Comparison of anaesthetic face masks - a crossover trial to compare air entrainment using the standard BOC mask vs the intersurgical single use mask during preoxygenation

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN45706447

Enrollment

Registered

2005-09-30

Start date

2004-09-01

Completion date

Unknown

Last updated

2015-01-13

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

Conditions

Surgery: Anaesthesia Surgery Anaesthesia

Interventions

20 to 30 subjects randomised into 2 groups. Each group will undergo 2 cycles of 3 minutes preoxygenation with each of the test masks, attached to the same anaesthetic circuit.

Eligibility

Inclusion criteria

Inclusion criteria: Between 20-30 subjects recruited from non-anaesthetic colleagues.

Exclusion criteria

Exclusion criteria: Respiratory disease, significant cardiac disease.

Design outcomes

Primary

Measure	Time frame
1. Comparison of area under the curve for expired oxygen concentration against time over 3 minutes. 2. Comparison of inspired oxygen concentrations against time over the 3 minutes.	—

Secondary

Measure	Time frame
Not provided at time of registration	—

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026