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Abstract
Introduction
This study examined the depth of sedation and the usefulness of the monitoring tool in determining the level of sedation in patients undergoing third molars extraction under conscious sedation with midazolam.
Materials and Methods
Twenty two patients undergoing third molars extraction at the department of Oral and Maxillofacial surgery, Ewha Womans Mokdong Hospital from February 2010 to April 2010 were analyzed. All patients were classified as American Society of Anesthesiologist (ASA) class I and had no contraindications tosedation. The bispectral index was recorded continually during surgery using a bispectral monitor. The initial sedation was accomplished using a 3 mg bolus of midazolam followed by a 2 mg bolus of midazolam until the level of sedation, at which the patient's eyes were closed or the subject was responsive only to loud or repeated calling of their name, was reached. All subjects were surveyed with a postoperative questionnaire to evaluate the level of sedation.
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 | Fig. 1.The change of blood pressure in the times of the study (mmHg). (SBP: systolic blood pressure, DBP: diastolic blood pressure) |
 | Fig. 5.Amnesia incidence according to stimulation or procedure after administration of midazolam. |
 | Fig. 6.Magnitude of amnesia: number of memory object words recalled/recognized after 3 hours sedation sessions. |
 | Fig. 7.VAS score of anxiolysis and pain perception per patient (VAS: visual analogue scale): the evaluation of the anxiolytic and sedative effects of the employed sedation procedures was made through the VAS score. The amount of anxiolytic effect and pain that a patient feels ranges across a continuum from none to an extreme amount of anxiolysis and pain, with higher score indicating favorable preference on anxiolysis and unfavorable preference on pain. |
 | Fig. 8.Satisfaction degree of patients and surgeon: by assigning the following scores to the corresponding answers. (1: very unsatisfactory, 2: unsatisfactory, 3: intermediate, 4: satisfactory, 5: very satisfactory) Questionnaire responses score 1–5, with higher score indicating favorable preference. |
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