Low Flow Anaesthesia, is There a Difference Between 2 Modern Anaesthetic Machines Using Different Gas Reservoir (LF)

Jan Jakobsson

Status: Terminated

Conditions: General Anaesthesia

Treatments: Device: Flow-I, a modern anaesthetic machine without a bag/below/gas reservoir for compression of insufflation gas; Device: Asys, a anaesthetic machine with a bag/bellow for compression of gas to be insufflated

Study type: Interventional

Funder types: Other

Identifiers

NCT02013869

201301

JJ201301 (Other Grant/Funding Number)

Details and patient eligibility

About

To study the Flow-I breathing circle during low flow general anaesthesia, whether this non-below system has advantages reduced time to reach Et 1MAC (minimal alveolar concentration) and lower consumption of inhaled agent

Full description

Assessing whether there are clinical differences in anaesthetic performance between standard anaesthesia workstation including a below and the new Flow-I device without a below

Enrollment: 40 patients

Sex: All

Ages: 18 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

ASA 1-2 patient 18 - 65 years scheduled for elective surgery

Exclusion criteria

ASA > 2 heart failure COPD

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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40 participants in 2 patient groups

Flow-I

Experimental group

Description:

Wash in of desflurane (SupraneR) in an anaesthesia machine without below, a new technique that do not have abag/reservoir that is compressed but pushes the gas into the patient. This technique uses far less of fresh gas volume. Thus lower anaesthetic gas will be consumed per hour. The primary outcome is the amount of anaesthetic consumed, the decrease in liquid desflurane (SupraneR) in the vaporiser of the ananesthetic machine. The vaporizer will be weighed before and after the anaesthetic to define the amount used.

Treatment:

Device: Flow-I, a modern anaesthetic machine without a bag/below/gas reservoir for compression of insufflation gas

Asys

Active Comparator group

Description:

Wash in of desflurane (Suprane) in conventional anaesthesia machine Asys, with the anaesthesia machine Asys that has a bag/reservoir that is compressed for insufflation of gas into the patient, thus it is expected that more gas will be consumed per hour. The primary outcome is the amount of anaesthetic consumed, the decrease in liquid desflurane (SupraneR) in the vaporiser of the ananesthetic machine. The vaporizer will be weighed before and after the anaesthetic to define the amount used.

Treatment:

Device: Asys, a anaesthetic machine with a bag/bellow for compression of gas to be insufflated