Evaluation of Two Positions for Free Floating Tracheal Intubation in Weightlessness

Groupe Hospitalier de Bretagne Sud9 enrolled

Overview

In a non-randomized, controlled, cross-over simulation study, the investigators evaluated and compared intubation performance of trained operators, using either a conventional laryngoscope in an ice-pick position or a video laryngoscope in a free-floating classic position, in weightlessness and in normogravity. Data were analyzed with the generalized linear mixed-effects models. Primary endpoint was the success rate of tracheal intubation. Time to intubation and the confidence score into the success of tube placement were also recorded as secondary endpoints.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

OTHER

Masking

NONE

Enrollment

Conditions

Intubation; Difficult or Failed Intubation Complication

Interventions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: Healthy volunteers * aged between 18 and 65 years old. * Absence of pregnancy * Belonging to a Health Insurance Coverage by the French Social Security Program or equivalent, proved by a European Health Insurance Card (EHIC). * Medically fit to fly after a JAR FCL3 - Class 2 examination Exclusion Criteria before the flight * positive pregnancy test on flight day * anxiety * non-participation in flight safety briefing Exclusion Criteria during the flight * failure to follow safety guidelines * occurence of motion sickness during the procedure

Outcomes

Primary Outcomes

First pass success

Bi-pulmonary ventilation success was assessed by the intubating operator performing chest auscultation and by the measurement of a tidal volume on the mannequin's electronic sensors. Selective side intubation was considered as failure

Time frame: 1 day (1 flight)

Secondary Outcomes

Time

The duration (seconds) of each attempt was recorded and ended with vocal confirmation of tube placement from the intubating operator or at the end of the parabola

Time frame: 1 day (1 flight)

Confidence Score

A subjective score of confidence in the correct tube placement was recorded after each attempt and ranked from minus ten (complete certainty about failure) to plus ten (complete certainty about success). A score of zero was pronounced by the operator when he/she had maximum uncertainty about success or failure.

Time frame: 1 day (1 flight)

Evaluation of Two Positions for Free Floating Tracheal Intubation in Weightlessness

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes