What is recommended for treating mild pneumothorax?

Breathing 100% oxygen is a recommended treatment for mild pneumothorax because it helps to accelerate the reabsorption of the air trapped in the pleural space. High concentrations of oxygen assist in resolving the pneumothorax more quickly, as it increases the gradient for nitrogen to be reabsorbed into the bloodstream from the pleural cavity. This treatment is non-invasive and can effectively alleviate the symptoms without the need for more aggressive interventions.

In contrast, immediate insertion of a chest tube is typically reserved for more severe cases of pneumothorax, such as a tension pneumothorax or a larger pneumothorax that causes significant respiratory distress. Administration of fluids also does not directly address the issue of air in the pleural cavity and is not a standard treatment for pneumothorax. Lastly, observation with no treatment may be appropriate for some cases, but using 100% oxygen is a proactive measure that can expedite recovery in mild cases. Thus, breathing 100% oxygen is an essential therapeutic approach to ensure effective management of mild pneumothorax.