NCLEX Question of the Day – Monday, June 15, 2026

Today’s NCLEX question targets priority action in a common pediatric emergency: dehydration from acute gastroenteritis. This matters in real nursing because children can worsen faster than adults. A nurse has to notice subtle signs, decide what needs attention first, and act before dehydration leads to poor perfusion or shock.

Clinical Scenario

A 3-year-old child is brought to a pediatric urgent care clinic by a parent for vomiting and diarrhea that started yesterday morning. The child has had 6 loose stools and 4 episodes of vomiting in the past 18 hours. The parent says, “He just wants to sleep and has barely had anything to drink since last night.”

The child weighs 14 kg. History includes no chronic illness and all immunizations are current. On assessment, the nurse notes dry lips, no tears when crying, cool hands, capillary refill of 3 to 4 seconds, and a heart rate of 148/min. The child is sleepy but wakes to voice. Temperature is 37.8 C, respiratory rate is 28/min, and blood pressure is 90/56 mm Hg. The child has had only one small wet diaper in the last 10 hours.

The Question

Which action should the nurse take first?

Answer Choices

1. A. Offer small sips of oral rehydration solution every 5 minutes
2. B. Place the child on a standing scale to obtain an accurate weight
3. C. Start an intravenous line for isotonic fluid replacement as prescribed
4. D. Administer an as-needed antiemetic to reduce vomiting

Correct Answer

C. Start an intravenous line for isotonic fluid replacement as prescribed

Detailed Rationale

This child is showing signs of moderate to severe dehydration with poor perfusion. The nurse should recognize several red flags together, not just one finding by itself.

• Tachycardia: A heart rate of 148/min is high for a 3-year-old and often appears early when children are volume depleted.
• Delayed capillary refill: Capillary refill of 3 to 4 seconds suggests decreased peripheral perfusion.
• Dry mucous membranes and no tears: These are classic signs of fluid deficit in children.
• Low urine output: One small wet diaper in 10 hours points to reduced kidney perfusion and worsening dehydration.
• Lethargy: Sleepiness and decreased activity are more concerning than a child who is alert and thirsty. Mental status changes can mean the body is struggling to maintain circulation.
• Cool extremities: This supports poor peripheral perfusion.

Because circulation is the priority, the first action is to restore intravascular volume. Isotonic IV fluids, such as normal saline, are used because they stay in the vascular space and help improve perfusion quickly. In a child who is lethargic and showing poor perfusion, oral rehydration may not be enough and may not be safe if the child cannot reliably drink without further vomiting.

After initiating IV access and fluids, the nurse should continue a focused assessment and monitoring plan:

• Reassess heart rate, blood pressure, capillary refill, skin temperature, and level of alertness
• Monitor intake and output closely, including urine output
• Obtain daily or serial weights to trend fluid status
• Watch for ongoing losses from vomiting and diarrhea
• Review lab work if ordered, especially electrolytes and glucose
• Assess the child’s ability to transition to oral rehydration once perfusion improves

In practice, this question is testing whether the nurse can separate a stable child with mild dehydration from a child who needs faster volume replacement. The key detail is not just diarrhea. It is the combination of sleepiness, delayed refill, tachycardia, and minimal urine. Those findings move this case into a higher-risk category.

Why the Other Options Are Wrong

A. Offer small sips of oral rehydration solution every 5 minutes

Oral rehydration is a good choice for mild to moderate dehydration when the child is alert enough to drink and perfusion is stable. It is not the best first action here because this child already shows signs of poor perfusion and decreased responsiveness. The nurse should stabilize circulation first.

B. Place the child on a standing scale to obtain an accurate weight

An accurate weight is useful, especially in pediatrics, because fluid replacement and medications are weight-based. But this is not the first priority. The child needs prompt fluid resuscitation. Weighing can happen once immediate circulation needs are addressed or can be done as soon as feasible without delaying treatment.

D. Administer an as-needed antiemetic to reduce vomiting

Reducing vomiting may help later, especially to support oral intake. But an antiemetic does not correct the immediate problem of intravascular volume depletion. Also, medication administration may require further evaluation and orders depending on the setting. The first need is fluid replacement.

Key Takeaways

• In children, dehydration can progress quickly because they have smaller fluid reserves.
• Tachycardia, delayed capillary refill, cool extremities, low urine output, and lethargy point to poor perfusion.
• When perfusion is compromised, IV isotonic fluids take priority over oral rehydration.
• Weight matters in pediatrics, but it should not delay urgent treatment.
• Reassessment is essential. Improvement should show up in mental status, heart rate, refill time, and urine output.

• On-shift mini-checklist:
• Look at mental status first: alert, irritable, or lethargic
• Check heart rate, capillary refill, extremity temperature, and mucous membranes
• Ask about wet diapers or urine output
• Start ordered isotonic fluids promptly if perfusion is poor
• Trend response after treatment, not just before it

Quick Practice Extension

1. A 10-month-old with diarrhea is alert, has moist lips, and drinks eagerly. What finding would support trying oral rehydration first rather than IV fluids?
2. After a fluid bolus, which reassessment finding best suggests that the child’s perfusion is improving?

Category for today: Pediatrics

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