A nurse is caring for a client who is at 37 weeks of gestation and received a provider order for group B streptococcus beta-hemolytic culture.
Which of the following statements should the nurse include in the teaching?

Choice A rationale

Erb-Duchenne palsy, a form of brachial plexus injury (C5-C6), primarily affects the nerves controlling the shoulder and upper arm muscles. It generally does not affect cranial nerves (such as IX and X, which control swallowing) or the muscles of the mouth, thus typically preserving the ability to suck and swallow.

Choice B rationale

The Moro (startle) reflex involves symmetrical extension and abduction of the arms followed by adduction and flexion. An injury to the brachial plexus on one side impairs the motor function of that arm, resulting in the characteristic absence of the reflex in the affected extremity, which is a key diagnostic finding.

Choice C rationale

The Babinski reflex is a normal neurological finding in infants up to about 2 years old, reflecting immature corticospinal tracts. It is a foot reflex and is unrelated to a brachial plexus injury in the neck and shoulder area; thus, its presence is not a specific finding for Erb-Duchenne palsy.

Choice D rationale

Cleft palate is a congenital craniofacial malformation resulting from incomplete fusion of the palatine shelves during fetal development. It is a structural anomaly of the mouth and is not a finding or complication associated with Erb-Duchenne palsy, which is a neuromuscular injury sustained, most commonly, during birth.

Choice A rationale

Misoprostol is a prostaglandin analog used to prevent or treat postpartum hemorrhage by inducing uterine contractions, but it is not the primary intervention for preeclampsia without severe features, which focuses on blood pressure control and seizure prophylaxis.

Choice B rationale

Administering an IV bolus of lactated Ringer's is generally contraindicated in preeclampsia because it can increase the risk of pulmonary edema due to generalized fluid retention and increased capillary permeability characteristic of the disorder. Fluid management should be conservative.

Choice C rationale

Clonus, which is the presence of rhythmic, involuntary muscle contractions, is a sign of hyperreflexia and central nervous system irritability. It indicates worsening preeclampsia and the potential progression to eclampsia (seizures), necessitating close neurological assessment for timely intervention.

Choice D rationale

Restricting daily oral fluid intake can lead to dehydration and is not a standard or necessary practice for preeclampsia management without severe features, unless there is evidence of pulmonary edema or acute kidney injury. The focus is on careful fluid balance, not routine restriction.