Mcgrath Videolaryngoscope Versus Macintosh Laryngoscope in Patients With Manual In-line Stabilization

Anesthesia, General Clinical Trial

Official title:

Comparison of the Mcgrath Videolaryngoscope With the Macintosh Laryngoscope for Orotracheal Intubation in Patients With Manual In-line Stabilization

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT03516539
• Other study ID #: 2017-I043
• Status: Recruiting
• Phase: N/A
• Start date: December 11, 2017
• Est. completion date: July 7, 2018

Study information

• Verified date: April 2018
• Source: Hallym University Medical Center
• Contact: Yi Hwa Choi, Dr.
• Phone: 82-31-380-3813
• Email: pcyhchoi[@]hallym.or.kr
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Video laryngoscopy provides easily a good laryngeal view compared to direct laryngoscopy. It is particularly, useful in patients with anticipated difficult intubation, and also widely used for educational purposes. Among video laryngoscopy, Mcgrath is a recently-developed, portable video laryngoscopy with a liquid crystal display (LCD) monitor and disposable curved blade.

Mcgrath is known to provide excellent laryngeal visibility even in case of anticipated-difficult and anticipated-unsuccessful intubation as well as normal airway management. However, compared with direct laryngoscopy, the success rate of intubation and the time required for anticipated difficult intubation have been reported conflicting results in previous studies. The aim of this study was to compare the intubation success rate, the intubation time and the ease of use with Mcgrath video laryngoscopy and direct laryngoscopy during intubation.

Description:

1. In the operating room, all patients are monitored with an electrocardiograph, noninvasive blood pressure, pulse oximeter, capnograph and Bispectral index (BIS) monitor. After pre-oxygenation with 100% oxygen for 1 minute, intravenous anesthesia (TIVA) with propofol and remifentanyl is administrated and followed by rocuronium (0.6mg/kg). When patients are lost their consciousness, manual mask ventilation is proceeded with 100% oxygen for 2 minutes.

2. Transoral endotracheal intubation is performed using Mcgrath videolaryngoscope (Group ML) and direct laryngoscope (Group DL) using manual in-line stabilization. At this time, the time required for intubation is measure by other medical personnel not engaged in this research.

3. The anesthesiologist assesses Cormack Lehane laryngeal visual field,external laryngeal manipulation, intubation difficulty scales (IDS) and the difficulty of intubation.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 100
• Est. completion date: July 7, 2018
• Est. primary completion date: June 30, 2018
• Accepts healthy volunteers: No
• Gender: All
• Age group: 19 Years to 70 Years

Eligibility

Inclusion Criteria:

• Patients scheduled for general anesthesia requiring tracheal intubation. Patients are aged 19 to 70 years and are American Society of Anesthesiologists physical status I, II.

Exclusion Criteria:

• Patients requiring rapid sequence intubation Patients with poor teeth or high risk of aspiration pneumonia Cervical spine pathology, pharyngeal pathology

Related Conditions & MeSH terms

• Anesthesia, General

Intervention

Device:
• Group ML
Mcgrath videolaryngoscope
• Group DL
Macintosh laryngoscope

Locations

Country	Name	City	State
Korea, Republic of	Hallym University Sacred Heart Hospital	Anyang	Gyeonggi-do

Sponsors (1)

Lead Sponsor	Collaborator
Hallym University Medical Center

Country where clinical trial is conducted

Korea, Republic of, 

References & Publications (4)

Asai T, Murao K, Shingu K. Training method of applying pressure on the neck for laryngoscopy: use of a videolaryngoscope. Anaesthesia. 2003 Jun;58(6):602-3. — View Citation

Rai MR, Dering A, Verghese C. The Glidescope system: a clinical assessment of performance. Anaesthesia. 2005 Jan;60(1):60-4. — View Citation

Shippey B, Ray D, McKeown D. Case series: the McGrath videolaryngoscope--an initial clinical evaluation. Can J Anaesth. 2007 Apr;54(4):307-13. — View Citation

Shippey B, Ray D, McKeown D. Use of the McGrath videolaryngoscope in the management of difficult and failed tracheal intubation. Br J Anaesth. 2008 Jan;100(1):116-9. Epub 2007 Oct 23. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Intubation success rate	success or failure of intubation	1 hour
Secondary	Time required for intubation	time until end tidal carbon dioxide (CO2) measurement after laryngeal blade passing through patient's teeth	1 hour
Secondary	Intubation difficulty score	difficulty at the time of intubation. (easy /moderate/ difficult)	1 hour
Secondary	Complications	oral bleeding, teeth or lip bleeding	1 day