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Study for Appropriate Operating Table Height for Endotracheal Intubation Under Direct Laryngoscopy

This study has been completed.
Information provided by (Responsible Party):
Mi Ja Yun, MD, PhD, National Medical Center, Seoul Identifier:
First received: July 23, 2012
Last updated: January 2, 2014
Last verified: January 2014
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.


Study Type: Observational
Study Design: Observational Model: Case-Crossover
Time Perspective: Prospective
Official Title: Study for Appropriate Operating Table Height for Endotracheal Intubation Under Direct Laryngoscopy

Further study details as provided by Mi Ja Yun, MD, PhD, National Medical Center, Seoul:

Primary Outcome Measures:
  • larynx [ Time Frame: larynx ]

Enrollment: 8
Study Start Date: March 2010
Study Completion Date: March 2011
Primary Completion Date: March 2011 (Final data collection date for primary outcome measure)
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.

Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
certificated anesthesiologists

Inclusion Criteria:

  • have experiences of more than 100 cases of endotracheal intubation

Exclusion Criteria:

  • have acute or chronic musculoskeletal disease or pain
  Contacts and Locations
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Please refer to this study by its identifier: NCT01649973

Sponsors and Collaborators
National Medical Center, Seoul
Study Chair: Mija Yun National Medical Center, Seoul
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Mi Ja Yun, MD, PhD, Professor, National Medical Center, Seoul Identifier: NCT01649973     History of Changes
Other Study ID Numbers: SeoulNUBH-B-1003-096-012
Study First Received: July 23, 2012
Last Updated: January 2, 2014 processed this record on May 25, 2017