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Temperature and humidity of the gases in a workstation anesthesia machine

The temperature and humidity of the inhaled gas in an anesthesia workstation using a low fresh gas flow with or without thermal insulation or heat and moisture exchanger

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-26ssvc
Enrollment
Unknown
Registered
2015-06-11
Start date
2012-01-30
Completion date
Unknown
Last updated
2025-10-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Respiratory tract diseases, general anesthesia, disease prevention.

Interventions

Control group: 11 women scheduled for elective open abdominal gynecologic surgery under intravenous general anesthesia will have, during the anesthesia, a mechanical ventilation with a circle breathin
Procedure/surgery
E07.700.700

Sponsors

Universidade Estadual Paulista
Lead Sponsor
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Collaborator

Eligibility

Sex/Gender
Female
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: Female gender volunteers; American Society of Anesthesiologists physical status 1 or 2 (healthy or with a controlled disease); body mass index (relation between the weight and the height) between 20 and 30 kg/cm²; scheduled for elective open abdominal gynecologic surgery.

Exclusion criteria

Exclusion criteria: Volunteers with fever; decompensated endocrinologic disease; using drugs that interfere with arterial blood pressure or heart function.

Design outcomes

Primary

MeasureTime frame
A rise in the absolute humidity next to the tracheal tube, verified by a thermo-hygrometer measure, regarding a difference of 5 mg H2O/L between the control group and the intervention groups.;There was no significant rise in absolute humidity between the control group and the thermal insulation group (0.4 mg H2O); but the heat and moisture exchanger group and the heat and moisture exchanger plus thermal insulation group, respectively, achieved significant rises of 2.3 and 4.9 mg H2O/L in comparison to the control group.—

Secondary

MeasureTime frame
A rise in the temperature next to the tracheal tube, verified by a thermo-hygrometer measure, regarding a difference of 3°C between the control group and the intervention groups. ;There was no significant rise in temperature between the control group and the thermal insulation group (- 0.2 °C); but the heat and moisture exchanger group and the heat and moisture exchanger plus thermal insulation group, respectively, achieved significant rises of 1.1 e 2.6 °C in comparison to the control group.—

Countries

Brazil

Contacts

Public ContactSERGIUS DE OLIVEIRA

Faculdade de Medicina de Botucatu - UNESP

sergiusarias@hotmail.com+55(21)988747776

Outcome results

None listed

Source: REBEC (via WHO ICTRP)