A COPD patient is unresponsive during oxygen therapy and the ECG shows ventricular tachycardia. What should the therapist do next?

In the scenario presented, the correct action involves ensuring the patient receives adequate oxygenation, especially considering that they are unresponsive and are experiencing ventricular tachycardia. Placing the patient on a non-rebreathing mask is a priority as it helps to deliver a high concentration of oxygen, which is critical in a situation where the patient's oxygen levels may be compromised due to respiratory issues commonly associated with COPD.

Ventricular tachycardia can lead to hemodynamic instability and requires immediate attention. However, in cases where the patient is unresponsive, it is essential first to address the airway and oxygen needs. High-flow oxygen via a non-rebreather mask may help improve oxygen delivery to the body's tissues during this critical time.

While treatments like chest compressions or cardioversion are needed in cases of pulseless electrical activity or unstable ventricular tachycardia, the situation described suggests that the immediate need is for effective oxygenation before more invasive interventions are performed. Hence, placing the patient on a non-rebreathing mask is the appropriate next step in this scenario.