Is nitrous oxide recommended for patients with asthma during dental treatment?

• A. Yes, N2O is recommended
• B. No, N2O should be avoided
• C. Only if on inhaled steroids
• D. Only for severe uncontrolled asthma

Answer: (A)

Nitrous oxide with oxygen is often recommended in dental care because it calmS patients and provides pain relief without heavy respiratory effects, and it can be adjusted quickly. For someone with asthma, reducing anxiety and discomfort during procedures helps prevent bronchospasm triggered by stress or pain. The gas is inhaled in a controlled, titratable way and is rapidly eliminated once the flow is stopped, with oxygen always used to keep up ventilation and oxygenation. This makes it a safe, practical option for many asthmatic patients when the asthma is well controlled and there is no active attack. It isn’t tied to whether the patient uses inhaled steroids, and it isn’t appropriate only for severe uncontrolled asthma; the main limitation is an acute or poorly controlled asthma episode, in which case sedation would be deferred.