American Society of Radiologic Technologist (ASRT) Practice Exam

What is an ineffective method for delivering oxygen in clinical settings?

1. Non-rebreathing mask

2. Venturi mask

3. Chest tube

4. Nasal cannula

The correct answer is: Chest tube

In clinical settings, a chest tube is primarily used for draining air, fluid, or pus from the pleural space and is not designed for delivering oxygen. It facilitates the re-expansion of the lung by allowing trapped air or fluid to escape, thereby alleviating pressure on the lungs. Unlike oxygen delivery devices, which are specifically engineered to supply supplemental oxygen to patients with respiratory needs, a chest tube's function is entirely different, focusing on restoring normal lung function rather than supplying oxygen. Conversely, devices such as non-rebreathing masks, Venturi masks, and nasal cannulas are all tailored for providing supplemental oxygen, each with unique mechanisms for delivery and regulation of oxygen concentrations, which makes them effective options in respiratory care. This distinction highlights the fundamental role that each device plays within patient management and underlines why a chest tube does not serve as an effective method for oxygen delivery.