A nurse is caring for a client who is pregnant and has a vaginal culture that is positive for chlamydia. Which of the following medications should the nurse plan to administer?

A) Incorrect- A 20-gauge needle is too large and could cause unnecessary pain for the newborn.
B) Correct - Choosing a 3/8-inch needle is appropriate for administering vaccines to newborns. he hepatitis B vaccine is given intramuscularly in the anterolateral thigh of newborns. The needle size should be appropriate for the muscle mass and age of the infant. A 3/8-inch needle is recommended for newborns, while a 20-gauge needle is too large and may cause tissue damage.
C) Incorrect- Administering the vaccine into the dorsal gluteal muscle is not recommended because of the risk of injury to the sciatic nerve; the recommended site is the vastus lateralis muscle in the anterolateral thigh.
D) Incorrect- The hepatitis B vaccine is usually administered in a dose of 0.5 mL for newborns, but this is not the only action that the nurse should take.

A) Incorrect- Administering medication into the deltoid muscle is not typically done in newborns. Phytonadione is given intramuscularly, usually in the vastus lateralis muscle, not the deltoid muscle.
B) Incorrect- Phytonadione should be given within 1 hour of birth, not 12 hours after birth. Delaying the administration increases the risk of bleeding complications.
C) Correct- The size of the needle is important for the newborn's comfort, A 25-gauge needle is the appropriate size for administering phytonadione to a newborn. A smaller needle may not deliver the medication adequately, and a larger needle may cause more tissue damage and bleeding.
D) Incorrect- The mother's Rh factor is irrelevant for the administration of phytonadione.

Rh factor affects the risk of hemolytic disease in the newborn, which is a different condition from hemorrhagic disease.