This device has not come up in the written exam, but frequently examiners (or just evil-minded intensivsts) like to offer the trainees a Laerdal bag, and ask them to reasemble it from scratch, or discuss the volume it contains, or something similar.
Features of this device
- Bag constructed from inert plastic which re-expands after compression
- Adult bag = 1600 mL volume
- Oxygen is connected to the bag reservoir
- Air intake valve prevents oxygen from refluxing back into the reservoir
- An oxygen flow rate of at least the minute volume of the patient allows 100% oxygen to be delivered.
- Second one-way valve prevents exhaled gas from re-entering the bag
- It comes with a standard 15 mm adapter for attaching to airway devices
- Able to attach PEEP valve to exhalation port (built in or detachable)
Complications of manual ventilation:
- Increased work of breathing while breathing spontaneously against the duckbill inspiratory valve
- gastric distension
- risk of barotrauma
- if high free gas flows are not used high FiO2 will not be achieved