Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Measurement of Forces Applied Using a Macintosh Direct Laryngoscope Compared to GlideScope Video Laryngoscope in Patients With at Least One Difficult Intubation Risk Factor
Brief Summary: During Anesthesia many patients require that a breathing be inserted into their windpipe. This is usually achieved using a direct laryngoscope, consisting of a retraction blade with a light near its end. When achieving a direct line-of-sight to the windpipe is difficult, more force is often applied, resulting in greater patient stress. A GlideScope video laryngoscope uses a camera and light source to see the windpipe. This enables the user to see objects that may not be in the direct line-of-sight. This likely results in less force being required, reducing patient stress. Because such stresses are often confounded by patient variables, we are comparing the forces required by the direct and video laryngoscopes on patients with at least one risk factor for difficulty, by directly measuring these with special sensors attached to the laryngoscope blades.


Options:
A: Arm Label: Truview EVO2®; Type: ACTIVE_COMPARATOR; Interventions: Other: Macintosh type, Truview EVO2® type and Airtraq® type laryngoscopes | Arm Label: Airtraq®; Type: ACTIVE_COMPARATOR; Interventions: Other: Macintosh type, Truview EVO2® type and Airtraq® type laryngoscopes | Arm Label: Direct laryngoscopy; Type: ACTIVE_COMPARATOR; Interventions: Other: Macintosh type, Truview EVO2® type and Airtraq® type laryngoscopes | Intervention Type: OTHER; Name: Macintosh type, Truview EVO2® type and Airtraq® type laryngoscopes; Assigned to Arm(s): Airtraq®, Direct laryngoscopy, Truview EVO2®
B: Arm Label: Glidescope; Type: ACTIVE_COMPARATOR; Interventions: Device: Endotracheal intubation | Arm Label: Macintosh laryngoscope; Type: ACTIVE_COMPARATOR; Interventions: Device: Endotracheal intubation | Arm Label: Bonfill's rigid scope; Type: ACTIVE_COMPARATOR; Interventions: Device: Endotracheal intubation | Arm Label: Air traq; Type: ACTIVE_COMPARATOR; Interventions: Device: Endotracheal intubation | Arm Label: C -Mac scope; Type: ACTIVE_COMPARATOR; Interventions: Device: Endotracheal intubation | Arm Label: flexible fiberoptic scope; Type: ACTIVE_COMPARATOR; Interventions: Device: Endotracheal intubation | Intervention Type: DEVICE; Name: Endotracheal intubation; Assigned to Arm(s): Air traq, Bonfill's rigid scope, C -Mac scope, Glidescope, Macintosh laryngoscope, flexible fiberoptic scope
C: Arm Label: Intervention; Type: EXPERIMENTAL; Interventions: Device: Macintosh blade, Device: D-Blade, Device: Intubation | Intervention Type: DEVICE; Name: Macintosh blade; Assigned to Arm(s): Intervention | Intervention Type: DEVICE; Name: D-Blade; Assigned to Arm(s): Intervention | Intervention Type: DEVICE; Name: Intubation; Assigned to Arm(s): Intervention
D: Arm Label: Macintosh Direct Laryngoscope; Type: ACTIVE_COMPARATOR; Interventions: Device: Intubation with GlideScope Video Laryngoscope or Macintosh Direct Laryngoscope | Arm Label: GlideScope Video Laryngoscope; Type: ACTIVE_COMPARATOR; Interventions: Device: Intubation with GlideScope Video Laryngoscope or Macintosh Direct Laryngoscope | Intervention Type: DEVICE; Name: Intubation with GlideScope Video Laryngoscope or Macintosh Direct Laryngoscope; Assigned to Arm(s): GlideScope Video Laryngoscope, Macintosh Direct Laryngoscope

Answer: D