As otolaryngologists are performing more procedures on an in-office basis, more are also using conscious sedation in the clinic setting. They are not alone: nearly 70% of all surgical procedures are performed on an outpatient basis with conscious sedation, which avoids the costs of inpatient care. The demand for conscious sedation currently exceeds the availability of anesthesiologists and nurse anesthetists to administer the sedation, and therefore more physicians and nurses are being trained in the administration and monitoring of conscious sedation, at both moderate and deep levels.
Explore this issue:December 2006
Not surprisingly, the trend toward surgeons administering in-office conscious sedation themselves is occurring alongside concerns about safety. An article in the Wall Street Journal (August 9, 2006) pointed to the risks associated with conscious sedation, and particularly with nonanesthesiologist practitioners administering it. New guidelines have been developed by both the University HealthSystems Consortium (UHC) and the American Society of Anesthesiologists (ASA) to address these concerns and ensure the safe use of conscious sedation when the state of moderate sedation is induced. The ASA guidelines (www.asahq.org/publicationsAndServices/credentialing.pdf ) define levels of sedation and monitoring equipment, as well as the formal training, that a practitioner should have in order to safely administer moderate sedation. Both organizations are also developing guidelines for non-anesthesia professionals to administer deep sedation.
The guidelines define moderate sedation as a drug-induced depression of consciousness during which patients respond purposefully to verbal commands, either alone or accompanied by light tactile stimulation, and specify that intubation is not required and that spontaneous ventilation is adequate. Deep sedation is defined as a state in which patients cannot be easily aroused but respond purposefully following repeated or painful stimulation. Patients in deep sedation may also need intubation because spontaneous ventilation may be inadequate.