Airway Evaluation by McGrath Videolaryngoscope

Not Applicable

Completed

• Conditions: Anesthesia
• Interventions: Device: McGrath Videolaryngoscope

• Registration Number: NCT01824914
• Lead Sponsor: Huazhong University of Science and Technology

Brief Summary

Difficult tracheal intubation is a cause of severe patient damage and death. There is not a good method to predict it. The McGrath Series 5 video laryngoscope can improve visualization of the glottic structures one to two grades. Moreover unlike a classical laryngoscope with a Macintosh blade, the McGrath provides a view of the glottis without requiring alignment of the oral, pharyngeal and laryngeal axes. In this study, the investigators will use it to compare the Cormack-Lehane score in sedation and anesthesia condition. It helps to know the role of videolaryngoscope in predicting difficult intubation.

Detailed Description

* The enrolled patients were given a bolus of sufentanil 0.3-0.5μg/kg to achieve Ramsay sedation score 2-3. The Cormack-Lehane score in sedation was evaluated by McGrath videolaryngoscope.

* Then the patients were induced with propofol. A bolus of rocuronium was given to facilitate intubation. The Cormack-Lehane score in anesthesia was recorded when intubated by McGrath videolaryngoscope.

* BMI, mouth opening, thyromental distance, intubation duration and ramsay sedation score were also recorded.

* To compare the Cormack-Lehane score in sedate and anesthesia condition

Study Timeline

• Study First Submitted: 2013-03-25
• Study Start: 2013-04
• Study First Submitted QC: 2013-04-02
• Study First Posted: 2013-04-05
• Primary Completion: 2013-10
• Study Completion: 2013-10
• Status Verified: 2014-11
• Last Update Submitted: 2014-11-06
• Last Update Posted: 2014-11-07

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 97

Inclusion Criteria

• patients scheduled for general surgery under general anesthesia
• ASA classification 1-3

Exclusion Criteria

• emergent operation, aspiration risk
• a history of difficult airway
• expected difficult airway
• incooperative patients with mental diseases, hearing disorders

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
McGrath Videolaryngoscope	McGrath Videolaryngoscope	to compare the Cormack-Lehane grade in sedation and anesthesia by McGrath videolaryngoscope

Primary Outcome Measures

Name	Time	Method
Cormack-lehane score in anesthesia condition	1 minute after administration of rocuronium	Based on the Modified Cormack-Lehane classification. 5 degrades. 1-5
Cormack-Lehane score in sedation condition	5 minutes after administration of sufentanil	Based on the Modified Cormack-Lehane classification. 5 degrades. 1-5

Secondary Outcome Measures

Name	Time	Method
Sedation score	5 minutes after administraion of sufentanil	by Ramsay sedation score 1-6. The higher score, the deeper sedation
Duration of intubation	At intubation	The duration of intubation is defined as the time from inserting videolaryngoscope, intubating a tube, to withdrawing videolaryngoscope using a stopwatch.

Trial Locations

Locations (1)

Tongji Hospital, Huazhong University of Science and Technology; 🇨🇳 Wuhan, Hubei, China