Final answer:
The diagnostic test being performed in the figure is capnography. Capnography measures the level of carbon dioxide (CO2) in a person's exhaled breath and is used to monitor respiratory status. It can help diagnose respiratory diseases and monitor treatment effectiveness.
Step-by-step explanation:
The diagnostic test being performed in the figure is capnography. Capnography is a test that measures the level of carbon dioxide (CO2) in a person's exhaled breath. It is commonly used to monitor a patient's respiratory status during anesthesia or in the intensive care unit.
Capnography can provide important information about a person's ventilation and metabolism. It can help diagnose respiratory diseases such as chronic obstructive pulmonary disease (COPD) or asthma, and it can also be used to monitor the effectiveness of disease treatment.
Pulse oximetry and pulmonary function tests are other diagnostic tests used to assess respiratory function, but they are not being performed in the figure.