LarynxNCT01649973
Study for Appropriate Operating Table Height for Endotracheal Intubation Under Direct Laryngoscopy
An observational study of Larynx, run by National Medical Center, Seoul.
Trial summary
Laryngeal view of the patient and anesthesiologist's discomfort level during endotracheal intubation in relation to the various heights of operating table has not been investigated. The investigators hypothesis is higher table height will improve the laryngeal exposure. Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Larynx
- How many people
- 8 participants
- Where
- No sites listed yet
- Study dates
- Mar 2010to Mar 2011
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Study population: certificated anesthesiologists
Who may be able to join
- have experiences of more than 100 cases of endotracheal intubation
Who cannot join
- have acute or chronic musculoskeletal disease or pain
About this study
Laryngeal view of the patient and anesthesiologist's discomfort level during endotracheal intubation in relation to the various heights of operating table has not been investigated. The investigators hypothesis is higher table height will improve the laryngeal exposure.
Read the detailed description
Eight anesthesiologists will be participated. For each anesthesiologist, 20 patients will be enrolled and they will be randomly allocated into one of 4 groups; T10, T8, T6 or T4. The height of operating table will be adjusted prior to commencement of anesthesia induction to place the patient's forehead at one of four anesthesiologist's dermatome levels (T10, T8, T6 or T4) depending on the group. The best laryngeal views will be graded before and after the anesthesiologist's postural change to improve laryngeal visualization of the patient during intubation. Subjective and objective measurement of anesthesiologists' joint flexion during intubation and discomfort ratings for the mask ventilation or intubation will be recorded.
- Conditions
- Larynx
- Medical subject headings
- Laryngeal Diseases
What is being measured
The primary outcome is the main question the study is designed to answer.
larynx
Measured: larynx
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 Jul 2012 (estimated)
- Study startMar 2010
- Primary completionMar 2011
- Study completionMar 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for LarynxStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case crossover
- Time perspective
- Prospective
- Enrolment
- 8 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Medical Center, Seoul
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Mi Ja Yun, MD, PhD, National Medical Center, Seoul
- Investigators
- Mija Yun, Study chair, National Medical Center, Seoul
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01649973
- Sponsor's protocol ID
- SeoulNUBH-B-1003-096-012
- Status last verified
- Jan 2014
- First submitted
- 23 Jul 2012
- Last updated
- 3 Jan 2014
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Lee HC, Yun MJ, Hwang JW, Na HS, Kim DH, Park JY. Higher operating tables provide better laryngeal views for tracheal intubation. Br J Anaesth. 2014 Apr;112(4):749-55. doi: 10.1093/bja/aet428. Epub 2013 Dec 18.
PubMed 24355831
Study at a glance
From the registry record, last updated by the sponsor on 3 Jan 2014. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Study for Appropriate Operating Table Height for Endotracheal Intubation Under Direct Laryngoscopy
- ClinicalTrials.gov ID
- NCT01649973
- Acronym / sponsor ID
- SeoulNUBH-B-1003-096-012
- Conditions
- Larynx
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 8 participants (actual)
- Lead sponsor
- National Medical Center, SeoulUniversity, hospital or other
- Study start
- Mar 2010
- Primary completion
- Mar 2011 (actual)
- Study completion
- Mar 2011 (actual)
- First posted
- 25 Jul 2012 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Laryngeal view of the patient and anesthesiologist's discomfort level during endotracheal intubation in relation to the various heights of operating table has not been investigated. The investigators hypothesis is higher table height will improve the laryngeal exposure.
Detailed description
Eight anesthesiologists will be participated. For each anesthesiologist, 20 patients will be enrolled and they will be randomly allocated into one of 4 groups; T10, T8, T6 or T4. The height of operating table will be adjusted prior to commencement of anesthesia induction to place the patient's forehead at one of four anesthesiologist's dermatome levels (T10, T8, T6 or T4) depending on the group. The best laryngeal views will be graded before and after the anesthesiologist's postural change to improve laryngeal visualization of the patient during intubation. Subjective and objective measurement of anesthesiologists' joint flexion during intubation and discomfort ratings for the mask ventilation or intubation will be recorded.
Study design
- Observational model
- Case crossover
- Time perspective
- Prospective
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
- Study population
- certificated anesthesiologists
Key inclusion criteria (1 listed)
- have experiences of more than 100 cases of endotracheal intubation
Key exclusion criteria (1 listed)
- have acute or chronic musculoskeletal disease or pain
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
larynx
Time frame: larynx
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Jan 2014.
- Derived from this study: PubMed 24355831Lee HC, Yun MJ, Hwang JW, Na HS, Kim DH, Park JY. Higher operating tables provide better laryngeal views for tracheal intubation. Br J Anaesth. 2014 Apr;112(4):749-55. doi: 10.1093/bja/aet428. Epub 2013 Dec 18.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Mija Yun study chair
National Medical Center, Seoul
Questions about this trial
What is this clinical trial studying?
An observational study of Larynx, run by National Medical Center, Seoul.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 3 Jan 2014. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
larynx (time frame: larynx). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01649973, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Jan 2014; AzTrials last refreshed its copy on 1 Nov 2026.