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Maintaining the Head Extension by an Assistant Decreases Dental Contact

Maintaining the Head Extension by an Assistant Decreases Dental Contact Between Laryngoscope Blade and Maxillary Incisors During Direct Laryngoscopy

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01427348
Enrollment
68
Registered
2011-09-01
Start date
2011-09-30
Completion date
2012-05-31
Last updated
2012-05-30

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

Conditions

Dental Contact During Direct Laryngoscopy

Brief summary

The purpose of this study is to determine whether the head extension by an assistant decreases dental contact between laryngoscope blade and maxillary incisors during direct laryngoscopy

Interventions

PROCEDUREwith assistant

head extension by an assistant during direct laryngoscopy

PROCEDUREwithout assistant

without head extension by an assistant during direct laryngoscopy

Sponsors

Seoul National University Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* patients undergoing surgery that requires general anesthesia

Exclusion criteria

* disease or injury of cervical spine * dentoalveolar injury * history of difficult intubation * anatomical anomaly of face or airway

Design outcomes

Primary

MeasureTime frameDescription
dental contactup to 10 minutesdental contact between laryngoscope blade and maxillary incisors

Secondary

MeasureTime frameDescription
teeth distanceup to 10 minutesteeth distance between laryngoscope blade and maxillary incisors

Countries

South Korea

Outcome results

None listed

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