A nurse is caring for a client who is experiencing severe pain during active labor.
Which of the following medications should the nurse plan to administer and document in the client's medical record?

Choice A rationale

Vacuum-assisted delivery increases the risk of postpartum hemorrhage due to potential trauma to the birth canal and uterine atony caused by prolonged pressure or rapid extraction. The vacuum device can bruise the cervix, vagina, or perineum, leading to lacerations that bleed excessively. It can also overstretch uterine muscles, impairing their ability to contract effectively after birth.

Choice B rationale

A newborn weight of 2.948 kg (6 lb 8 oz) is within the normal weight range for a full-term infant. This weight does not typically pose an increased risk for postpartum hemorrhage. Larger infants (macrosomia, generally > 4 kg) are associated with higher risks due to increased uterine stretching and potential for prolonged labor or birth trauma.

Choice C rationale

Labor induction with oxytocin significantly increases the risk for postpartum hemorrhage, particularly due to uterine atony. Prolonged oxytocin administration can lead to desensitization of myometrial receptors, reducing the uterus's ability to contract effectively postpartum. This impaired contractility prevents compression of uterine blood vessels, resulting in excessive bleeding.

Choice D rationale

A history of uterine atony is a substantial risk factor for recurrent postpartum hemorrhage. Uterine atony is the most common cause of postpartum hemorrhage, accounting for a majority of cases. A prior history indicates a predisposition for the uterine musculature to fail in contracting adequately after birth, leading to uncontrolled blood loss.

Choice E rationale

A history of human papillomavirus (HPV) infection does not directly increase the risk of postpartum hemorrhage. HPV is a viral infection that primarily affects epithelial cells, often leading to genital warts or cervical dysplasia. It does not inherently alter uterine contractility, coagulation factors, or predispose to abnormal placental implantation, which are direct causes of hemorrhage.

Choice A rationale

The critical congenital heart disease (CCHD) screening is typically performed when the newborn is between 24 and 48 hours of age, or just prior to discharge if that occurs earlier. Performing the test too early, such as between 6 and 12 hours, might yield false negative results due to the persistence of transitional circulation.

Choice B rationale

The results of the CCHD screening are typically available immediately, or within a few minutes, as it involves pulse oximetry readings. There is no waiting period of 1 to 2 weeks for the results, allowing for prompt identification and management of potential cardiac defects, preventing delays in care.

Choice C rationale

The CCHD screening specifically compares the oxygen saturation in the newborn's right hand (pre-ductal) and either foot (post-ductal). A significant difference between these two readings can indicate a shunt or obstruction within the heart or great vessels, suggesting a potential critical congenital heart defect.

Choice D rationale

Collecting a blood sample from the newborn's heel is the procedure for the newborn metabolic screening, which screens for various genetic and metabolic disorders, not the critical congenital heart disease screening. The CCHD screening is a non-invasive test performed using pulse oximetry.