Temperature and Humidity Among Different Anesthesia Work-station (humidity)

September 1, 2010 updated by: Korea University Anam Hospital

Comparison of Heat and Humidity Conservation Among Different Anesthesia Workstation and Different Flow Rate.

The effects of preserving humidity and temperature by low flow anesthesia are different in each other anesthesia workstation.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

The fresh gas flow(FGF) is dry and cold in old fashioned anesthesia machine, especially at high folw (above 1 L/min). To the contrary, it has been assumed that the heat and humidity of FGF may be preserved using low FGF (below 1 L/min) during anesthesia or new anesthesia work station. However, it has not been proved yet. We hypothesized that the heat and moisture of FGF may be different in various FGF rate during anesthesia. In addition, it may be different in accordance to anesthesia work station. Therefore, we planed prospective observational study that will demonstrate that the difference of heat and moisture of FGF in different anesthesia work station (Excel; 1st generation anesthesia machine of Datex-Ohmeda Corp., Avance; 2nd generation anesthesia work station of Datex-Ohmeda Corp., Cato; 2nd generation generation anesthesia work station of Drager, Primus; 3rd generation generation anesthesia work station of Drager) and different FGF (0.5, 1, 4 L/min)

Study Type

Interventional

Enrollment (Anticipated)

60

Phase

  • Phase 4

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

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 70 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • patients who planned more than 2 hour operation under general anesthesia
  • ASA class 1,2
  • blood loss less than 500ml

Exclusion Criteria:

  • acute/chronic cardiac or respiratory 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

  • Primary Purpose: HEALTH_SERVICES_RESEARCH
  • Allocation: RANDOMIZED
  • Interventional Model: SINGLE_GROUP
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: humidity
Device: Datex Ohmeda excel anesthesia machine
maintain one of following fresh gas flow, 1 or 4 L/min (nitrous oxide:oxygen =1:1) during 2 hour with using Datex Ohmeda excel anesthesia machine after draping complete
Other Names:
  • Excel
Device: Datex Ohmeda Avance anesthesia work-station
maintain one of following fresh gas flow, 0.5 or 1 or 4 L/min (nitrous oxide:oxygen =1:1) during 2 hour with using Datex Ohmeda Avance anesthesia machine after draping complete
Other Names:
  • Avance
Device: Drager Cato anesthesia work-station
maintain one of following fresh gas flow, 0.5 or 1 or 4 L/min (nitrous oxide:oxygen =1:1) during 2 hour with using Drager Cato anesthesia work-station after draping complete
Other Names:
  • Cato
Device: Drager Primus anesthesia work-station
maintain one of following fresh gas flow, 0.5 or 1 or 4 L/min (nitrous oxide:oxygen =1:1) during 2 hour with using Drager Primus anesthesia work-station after draping complete
Other Names:
  • Primus

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
absolute humidity at both limb of breathing circuit just distal portion of Y-piece
Time Frame: time point 1-11
time point 1; base line value (fresh gas flow(FGF); 8L/min) time point 2; 5 mintues(min) after FGF change to predetermined level time point 3; 10 min after FGF change to predetermined level time point 4; 15 min after FGF change to predetermined level time point 5; 30 min after FGF change to predetermined level time point 6; 45 min after FGF change to predetermined level time point 7; 60 min time point 8; 75 min time point 9; 90 min time point 10; 105 min time point 11; 120 min
time point 1-11

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
patient body temperature(BT)
Time Frame: time point 1 -11
measure BT using esophageal temperature probe each time points are same as primary outcome
time point 1 -11
temperature at both limb of breathing circuit just distal portion of Y-piece
Time Frame: time point 1- 11
the time points are same as primary outcome
time point 1- 11

Collaborators and Investigators

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

Sponsor

Korea University Anam Hospital

Investigators

  • Principal Investigator: Seung Zhoo Yoon, Assist. P., Korea University Anam Hospital

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, 2010

Primary Completion (ANTICIPATED)

September 1, 2010

Study Completion (ANTICIPATED)

October 1, 2010

Study Registration Dates

First Submitted

August 30, 2010

First Submitted That Met QC Criteria

September 1, 2010

First Posted (ESTIMATE)

September 2, 2010

Study Record Updates

Last Update Posted (ESTIMATE)

September 2, 2010

Last Update Submitted That Met QC Criteria

September 1, 2010

Last Verified

July 1, 2010

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • humidity

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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