Final answer:
A bag valve mask can be used to ventilate an adult patient in respiratory arrest with a pulse. The device collects the expired air for analysis of oxygen and carbon dioxide.
Step-by-step explanation:
When an adult patient is in respiratory arrest with a pulse, they can be ventilated using a bag valve mask. This is a device that consists of a bag attached to a mask. The bag is squeezed to manually deliver breaths to the patient. The patient breathes in room air through the mask, and when they exhale, the expired air is collected in the bag. This allows for the analysis of oxygen and carbon dioxide content to calculate the rates of oxygen utilization and CO2 production.