During a cannot ventilate cannot intubate situation surgical airway is the last rescue option. Especially in the prehospital setting the airway management seems to be more difficult than in a hospital setting. Nearly all emergency physicians have a limited experience with cricothyrotomy and it is a unclear what method should be taught for this lifesaving procedure, due to lack of data in humans. The aim of this study is to compare the performance of medical personnel (medical students, paramedics, trainee anaesthetists and consultants) in establishing an emergency surgical airway on a plastic laryngeal model and in a porcine laryngeal model using the Scalpel Bougie technique, the Seldinger technique and the common surgical technique. Furthermore the investigators want to elucidate whether the training of the 3 techniques has an influence in the decision making of the preferred technique in a subsequently simulated cannot ventilate cannot intubate scenario.
The investigators plan to recruit medical students (University Mainz), paramedics (employed in ambulance and rescue helicopter), trainee anaesthetists and consultants of the department of anesthesiology from the university hospital Mainz. After written informed consent the participants have to complete an pre-study questionnaire, than the participants get an information sheet about the 3 techniques and the investigators show the participants a short video demonstrating the different techniques. All participants have the opportunity to practice one insertion with each method on a plastic laryngeal model. After that the participants have to perform each technique on the plastic model and the investigators measure the time from initially handling equipment to the final end-point, which the investigators take as a successful placement of the endotracheal tube verified by a fiberoptic position check.
Study Type
OBSERVATIONAL
Enrollment
200
ScalpelBougie Set
Melker Set
Scalpel and speculum
ScalpelCric Set
Scalpel and speculum
Johannes Gutenberg University Medicine Centre Mainz
Mainz, Rhineland Palatine, Germany
Time from initially handling equipment to a successful placement of the endotracheal tube verified by a fiberoptic position check
Time frame: up to 3 minutes
Success rate in the first trial
Time frame: up to 3 minutes
Number of trials
Time frame: up to 3 minutes
Dimension of the tracheal trauma
horizontally and vertically in mm
Time frame: up to 10 minutes
Comfort evaluation by the performer
Likert-Scale: 1=very easy, 2=easy, 3=difficult, 4=very difficult
Time frame: up to 15 minutes
Influence of training on the time to decision making for cricothyrotomy
After performing the different techniques of cricothyrotomy on a platistic and a porcine laryngeal model, the participants will complete a simulator training for a cannot intubate and cannot ventilate scenario. Time to decide (measured in seconds) to perform cricothyrotomy will be measured from the beginning of the scenario.
Time frame: up to 5 hours
Influence of training on choosing the technique
After performing the different techniques of cricothyrotomy on a platistic and a porcine laryngeal model, the participants will complete a simulator training for a cannot intubate and cannot ventilate scenario. The technique (Scalpel bougie, seldinger, surgical) of cricotyrotomy, chosen by the participant will be reported and compared with the preferred technique, the participant had chosen before performing the training.
Time frame: up to 5 hours
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