Questions

The exception is a. Recirculating exhaust ventilation system.

Recirculating exhaust ventilation systems are not recommended for nitrous oxide scavenging. These systems filter and recirculate air back into the operatory, which would simply spread the nitrous oxide contamination rather than removing it. Effective scavenging systems must vent the nitrous oxide outside the building. The other options are all important components of a good scavenging system:

• b. Adequate suction systems that vent outside: This is essential for capturing exhaled nitrous oxide and venting it away from the operatory.
• c. Use of scavenging mask/nasal hood: These devices help to capture nitrous oxide at the source (the patient's nose) before it is exhaled into the room.
• d. Regular inspection of equipment for leakage: Regular maintenance and leak checks are crucial for preventing nitrous oxide from escaping into the ambient air.