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Rigid Video Stylet Vs Conventional Lightwand Intubation (Optiscope)

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified February 2014 by Seoul National University Hospital.
Recruitment status was:  Recruiting
Information provided by (Responsible Party):
Seoul National University Hospital Identifier:
First received: February 21, 2014
Last updated: February 15, 2015
Last verified: February 2014
Lightwand is a useful alternative device for intubation but scooping movement can induce damage and microbleeding of oral mucosa, postoperative hoarseness,sore throat. Optiscope is rigid video stylet which has camera on distal tip of device. In many previous studies, rigid video stylet has proven advantages compared with other intubating devices.

Condition Intervention
Device: Conventional lightwand intubation
Device: Rigid video stylet

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single Blind (Outcomes Assessor)
Primary Purpose: Treatment
Official Title: : Rigid Video Stylet Can Provide More Successful Intubation Than Conventional Lightwand Intubation in Patients With Cervical Spine Operation : A Prospective Randomized Study

Further study details as provided by Seoul National University Hospital:

Primary Outcome Measures:
  • Primary success rate of intubation [ Time Frame: within 90 sec from insertion of device ]
    compare primary success rate of intubation using Optiscope with lightwand intubation

Secondary Outcome Measures:
  • Intubation time [ Time Frame: within 90 seconds from insertion of device ]
    Check the intubation time (sec) Intubation time defines "from insertion of device to oral cavity of patients to confirm successful intubation"

  • postoperative complications [ Time Frame: During PACU stay time expected up to 1hr ]
    check the postoperative hoarseness, sorethroat and using numeric rating scale (0-10 point) we checked sorethroat score

  • postoperative complications [ Time Frame: 24 hr after operation ]
    check the postoperative hoarseness, sorethroat and using numeric rating scale (0-10 point) we checked sorethroat score

  • hemodynamic change [ Time Frame: baseline and 1minute after intubation ]
    check the changes of mean blood pressure, heart rate, pulse oximetry before and after intubation

  • number of intubation trial and scooping movements [ Time Frame: during intubation time, an expected average of 1minute ]
    Check the number of intubation tiral and scooping movements during intubation

Estimated Enrollment: 168
Study Start Date: October 2014
Estimated Primary Completion Date: March 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Lightwand
Conventional lightwand intubation will performe for intubation
Device: Conventional lightwand intubation
Conventional lightwand intubation technique will perform during intubation
Experimental: Optiscope
Rigid video stylet, manufactural named Optiscope, will perform for intubation
Device: Rigid video stylet
Rigid video stylet will inserted through endotracheal tube before induction. After induction with propofol and remifentanil using TIVA infusion pump, rocuronium 0.6mg/kg were used to facilitate intubation. After 2minutes, board-certificated anesthesiologist perform intubation using Optiscope.
Other Name: Optiscope® (Pacific Medical, Seoul, Republic of Korea)


Ages Eligible for Study:   20 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients scheduled for cervical spine surgery under general anesthesia
  • aged between 20- 80 yrs

Exclusion Criteria:

  • Patient who disagrees to participate this study
  • Patient who has history of gastro-esophageal reflux disease, previous airway surgery, an increased risk of aspiration, coagulation disorders
  • Patient who has congenital or acquired abnormalities of the upper airway, tumours, polyps, trauma, abscesses, inflammation or foreign bodies in the upper airway
  Contacts and Locations
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Please refer to this study by its identifier: NCT02073786

Contact: Hee Pyung Park, MD PhD 82-2-2072-2466
Contact: Eugene Kim, MD 82-2-2072-2469

Korea, Republic of
Seoul National University of Hospital Recruiting
Seoul, Korea, Republic of, 110-799
Contact: Hee Pyung Park, MD PhD    82-2-2072-2466   
Contact: Eugene Kim, MD    82-2-2072-2469   
Sponsors and Collaborators
Seoul National University Hospital
Study Director: Hee Pyung Park, MD PhD Professor
Principal Investigator: Eugene Kim, MD fellow
  More Information

Responsible Party: Seoul National University Hospital Identifier: NCT02073786     History of Changes
Other Study ID Numbers: Optiscope_SNUH
Study First Received: February 21, 2014
Last Updated: February 15, 2015

Additional relevant MeSH terms:
Voice Disorders
Laryngeal Diseases
Respiratory Tract Diseases
Respiration Disorders
Otorhinolaryngologic Diseases
Neurologic Manifestations
Nervous System Diseases
Signs and Symptoms
Signs and Symptoms, Respiratory
Pharyngeal Diseases
Stomatognathic Diseases
Respiratory Tract Infections processed this record on April 28, 2017