We, therefore conducted a randomized cross over study to evaluate the usefulness of this new device use by experienced anesthesiologists in several airway manikin scenarios. We hypothesized that in the hands of experienced anesthesiologists the new Flexible Tip Bougie catheter would perform comparably to the standard bougie catheter) in the normal airway scenario. In the difficult airway (both tongue edema, manual in-line stabilization, or cervical collar stabilization), we hypothesized that the new Flexible Tip Bougie catheter would prove superior to the standard Bougie stylet.

Inclusion Criteria:

• physicians
• give voluntary consent to participate in the study
• none experience in videolaryngoscopy
• less than 1 year experience in medicine

Exclusion Criteria:

• not meet the above criteria
• wrist or low back diseases

data will be available from the main investigator