Use of the SNAP II Electroencephalography (EEG) Monitor in Outpatients Undergoing Surgery/Procedures With Sedation

N/ACompletedNCT00204711

University of Wisconsin, Madison51 enrolled

Overview

The purpose of this study is to determine if the SNAP II electroencephalography (EEG) monitor accurately reflects changes in sedation level in outpatients undergoing surgery or procedures with sedation.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Sedation

Interventions

SNAP II EEG SystemOTHER

A portable EEG monitor (SNAP II EEG System, Everest -St. Louis) is unique in that it monitors both low frequency EEG signals (1-40 Hz), which are typically used, and high frequency EEG signals (80-420 Hz), which are not usually used, and calculates a derived EEG parameter (the SNAP Index). The SNAP Index ranges from 100 (completely awake) to 0 (no brain activity) and has been shown in a few studies to correlate with increasing sedation and loss of consciousness in human volunteers and patients receiving general anesthesia during surgery.

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * American Society of Anesthesiologists (ASA) I, II or III physical status Exclusion Criteria: * Use of inhalation general anesthesia * ASA IV physical status

Locations (1)

University of Wisconsin Hospital and Clinics

Madison, Wisconsin, United States

Outcomes

Primary Outcomes

Assessment of participant heterogeneity between SNAP Index and OASS Score.

The SNAP Index is a derived EEG (electroencephalogram) parameter (from the SNAP II EEG System) ranging from 100 (completely awake) to 0 (no brain activity). The Observer's Assessment of Alertness/Sedation Score (OASS) is a score derived from motor and sensory functions between 0 and 5 where 0 is unresponsive and 5 is awake.

Time frame: up to 1 day post op

Data from ClinicalTrials.gov

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