In the management of refractory, severely agitated patients during respiratory emergencies, which agent is described as useful?

• A. Ketamine
• B. Haloperidol
• C. Midazolam
• D. Propofol

Answer: (A)

In severe agitation during respiratory distress, the priority is to calm the patient quickly without compromising breathing or airway protection. Ketamine fits this need because it provides rapid sedation while preserving spontaneous respiration and airway reflexes, and it also has bronchodilating properties that can help with bronchospasm. This means you can reduce agitation and agitation-related work of breathing without forcing intubation or causing dangerous respiratory depression. Ketamine’s onset is fast, often within minutes, and its dissociative state can make it easier to perform necessary assessments and interventions.

Other agents tend to depress respiration more or lack bronchodilatory effects. Benzodiazepines like midazolam can significantly depress ventilation and diminish airway protection, which is risky in an already compromised patient. Propofol similarly suppresses breathing and can drop blood pressure, complicating management. Haloperidol can calm agitation but doesn’t address bronchospasm and carries risks like extrapyramidal effects and QT prolongation, making it less ideal in an acute respiratory emergency.