DANB General Chairside Practice Test

Which condition is not a potential contraindication for the use of nitrous oxide?

1. Obstructive sleep apnea

2. Pregnancy

3. Age

4. Severe anxiety disorders

The correct answer is: Age

The use of nitrous oxide in dental practice is generally considered safe, and age alone is not usually seen as a contraindication. There is no specific age at which a patient cannot receive nitrous oxide. In fact, nitrous oxide can be beneficial for both pediatric and geriatric patients, helping to manage anxiety and discomfort during dental procedures. In contrast, obstructive sleep apnea and pregnancy can present specific concerns. For example, patients with obstructive sleep apnea may require special considerations regarding airway management when using nitrous oxide. Similarly, while nitrous oxide can be used carefully under certain circumstances in pregnant patients, it is typically avoided during the first trimester due to potential risks to fetal development. Severe anxiety disorders may complicate the administration of nitrous oxide, as patients with high anxiety levels might have difficulty tolerating the delivery of the gas or may not respond appropriately to its calming effects. Thus, age does not inherently pose a risk regarding the use of nitrous oxide, allowing for its wider application across different patient demographics.