- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00602979
Comparison Study in Adult Surgical Patients of 5 Airway Devices
Prospective, Randomized Comparison of Intubating Conditions With Airtraq Optical, Storz DCI Video, McGRATH Video, GlideScope Video, & Macintosh Laryngoscope in Randomly Selected Elective Adult Surgical Patients
Study Overview
Status
Conditions
Detailed Description
Historically, optical and video laryngoscopes have been used as alternative airway management devices for the difficult airway, and as rescue devices. Their use by experienced laryngoscopists has not been compared in a prospective, randomized, head-to-head comparison for routine airway management in adult surgical patients. Video and optical laryngoscopes have been developed to improve the laryngeal view for tracheal intubation and to decrease physiological stress associated with the procedure. The objective of this study is to determine whether these devices offer superior intubating conditions for routine surgical management, over the Macintosh laryngoscope, which is the current standard. The devices to be compared in this study are the most commonly used video and optical laryngoscopes on the market and are cleared or exempt by the Food and Drug Administration (FDA).
Eligible subjects include elective adult surgical patients with an ASA status between 1 and 3 requiring general endotracheal anesthesia. Subjects with a BMI ≥ 40, or undergoing surgery in close proximity to the neck will be excluded. Prior to surgery, subjects will receive a pre-anesthesia evaluation with particular attention to the airway using the Mallampati classification system; atlanto-occipital joint extension; thyro-mental distance; temporomandibular joint function; inter-incisor distance; and dental assessment. Subjects will be randomized for intubation with one of the five laryngoscopes in equal proportions. The following data were recorded: total intubation time, maximum neck extension using an angle gauge, glottic view, assessed by the anesthesiologist using the Cook modification of the Cormack-Lehane grading system (Figure 1), and ease of tracheal intubation using a 5-point rating scale; 5 (excellent) to 1 (poor). Subjects were queried about soreness or painful swallowing in the PACU and a week later via a phone call.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Elective adult surgical patient requiring general endotracheal anesthesia.
- Males and Females.
- ASA Physical Status 1-3.
- Age 18 years of age and older
Exclusion Criteria:
- Body Mass Index (BMI) ≥35kg/m2.
- If subject is of childbearing potential, a positive pregnancy test at the time of study enrollment.
- Has physical, mental, or medical conditions which, in the opinion of the Investigator, could compromise the subject's welfare, ability to communicate with the study staff, complete study activities, or would otherwise contraindicate study participation.
- Intubated prior to surgery.
- Severe cardiovascular, hepatic or renal disease.
- Need for nasal intubation.
- An investigator of this study.
- Inclusion in another clinical research study.
- Subject's refusal or inability to agree to and to sign the Informed Consent Form in English.
- Subject requiring awake airway management.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Supportive Care
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: Macintosh laryngoscope
Macintosh laryngoscope (control group/direct laryngoscopy) - current standard
|
Used during laryngoscopy to facilitate intubation.
|
Other: Airtraq Optical Laryngoscope
Airtraq® Optical Laryngoscope (an experimental group/indirect laryngoscopy)
|
Used during laryngoscopy to facilitate intubation.
|
Other: Storz DCI Video Laryngoscope
Storz DCI Video Laryngoscope® (an experimental group/indirect laryngoscopy)
|
Used during laryngoscopy to facilitate intubation
|
Other: GlideScope Video Laryngoscope
GlideScope® Video Laryngoscope (an experimental group/indirect laryngoscopy)
|
Used during laryngoscopy to facilitate intubation
|
Other: McGRATH Video Laryngoscope
McGRATH® Video Laryngoscope (an experimental group/indirect laryngoscopy)
|
Used during laryngoscopy to facilitate intubation
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percentage Distribution of Cook's Modification of Cormack-Lehane's Grading System. Each Study Subject Will Receive a Grade of 1, 2A, 2B, 3A, 3B, or 4 in the Cormack-Lehane Grading System.
Time Frame: 1 time during laryngoscopy
|
Percentage distribution of Cook's modification of Cormack-Lehane's grading system. This is a classification that records the best laryngeal view obtained with or without anterior laryngeal pressure. Each study subject will receive a grade of 1, 2A, 2B, 3A, 3B, or 4 in the Cormack-Lehane grading system. Grades 1 and 2A classify as an easy view: when the laryngeal inlet is visible. Grades 2B and 3A classify as restricted: when the posterior glottic structures are visible or the epiglottis is visible and can be lifted. Grades 3B and 4 classify as difficult: when the epiglottis cannot be lifted or when no laryngeal structures are visible. Cook's modification of Cormack-Lehane's Grades 1=1, 2=2A,3=2B, 4=3A, 5=3B, 6=4. |
1 time during laryngoscopy
|
Collaborators and Investigators
Investigators
- Principal Investigator: Jon Samuels, MD, Weill Medical College of Cornell University
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 0710009433
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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