Pediatric Asthma Exacerbation with Respiratory Distress
A 7-year-old boy with a history of asthma is brought to the emergency department by his mother. He has been using his albuterol inhaler every 2 hours for the past 12 hours with minimal relief. On assessment, he is sitting upright, tripoding, and has audible wheezing. His respiratory rate is 36 breaths/min, heart rate 130 bpm, and oxygen saturation 88% on room air. He is using accessory muscles and has nasal flaring. His peak expiratory flow (PEF) is 50% of his personal best. The provider orders oxygen to maintain saturation >92%, nebulized albuterol 2.5 mg with ipratropium 0.5 mg, and oral prednisolone 2 mg/kg (he weighs 25 kg).
1. Calculate the dose of prednisolone. What is the priority nursing action and why?
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Prednisolone dose = 2 mg/kg × 25 kg = 50 mg. The priority nursing action is to administer oxygen to maintain saturation >92% and initiate the nebulized bronchodilator therapy. The child is in severe respiratory distress (RR 36, HR 130, SpO2 88%, accessory muscle use, PEF 50% of best). Oxygen is critical to correct hypoxemia. The nebulized albuterol and ipratropium will help bronchodilate. The nurse should also position the child upright, monitor continuously, and prepare for possible escalation if no improvement.
2. What are the signs of impending respiratory failure in this child?
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Signs of impending respiratory failure include:
- Silent chest: wheezing may decrease as airflow becomes too low to generate sound.
- Altered mental status: confusion, drowsiness, agitation.
- Cyanosis: late sign.
- Bradycardia: from hypoxia.
- Exhaustion: decreased respiratory effort, shallow breathing.
- Rising PaCO2: normal or elevated CO2 in a tachypneic child indicates fatigue.
- Paradoxical breathing: inward movement of abdomen during inspiration. The nurse should monitor for these and be ready to assist with intubation if needed.
3. After 1 hour, the child's oxygen saturation is 94% on 2 L nasal cannula, respiratory rate 28, and he is speaking in full sentences. The mother asks if he can go home. What is the nurse's response?
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The nurse should explain that the child has shown improvement but still requires monitoring. Discharge criteria for asthma exacerbation typically include:
- Sustained oxygen saturation >92% on room air.
- PEF >70% of personal best.
- Minimal or no wheezing.
- Ability to speak in full sentences.
- No accessory muscle use.
- Adequate oral intake.
- Caregiver understanding of medication regimen and action plan. The child still needs to be observed for at least 1-2 hours after the last bronchodilator treatment to ensure stability. The nurse should advocate for continued observation and reassessment before discharge. The mother should be educated on signs of worsening and when to seek care.