1-1-12 Wash-in for Desflurane Low Flow Anesthesia

February 8, 2014 updated by: Thepakorn Sathitkarnmanee, Khon Kaen University

We propose a new wash-in technique for desflurane low flow anesthesia with fresh gas flow of O2:N2O 1:1 L/min with desfluraene 12%.

The objective of this study is to identify time to achieve alveolar concentration of desflurane at1, 2, 3, 4, 5 and 6%.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The benefits of low flow anesthesia are economic, less pollution, more heat and humidity preservation but it requires appropriate wash-in phase. The current wash-in protocols are complicated and time consuming. We propose a new 1-1-12 desflurane wash-in protocol which is more simple and predictable.

The objective of this study is to identify time to achieve alveolar concentration of desflurane at 1, 2, 3, 4, 5 and 6% with 1-1-12 wash-in protocol.

All patients will receive iv propofol 2 mg/kg as induction agent and succinyl choline 1.5 mg/kg for intubation. Then the ventilation will be controlled to achieve end-tidal CO2 30-35 mmHg with O2:N2O 1:1 L/min with desflurane 12%. Time to achieve alveolar concentration of desflurane at 1, 2, 3, 4, 5 and 6% will be recorded and analyzed. After that, the concentration of desflurane and anesthetic technique will be adjusted to requirement of anesthesiologist.

Study Type

Observational

Enrollment (Actual)

106

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Thailand
      • Khon Kaen, Thailand, 40002
        • Srinagarind Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 64 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

patients undergoing general anesthesia with endotracheal intubation and controlled ventilation

Description

Inclusion Criteria:

  • ASA classification I-II
  • age 18-64 years

Exclusion Criteria:

  • BMI > 35
  • contraindicated for N2O
  • with pulmonary or cardiac disease

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
1-1-12 wash-in
wash-in using O2:N2O 1:1 L/min with desflurane 12%
Procedure: 1-1-12 wash-in
wash-in phase during start of low flow anesthesia

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Time (in second) to achieve alveolar concentration of desflurane 1, 2, 3, 4, 5 and 6%
Time Frame: participants will be followed until alveolar concentration of desflurane reaches 6%, as expected of 15 minutes
participants will be followed until alveolar concentration of desflurane reaches 6%, as expected of 15 minutes

Secondary Outcome Measures

Outcome Measure
Time Frame
Heart rate
Time Frame: participants will be followed until alveolar concentration of desflurane reaches 6%, as expected of 15 minutes
participants will be followed until alveolar concentration of desflurane reaches 6%, as expected of 15 minutes

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Khon Kaen University

Investigators

  • Principal Investigator: Thepakorn Sathitkarnmanee, MD, Faculty Of Medicine, Khon Kaen University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

January 1, 2014

Primary Completion (Actual)

January 1, 2014

Study Completion (Actual)

January 1, 2014

Study Registration Dates

First Submitted

December 5, 2013

First Submitted That Met QC Criteria

December 11, 2013

First Posted (Estimate)

December 17, 2013

Study Record Updates

Last Update Posted (Estimate)

February 11, 2014

Last Update Submitted That Met QC Criteria

February 8, 2014

Last Verified

February 1, 2014

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • HE561247

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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