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A comparison study of the end-tidal oxygen (EtO2) during preoxygenation with oxygen-prefilled anesthesia breathing system versus non-prefilled anesthesia breathing system

A comparison study of the end-tidal oxygen (EtO2) during preoxygenation with oxygen-prefilled anesthesia breathing system versus non-prefilled anesthesia breathing system

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
TCTR
Registry ID
TCTR20160814002
Enrollment
Unknown
Registered
2016-08-14
Start date
2016-02-24
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

elective surgery under general anesthesia

Interventions

the anesthesia breathing system was prefilled with oxygen using the oxygen flush valve to 30 cmH2O for 10 seconds ,no prefilled oxygen in anesthesia breathing system
Experimental Procedure/Surgery,Placebo Comparator Procedure/Surgery
oxygen&#45
prefilled anesthesia breathing system,non&#45
prefilled anesthesia breathing system

Sponsors

none
Lead Sponsor
none,none
Collaborator

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: ASA I-II

Exclusion criteria

Exclusion criteria: 1. impaired pulmonary function - CVS or RS disease - heavy smoking - pregnancy - intraabdominal mass >/= 20 week size - obesity - intraabdominal/ intrathoracic infection 2. difficult face mask - broken tooth - beard - on NG tube - face anomaly

Design outcomes

Primary

MeasureTime frame
The end-tidal oxygen concentration (EtO2) 1 minute percent of end-tidal oxygen concentration (EtO2)—

Secondary

MeasureTime frame
The patients who reach EtO2 ≥ 85% 2 minute number of patients—

Countries

Thailand

Contacts

Public Contactkhempet sessumpun

Department of anesthesiology, Khonkaen hospital

khempets@gmail.com0866883663

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026