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

Korea University

Status and phase: Unknown; Phase 4

Conditions: Humidity; Temperature

Treatments: Device: Drager Cato anesthesia work-station; Device: Drager Primus anesthesia work-station; Device: Datex Ohmeda Avance anesthesia work-station; Device: Datex Ohmeda excel anesthesia machine

Study type: Interventional

Funder types: Other

Identifiers

NCT01193465

humidity

Details and patient eligibility

About

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

Full 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)

Enrollment: 60 estimated patients

Sex: All

Ages: 18 to 70 years old

Volunteers: No Healthy Volunteers

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

Trial design

Primary purpose: Health Services Research

Allocation: Randomized

Interventional model: Single Group Assignment

Masking: None (Open label)

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60 participants in 1 patient group

humidity

Experimental group

Treatment:

Device: Datex Ohmeda excel anesthesia machine

Device: Datex Ohmeda Avance anesthesia work-station

Device: Drager Primus anesthesia work-station

Device: Drager Cato anesthesia work-station