When a client reports using cocaine during her current pregnancy, which laboratory study should a nurse anticipate?

The correct answer is choice D. Apply petrolatum to the patient’s perineum.This is because petrolatum can help soothe and protect the perineal area, which may be swollen, bruised, or have stitches after a vaginal delivery.Applying petrolatum can also prevent the pad from sticking to the wound and causing more pain.

Choice A is wrong because observing the patient for vaginal discharge of bright red blood is not a specific action for perineal care.Bright red blood may indicate postpartum hemorrhage, which requires immediate medical attention.

Choice B is wrong because assessing the patient’s vaginal tone is not a priority action for perineal care.Vaginal tone may be reduced after childbirth due to stretching of the pelvic floor muscles, but this can improve with time and exercises.

Choice C is wrong because massaging the patient’s perineum is not recommended for perineal care.Massaging the perineum may cause more trauma and discomfort to the area, especially if there are stitches or hemorrhoids.Massaging the fundus (the top of the uterus) may be done to help it contract and prevent bleeding, but this is different from massaging the perineum.

The correct answer is choice A. The patient has heart disease, and the antibiotics will decrease the risk to her fetus of developing endocarditis.Endocarditis is an infection of the inner lining of the heart and valves, which can be caused by bacteria entering the bloodstream during labor and delivery.Patients with mitral valve prolapse (MVP) are more prone to develop endocarditis because their valve leaflets are floppy and do not close tightly, creating a site for bacterial attachment.Antibiotics can help prevent this complication by killing the bacteria before they reach the heart.

Choice B is wrong because pericarditis is an inflammation of the outer layer of the heart, not the inner lining or valves.It is not related to MVP or bacterial infection.

Choice C is wrong because chorioamnionitis is an infection of the membranes and fluid that surround the fetus, not the heart.It is usually caused by bacteria ascending from the vagina or cervix, not from the bloodstream.

Choice D is wrong because delivering post-term does not increase the risk of systemic infection for the fetus.Systemic infection means infection that affects multiple organs or systems in the body, not just one specific site.