What is the primary treatment for an open pneumothorax?

The primary treatment for an open pneumothorax involves using a gloved hand followed by a chest seal to create a one-way valve, allowing air to escape from the pleural space, but preventing it from re-entering. An open pneumothorax, also known as a "sucking chest wound," occurs when there is a breach in the chest wall, leading to a direct communication between the pleural cavity and the environment. This can result in respiratory distress and reduced lung function due to the influx of air, which may collapse the lung.

By initially covering the wound with a gloved hand, the paramedic is able to temporarily control the airflow and prevent further air from entering the pleural space while also preparing to apply a chest seal. The chest seal functions as a one-way valve, sealing the wound and allowing air that has entered the pleural space during inhalation to escape during exhalation. This helps to stabilize the patient and improve their respiratory function until further medical treatment can be provided.

Administering oxygen, applying a chest tube, or performing CPR, while important in different emergency situations, do not address the immediate life-threatening issue of the open pneumothorax itself. Administering oxygen would assist with oxygenation