A Study to Assess Indices of SNAP vs VISTA on Surgical Patients Undergoing General Anesthesia

Anesthesia, General Clinical Trial

— Precision GA  

Official title:

A Prospective Randomized Double Blinded Study Assessing Indices of SNAP vs VISTA on Surgical Patients Undergoing General Anesthesia

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00829803
• Other study ID #: SIS-SNAP-2008-01US
• Status: Completed
• Phase: N/A
• Start date: February 2009
• Est. completion date: January 2011

Study information

• Verified date: June 2011
• Source: Stryker Instruments
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Establish the range of index values for the SNAP II corresponding to each anesthetic state studied.

Description:

Index values for the SNAP II monitor will be identified with each corresponding anesthetic state studied.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 40
• Est. completion date: January 2011
• Est. primary completion date: January 2011
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 65 Years

Eligibility

Inclusion Criteria:

• Patients scheduled for surgery requiring general anesthesia

• Open or laparoscopic procedures

• Cases anticipated to be less than 4 hours in duration

• In-patient and out-patient subjects

• Patients and cases manageable with LMA. Cases manageable with ET tube are also allowed with the condition that only a minimal dose of short-acting NMBA is used at intubation and not throughout the case.

• Local analgesia at incision site is permitted.

• Males and Females between 18 and 65 years of age, inclusive.

• BMI<40 and body mass>41 kg

• Patients who have signed the informed consent.

• Able to receive Informed Consent through subjects native language providing that a native language speaker delivers the Informed Consent.

• ASA Stratification I - III

Exclusion Criteria:

• Any subject failing to fulfill all inclusion criteria

• ASA stratification >= IV

• Subject is a prisoner.

• Patients presenting with evidence of recent trauma, active infection, neurological disorder, seizure disorder, dementia or have been diagnosed with Alzheimer's disease

• Subjects with cardiac or gastric pace makers

• Pregnant women as identified by institutional SOP for female of child-bearing age

• Patients that will not sign an informed consent form

• Patients with previous adverse incidents with anesthesia, including awareness

• Patients undergoing surgery on the head or neck

• Subjects currently taking psychoactive medications as part of routine medical care within the past 7 days

• Subjects that require and/or receive any of the psychotherapeutic agents or psychotropic drugs below, in the treatment of mental illness, and have taken such treatment within the past 7 days.

• Benzodiazepines

• MAOI inhibitors

• Selective serotonin reuptake inhibitors (SSRIs)

• Tricyclic antidepressants

• Lithium

• Neuroleptic agents

• Central nervous system stimulants.

• Subjects with a known history of alcohol or narcotic abuse within 6 months prior to screening OR subjects reporting narcotic or narcotic medication use with 24 hours prior to surgery.

• Subjects requiring neurophysiologic monitoring

• Subjects requiring TIVA

• Subjects requiring prolonged use of NMBA beyond dose required for intubation

• Subjects requiring ketamine

• Subjects receiving spinal, epidural, or other nerve blocks

• Subjects having any condition or severe illness that to the Principal Investigator's discretion would interfere with study assessments OR other severe acute or chronic medical or psychiatric condition that may interfere with the interpretation of study results and, in the judgment of the investigator, and would make the subject inappropriate for entry into this study.

Related Conditions & MeSH terms

• Anesthesia, General

Intervention

Device:
• SNAP monitor; Bispectral Index Monitor (BIS Monitor)
Intended to monitor the state of the brain by data acquisition of EEG signals.

Locations

Country	Name	City	State
United States	Northwestern University Feinberg School of Medicine	Chicago	Illinois
United States	The Ohio State University Medical Center	Columbus	Ohio
United States	University Of Miami	Miami	Florida
United States	Beaumont Hospital	Royal Oak	Michigan

Sponsors (1)

Lead Sponsor	Collaborator
Stryker Instruments

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	SNAP Index values corresponding to anesthetic states: Pre-induction (baseline), loss of response, anesthesia maintenance, first purposeful response after anesthesia is discontinued, at extubation or LMA removal		3 months