Comparison of the Videolaryngoscopes With Manual In-line Stabilization

Not Applicable

Completed

• Conditions: Oral Surgery; Maxillofacial Surgery
• Interventions: Procedure: MILS; Device: McGrath videolaryngoscope; Device: Macintosh laryngoscope; Device: Pentax AWS videolaryngoscope

• Registration Number: NCT02647606
• Lead Sponsor: Ajou University School of Medicine

Brief Summary

Videolaryngoscope is useful to improve the laryngeal view, especially during difficult intubation. There are several kinds of videolaryngoscopes and it is applicable during nasotracheal intubation. In this study, the investigators will compare the McGrath videolaryngoscope and Pentax-AWS with Macintosh laryngoscope for nasotracheal intubation in patients with manual in-line stabilization.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2015-12-28
• Study Start: 2016-01
• Study First Submitted QC: 2016-01-04
• Study First Posted: 2016-01-06
• Primary Completion: 2017-02
• Study Completion: 2017-02
• Status Verified: 2018-11
• Last Update Submitted: 2018-11-04
• Last Update Posted: 2018-11-06

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 120

Inclusion Criteria

• oral or maxillofacial surgery
• ASA class I, II

Exclusion Criteria

• anticipated difficult intubation
• necessity for rapid sequence induction
• cervical spine injury
• bleeding tendency

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
McGrath Group	McGrath videolaryngoscope	MgGrath videolaryngoscope will be used for nasotracheal intubation with MILS
Macintosh Laryngoscope Group	MILS	Macintosh Laryngoscope will be used for nasotracheal intubation with MILS
Macintosh Laryngoscope Group	Macintosh laryngoscope	Macintosh Laryngoscope will be used for nasotracheal intubation with MILS
McGrath Group	MILS	MgGrath videolaryngoscope will be used for nasotracheal intubation with MILS
Pentax-AWS Group	MILS	Pentax-AWS videolaryngoscope will be used for nasotracheal intubation with MILS
Pentax-AWS Group	Pentax AWS videolaryngoscope	Pentax-AWS videolaryngoscope will be used for nasotracheal intubation with MILS

Primary Outcome Measures

Name	Time	Method
POGP score	when laryngoscope is appropriately placed during intubation, approximately 2 seconds	Percentage of glottic opening(POGO)
time for intubation	from holding the laryngoscope until the 1st ventilation after intubation, within 90 seconds
Cormack Lehane Laryngeal view	when laryngoscope is appropriately placed during intubation, approximately 2 seconds

Secondary Outcome Measures

Name	Time	Method
magill forceps	when laryngoscope is appropriately placed during intubation, approximately 5 seconds	when the nasotracheal tube can not introduced to vocal cord manually, magill forceps can hold the tube to advance the tube through vocal cord. The necessity of magill forceps during intubation will be recorded
numeric rating scale for intubation	during intubation, approximately 90 seconds	0-10 (0; no difficulty, 10: hardest)
grade of bleeding	10 seconds after completion of intubation	After confirmation of successful intubation, Yankauer suction was introduced to access the intraoral bleeding during intubation.; Grade is 4 points scale (none/trace/moderate/severe).
external laryngeal manipulation	when laryngoscope is appropriately placed during intubation, approximately 2 seconds	When the laryngeal view is insufficient during laryngoscope, another physician can manipulate the larynx externally to improve the laryngeal view. The necessity of external laryngeal manipulation will be recorded.
IDS (intubation difficulty scale)	during intubation, approximately 90 seconds	IDS score is the sum of the following seven variables: N1: the number of intubation attempts\>1 N2: the number of operators. 1 N3: the number of alternative intubation techniques used N4: glottic exposure (Cormack Lehane grade minus 1) N5: Lifting force required during laryngoscopy (0=normal; 1=increased) N6: necessity for external laryngeal pressure (0=not applied; 1=applied) N7: position of the vocal cords at intubation (0=abduction/ not visualized; 1=adduction)