A 16-year-old female is found unconscious in her bedroom after her friends reported she had been 'huffing' from an aerosol can. She is unresponsive to verbal or painful stimuli. Her skin is pale and clammy. Respirations are shallow at 8 breaths/min, pulse 110 bpm, and BP 90/50 mmHg. What is the MOST critical immediate intervention?
- AObtain a 12-lead ECG.
- BAdminister activated charcoal orally.
- CInitiate positive pressure ventilation (PPV) with supplemental oxygen.
- DAdminister naloxone intravenously.
Show answer & explanationAnswer & explanation
Correct answer: C. Initiate positive pressure ventilation (PPV) with supplemental oxygen.
Inhalant abuse (huffing) can cause central nervous system depression and respiratory depression, leading to hypoventilation and hypoxia. The patient's shallow respirations at 8 breaths/min indicate severe respiratory depression and impending respiratory arrest, which is a life-threatening emergency. The MOST critical immediate intervention is to support ventilation with positive pressure ventilation and supplemental oxygen to ensure adequate oxygenation and carbon dioxide removal.
Why the other options are wrong
- A. While an ECG might be useful later, addressing the life-threatening respiratory depression is the immediate priority. Cardiac arrhythmias can occur with inhalants, but airway and breathing come first.
- B. Activated charcoal is not effective for inhalant poisoning as these substances are gases or volatile liquids and are absorbed via the lungs, not the GI tract.
- D. Naloxone is indicated for opioid overdose; inhalants are not opioids, so naloxone would not be effective.
Inhalant Abuse Emergency
Inhalant abuse (huffing) can cause rapid central nervous system depression, respiratory depression, and cardiac arrhythmias. The primary emergency management focuses on airway and ventilatory support.
- Can cause severe respiratory depression and cardiac sensitization.
- Rapid onset of effects.
- No specific antidote; management is supportive.
- Activated charcoal is ineffective.
Memory trick: Huffing leads to slow breathing; bag them fast!