Videoscope Guided Flexible LMA Insertion

Videoscope Guided Flexible LMA Insertion : Comparison With Blind Insertion

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03510299

Enrollment

100

Registered

2018-04-27

Start date

2017-01-20

Completion date

2017-12-31

Last updated

2018-05-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Ideal Position of LMA Flexible

Brief summary

Laryngeal Mask Airway Flexible (LMA Flexible) is useful in various surgery because of its unique design. The flexometallic tube allows it could be used in head and neck related surgery but also make insertion more difficult. The ideal position of LMA Flexible is important because in most case, the surgery requiring LMA Flexible allows movements of the stem or patient's head during operation without dislodgement of LMA Flexible. Several studies have examined different techniques like assisting LMA Flexible with rigid introducers or lifting epiglottis with direct laryngoscope. But there is no study using videolaryngoscope (VL) for LMA Flexible insertion. The investigator hypothesized that McGrath(McGRATH™ MAC video laryngoscope;Aircraft Medical Ltd, UK.), one kind of the VL, assisted insertion would increase the success rate of LMA Flexible insertion by lifting epiglottis and securing a view while LMA Flexible is seated. The aim of this study was to investigate the efficacy of the McGrath VL assisted insertion of LMA Flexible compared with the standard method of digital manipulation technique in regard to the ideal anatomical position and sealing pressure in anesthetized adult patients.

Interventions

DEVICEMcgrath

McGrath assisted insertion of LMA flexible

DEVICEControl

Digital manipulation technique of LMA flexible insertion

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

OTHER

Masking

DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender

ALL

Age

19 Years to 70 Years

Healthy volunteers

Inclusion criteria

* ASA (American society of anesthesiologist) physical status classification system I and II, * scheduled to elective general anesthesia with the use of LMA

Exclusion criteria

* suspected difficult airway * a history of a recent upper airway tract infection * gastroesophageal reflux * body mass index \> 30 kg/m2

Design outcomes

Primary

Measure	Time frame
Ideal positioning rate of LMA flexible	3 minute after LMA flexible insertion

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026