[Outpatient Management of Primary Spontaneous Pneumothorax].

Outpatient Management of Primary Spontaneous Pneumothorax Pneumothorax (PT) is defined as a collapse of the lung due to the collection of air in the pleural space. In primary spontaneous pneumothorax (PSP) there is no underlying pulmonary pathology. Treatment, either conservative or invasive, depends on the size of the PT, the patient's clinical situation and the patient's setting/environment.