A nurse assesses a newborn's lab values and notes a WBC of 28,000 mm³. What action by the nurse is best?
Document the findings in the infant's chart.
Follow unit protocol to initiate a sepsis workup.
Take a set of vital signs and notify the provider.
Perform a heel stick for a bedside blood glucose reading.
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
A displaced fundus from the midline, often deviated to the right and boggy, suggests a full bladder interfering with uterine contraction and involution. A distended bladder prevents the uterus from clamping down effectively, increasing the risk of postpartum hemorrhage. Immediate intervention is required to assist the client in emptying her bladder, which should allow the uterus to return to the midline and contract firmly.
Choice B rationale
A fundal height below the umbilicus on the first postpartum day is a normal finding. Following delivery, the uterus begins to descend approximately one fingerbreadth (1 cm) per day. Therefore, a fundus below the umbilicus at 24 hours postpartum indicates normal uterine involution.
Choice C rationale
A decreased urge to void is common in the immediate postpartum period due to factors such as perineal swelling, pain, and the effects of anesthesia. While it's important to monitor urinary output, a decreased urge to void in the first 24 hours is not typically considered a finding requiring immediate intervention unless accompanied by other signs of urinary retention or bladder distension.
Choice D rationale
Increased urine output is also a normal finding in the postpartum period as the body eliminates excess fluid volume accumulated during pregnancy. Diuresis typically begins within 12 to 24 hours after delivery and can last for several days. This is a physiological process and does not require immediate intervention.
Correct Answer is D
Explanation
Choice A rationale
Fetal hypoxemia, a deficiency in oxygen reaching the fetal tissues, typically manifests as late decelerations in the fetal heart rate tracing, which reflect uteroplacental insufficiency. While severe hypoxemia can lead to various FHR patterns, variable decelerations are more directly associated with mechanical factors affecting the umbilical cord.
Choice B rationale
Altered fetal cerebral blood flow can be a consequence of various factors, including hypoxemia and cord compression, and can influence the fetal heart rate. However, variable decelerations are specifically caused by events that directly impede blood flow through the umbilical vessels rather than a generalized alteration in cerebral circulation.
Choice C rationale
Uteroplacental insufficiency, a condition where the placenta is unable to deliver an adequate supply of oxygen and nutrients to the fetus, typically results in late decelerations, indicating fetal distress due to chronic hypoxia. Variable decelerations, in contrast, have a more abrupt onset and recovery, reflecting acute changes in umbilical cord blood flow.
Choice D rationale
Umbilical cord compression occurs when the umbilical cord, which carries oxygen and nutrients to the fetus, is squeezed or constricted. This compression leads to a transient decrease in fetal blood flow and oxygenation, resulting in a rapid drop and subsequent return of the fetal heart rate, which is characteristic of variable decelerations. The shape, timing, and abrupt nature of variable decelerations directly correlate with the intermittent pressure on the umbilical cord.
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