Which newborn reflex is elicited by stroking the lateral sole of the infant's foot from the heel to the ball of the foot?

Choice A rationale

Hourly monitoring of deep tendon reflexes is crucial in clients receiving magnesium sulfate for severe preeclampsia. Magnesium sulfate acts as a central nervous system depressant, and diminished or absent deep tendon reflexes (normal range: 2+ to 4+) can indicate magnesium toxicity, necessitating immediate intervention to prevent serious complications like respiratory depression.

Choice B rationale

A urinary output of less than 30 mL per hour signals potential renal hypoperfusion, which can be exacerbated by severe preeclampsia and magnesium sulfate administration. Reduced kidney function can lead to the accumulation of magnesium, increasing the risk of toxicity. Prompt notification of the physician allows for timely adjustments in the treatment plan.

Choice C rationale

Calcium gluconate is the antidote for magnesium sulfate overdose. Having it readily available is essential in case the client exhibits signs of magnesium toxicity, such as respiratory depression, severe hypotension, or loss of reflexes. Prompt administration of calcium gluconate can reverse the effects of magnesium and prevent life-threatening complications.

Choice E rationale

Hourly monitoring of intake and output is vital to assess fluid balance and renal function in pregnant clients with severe preeclampsia receiving magnesium sulfate. Accurate measurement helps in detecting oliguria, a sign of worsening preeclampsia or magnesium toxicity, allowing for timely interventions to maintain adequate hydration and prevent complications.

Choice F rationale

Severe preeclampsia significantly impacts both renal and cardiac function due to widespread vasoconstriction and endothelial dysfunction. Close monitoring of these systems through laboratory tests (e.g., serum creatinine, BUN, electrolytes, ECG) and clinical assessments is essential to detect and manage potential complications such as acute kidney injury, heart failure, and arrhythmias.

Choice A rationale

While documenting findings is a crucial nursing responsibility, a white blood cell count of 28,000 mm³ in a newborn is significantly elevated. The normal range for a newborn's WBC count is typically between 9,000 to 30,000 mm³, but a value at the higher end or exceeding this range warrants further investigation to rule out infection or other underlying conditions. Simply documenting without further action could delay necessary interventions.

Choice B rationale

A WBC count of 28,000 mm³ in a newborn raises suspicion for neonatal sepsis, a serious bloodstream infection. Unit protocols for a sepsis workup typically involve obtaining blood cultures, a complete blood count with differential, and potentially a lumbar puncture and chest X-ray to identify the source and extent of infection. Prompt initiation of these measures is critical for timely diagnosis and treatment, improving the newborn's prognosis.

Choice C rationale

Taking vital signs is a standard nursing assessment, but in the presence of an abnormal lab value suggestive of a serious condition like sepsis, it is insufficient as the sole action. While changes in vital signs can indicate infection, they may not be present in the early stages. Notifying the provider is necessary, but initiating a sepsis workup concurrently based on unit protocol allows for quicker diagnostic evaluation.

Choice D rationale

A heel stick for a bedside blood glucose reading is indicated for assessing hypoglycemia, a common concern in newborns, particularly those at risk. However, it does not directly address the significantly elevated WBC count. While infection can sometimes affect blood glucose levels, this test would not provide information about the potential underlying cause of the leukocytosis.