What is the appropriate treatment for a patient who has inhaled chlorine dioxide?

Treatment for Chlorine Dioxide Inhalation

Immediately administer 100% high-flow oxygen via non-rebreather mask or endotracheal tube as the primary treatment for chlorine dioxide inhalation, continuing until respiratory symptoms resolve.

Immediate Management

Oxygen Therapy

• Administer 100% normobaric oxygen immediately via high-flow mask or endotracheal tube for any patient with suspected chlorine dioxide inhalation 1
• Continue oxygen therapy for approximately 6 hours or until presenting respiratory symptoms completely resolve 1
• If the patient requires mechanical ventilation due to severe respiratory distress, intubate and provide 100% FiO2 1

Supportive Care Priorities

• Remove the patient from the exposure source immediately to prevent continued inhalation 1
• Monitor for acute respiratory distress syndrome (ARDS), as chlorine dioxide can cause severe acute respiratory injury 2
• Assess respiratory status continuously, including oxygen saturation, respiratory rate, and work of breathing 2

Clinical Monitoring

Respiratory Assessment

• Chlorine dioxide exposure can cause acute respiratory distress even at concentrations below hazardous labeling thresholds 2
• Monitor for progressive respiratory failure requiring escalation of respiratory support 2
• Watch for delayed onset of symptoms, as respiratory complications may worsen over the first 24-48 hours 2

Systemic Complications

• Assess renal function with serum creatinine and urine output, as chlorine dioxide can cause acute kidney injury 3
• Monitor for disseminated intravascular coagulation (DIC) with coagulation studies if systemic toxicity is suspected 3
• These systemic complications are more commonly reported with ingestion but should be considered in severe inhalation cases 3

Common Pitfalls

• Do not delay oxygen therapy while waiting for confirmatory testing or detailed exposure history 1
• Do not assume safety based on product labeling—chlorine dioxide products labeled as "non-hazardous" can still exceed threshold limit values during normal use and cause significant respiratory injury 2
• Avoid premature discontinuation of oxygen therapy; ensure complete symptom resolution before weaning 1

Duration of Treatment

• Continue 100% oxygen for approximately 6 hours minimum if symptoms are present 1
• If the patient feels well and has been compliant with oxygen therapy for this duration, repeating measurements is not necessary 1
• Patients with persistent symptoms require continued oxygen and possible admission for observation 2