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Pre-oxygenation: the Hudson mask as an alternative technique
1Magill Department of Anaesthetics, Westminister Hospital, London.
Anaesthesia
|November 1, 1992
Summary
The Hudson mask, with high oxygen flow, provides an effective alternative for pre-oxygenation compared to the Magill system. This simple oxygen facemask technique is suitable for surgical patients.
Area of Science:
- Anesthesiology
- Respiratory Medicine
- Medical Devices
Background:
- Pre-oxygenation is crucial for patient safety during anesthesia.
- Conventional methods like the Magill system are established but may have limitations.
- Evaluating alternative, simple devices for effective pre-oxygenation is important.
Purpose of the Study:
- To compare the efficacy of a simple Hudson oxygen facemask with high inflow against the Magill system for pre-oxygenation.
- To assess pre-oxygenation effectiveness by measuring time to arterial desaturation in surgical patients.
Main Methods:
- A comparative study involving 138 patients undergoing elective surgery (gynecological and orthopedic).
- Patients were divided into groups using either a Hudson mask (high oxygen inflow) or a Magill system.
- Arterial desaturation levels (97%, 95%, 93%) were measured using finger pulse oximetry after 3 minutes of pre-oxygenation.
Main Results:
- The study measured the time taken to reach specific arterial desaturation endpoints for both pre-oxygenation methods.
- Data suggests comparable efficacy between the Hudson mask and Magill system across different patient groups (ASA 1-2 and ASA 3).
Conclusions:
- The simple Hudson oxygen facemask with high oxygen inflow is a viable alternative for pre-oxygenation.
- This technique demonstrates effectiveness and can be considered for routine use in surgical settings.