findings should the nurse recommend withholding the ceftriaxone? Select all that apply.

A. Breastfeeding. Ceftriaxone is generally considered safe during breastfeeding because only a small amount is excreted in breast milk. While monitoring for gastrointestinal disturbances or thrush in the infant is advised, breastfeeding is not a contraindication for ceftriaxone use. B. Client allergy. The client has a penicillin allergy, which raises concerns about cross-reactivity with cephalosporins, including ceftriaxone. Although the cross-reactivity rate is low, clients with a history of severe allergic reactions (e.g., anaphylaxis, angioedema, or urticaria) to penicillin should avoid cephalosporins. The nurse should clarify the nature of the penicillin allergy before administering ceftriaxone. C. Gentamycin prescription. Ceftriaxone and gentamicin are both nephrotoxic, and using them together increases the risk of kidney damage. The client should be monitored for renal function impairment, and alternative antibiotic therapy may be considered if necessary. The nurse should discuss this potential drug interaction with the provider before administration. D. Hematocrit. The client’s hematocrit (32%) is low but does not require withholding ceftriaxone. A slightly decreased hematocrit is expected postpartum, especially in cases of infection or recent delivery. Ceftriaxone is not known to cause significant hematologic suppression that would make this a contraindication. E. Hemoglobin. The client’s hemoglobin (9 g/dL) is lower than normal, likely due to postpartum blood loss or infection-related inflammation. However, ceftriaxone does not directly affect hemoglobin levels, so this is not a reason to withhold the medication.