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This course is designed to prepare the dental hygienists to safely and effectively administer nitrous oxide/oxygen sedation as a pain control strategy in dental hygiene practice. At the end of this course, participants should be able to: List the properties of nitrous oxide and identify the effects of nitrous oxide on pain, anxiety, and the body systems. Explain indications and relative contraindications for the use of nitrous oxide/oxygen sedation. Recognize signs and symptoms of ideal sedation and over sedation and appropriate recovery from nitrous oxide/oxygen sedation. Recognize facts associate with chronic exposure to nitrous oxide. Describe methods for detection and assessment of trace levels of nitrous oxide in the dental setting and methods of minimizing those levels. Identify equipment associate with nitrous oxide/oxygen sedation. Demonstrate the proper technique for nitrous oxide/oxygen sedation.