“…Although tension pneumothorax is not uncommon among hospitalized patients, fatal cases of this condition are relatively rare. Tension pneumothorax can evolve during the course of a spontaneous pneumothorax or hyperbaric oxygen therapy (Light and Lee, 2016). It is caused by the entry of air into the pleural cavity, which becomes trapped and leads to increased pressure, the potential collapse of the lung, and compression of surrounding structures.…”