Sedation Definitions

The RCoA and CEM sedation definitions are as follows:

Moderate sedation/analgesia (“conscious sedation”)

This is a drug-induced depression of consciousness during which patients respond purposefully to verbal commands, either alone or accompanied by light tactile stimulation. No interventions are required to maintain a patent airway, and spontaneous ventilation is adequate. Cardiovascular function is usually maintained. In the ED this is most often achieved using a combination of opioids and benzodiazepines.

Deep sedation/analgesia

This is a drug-induced depression of consciousness during which patients cannot be easily aroused but respond purposefully following repeated or painful stimulation. The ability to independently maintain ventilatory function may be impaired. Patients may require assistance in maintaining a patent airway, and spontaneous ventilation may be inadequate. Cardiovascular function is usually maintained.