A nurse is caring for a client who is at 35 weeks of gestation and is receiving magnesium sulfate for treatment of preeclampsia.
Which of the following findings indicates that the medication is having the desired effect?

Choice A rationale

While monitoring vital signs (temperature, heart rate, and blood pressure) is important for overall maternal assessment, in the context of strong contractions and reported nausea/urge to defecate, these specific vital signs are not the immediate priority for identifying the most critical complication. Normal temperature is 36.5-37.5°C, heart rate 60-100 bpm, blood pressure 90/60 to 120/80 mmHg.

Choice B rationale

The client's symptoms (strong contraction, nausea, urge to defecate) strongly suggest the second stage of labor, specifically an urge to push. The highest priority is to determine the fetal heart rate in relationship to the contraction, as this immediate assessment evaluates fetal well-being and detects potential distress, like late decelerations, indicating uteroplacental insufficiency.

Choice C rationale

Examining vaginal discharge for meconium is important if there are signs of fetal distress, but assessing the fetal heart rate pattern in relation to contractions directly provides real-time information about fetal oxygenation and is therefore the immediate priority when assessing labor progress with these symptoms.

Choice D rationale

Performing a vaginal examination to assess labor progress is a crucial step to confirm cervical dilation and fetal descent. However, before internal examination, ensuring fetal well-being through external monitoring of the fetal heart rate during contractions is paramount, especially with the client's reported symptoms suggesting advanced labor.

Choice A rationale

Bladder distention upon palpation indicates urinary retention, not effective voiding. When the bladder remains distended, it signifies incomplete emptying, which can lead to urinary stasis and increased risk of urinary tract infections. Effective voiding requires coordinated detrusor muscle contraction and urethral sphincter relaxation, which is absent with distention.

Choice B rationale

A uterine fundus 2 cm above the umbilicus, especially in the postpartum period, suggests uterine atony and possible bladder distention. A full bladder can displace the uterus upward and to the side, preventing effective uterine contraction and involution, which is crucial for preventing postpartum hemorrhage. Normal fundal height should decrease daily.

Choice C rationale

Not feeling the urge to urinate could indicate nerve damage, overdistention with sensory nerve suppression, or a very low urine output. Normal bladder sensation is crucial for effective voiding. The absence of the urge may lead to prolonged bladder distention, increasing the risk of infection and bladder dysfunction, which hinders efficient emptying.

Choice D rationale

Urinating 30 mL/hr, while seemingly low, is a continuous output and suggests the client is able to empty their bladder, albeit slowly. Postpartum diuresis typically begins within 12 hours, with urine output of 100 to 250 mL/hr common. However, any consistent output, rather than retention, indicates some voiding effectiveness.