Which assessment on the third postpartum day would indicate to the nurse that a client is experiencing uterine subinvolution?

Choice A rationale

Bright red lochia with large clots suggests uterine atony, which is a failure of the uterine muscles to contract properly. This indicates that the oxytocin is not effective in promoting uterine contraction, which is necessary to control postpartum bleeding. Uterine atony is a leading cause of postpartum hemorrhage, and this finding is a sign of an ongoing bleeding problem, not a sign of effective medication.

Choice B rationale

A firm fundus indicates the uterine muscles are contracting effectively, which compresses blood vessels and prevents excessive bleeding. Oxytocin is a synthetic analog of the naturally occurring hormone oxytocin, and it works by stimulating these smooth muscle contractions in the uterus. Therefore, a firm fundus is the desired therapeutic effect and indicates the medication is working as intended.

Choice C rationale

A boggy fundus signifies a relaxed, poorly contracted uterus. This allows for blood vessels to bleed freely, increasing the risk of postpartum hemorrhage. This is the opposite of the desired effect of oxytocin and indicates that the medication is not effectively promoting uterine contraction to control bleeding.

Choice D rationale

Absent lochia postpartum is not a normal finding and may indicate an issue such as uterine retention of placental fragments or a blood clot, or an abnormal uterine position. The normal progression of lochia (a vaginal discharge after childbirth) is a physiological process that should occur regardless of medication effectiveness. Absent lochia does not demonstrate a normal physiological response to oxytocin.

Choice A rationale

The mother is O- and the newborn is A+, which creates a risk for Rh incompatibility. The mother's body has been exposed to the Rh-positive antigens from the newborn, potentially leading to the development of anti-Rh antibodies. To prevent the mother's immune system from developing these antibodies, which could affect a future Rh-positive pregnancy, a Rho (D) Immune Globulin injection must be administered. This injection needs to be given within 72 hours of delivery.

Choice B rationale

It is incorrect to educate the client that they do not require Rho (D) Immune Globulin. The Rh incompatibility between an Rh-negative mother and an Rh-positive newborn is the exact situation where Rho (D) Immune Globulin is indicated. The purpose of the injection is to prevent the maternal immune system from recognizing the Rh-positive fetal cells, thereby preventing the production of antibodies that could harm a subsequent pregnancy.

Choice C rationale

Advising the client to wait until their physician's appointment at the end of the week is inappropriate. Rho (D) Immune Globulin must be administered within 72 hours of delivery to be effective in preventing the sensitization of the mother's immune system. Delaying the injection beyond this window significantly reduces its effectiveness. Therefore, the injection must be given before the client is discharged from the hospital.

Choice D rationale

Informing the physician that the injection cannot be given due to the client being discharged is an inappropriate action. It is the nurse's responsibility to ensure that the client receives all necessary postpartum care before discharge. The Rho (D) Immune Globulin injection is a critical part of postpartum care for an Rh-negative mother with an Rh-positive newborn and must be administered within the hospital stay to ensure timely intervention