Non-invasive biphasic cuirass ventilation (BCV) has recently been described for ENT surgery (ref 1-2). The clinical experience is however still sparse and further study is required.

The purpose of the study is to descibe 1) mounting time and fitting of the cuirass shell on voluntary participants and 2) time to visible ventilation

The purpose of this study is to evaluate the the fitting of the Cuirass shell on healthy volunteers. Even though there is growing knowledge of Cuirass ventilation in anaesthesia, (ref. 1-2) there is sparse experiences with the time required for fitting the Cuirass shell and the time to start of ventilation. This knowledge is paramount before even discussing the potential use of Cuirass ventilation in acute settings in the future.

In addition to the invitation to the Copenhagen Airway Management course in Copenhagen Denmark on 30th of November 2023, all participants have been invited an has accepted to participate in the study.

In total 60 to 65 participants will all have the Cuirass shell fitted and will be awake ventilated with Biphasic Cuirass Ventilation. All participants have given consent to being video filmed.

The study will register the time it takes to fit the Cuirass shell and the time before visible ventilation is obtained.

All participants will be in their habitual state i.e..no sedation is required since the product was originally designed for home use in awake patients.

Inclusion Criteria:

• participants of the airway course

Exclusion Criteria:

• Recent surgery in thoracic or abdominal compartments
• participants with pace-maker

The study population is healthy volunteers, mostly doctors, who participate in a large airway management course i Copenhagen.