Airway MorbidityNCT02495259
Comparison of Double Lumen Tube Placement Techniques
A study testing ZU-bend stylet, GlideScope and GlideRite stylet in people with Airway Morbidity and Intubation Complication, run by Emory University at 2 sites in United States.
Trial summary
The purpose of this study is to compare three different standard of care methods of double-lumen endobronchial tube (DLT) placement in patients who are scheduled to have thoracic surgery in which lung isolation is required. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Airway Morbidity, Intubation Complication, Tracheal Intubation Morbidity
- What is being tested?
- ZU-bend stylet, GlideScope and GlideRite stylet
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 19 participants
- Where
- 2 sitesUnited States
- Study dates
- Jul 2015to 27 Jul 2017
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Male and female patients requiring a double-lumen endobronchial tube placement for surgery at Emory University Hospital or Emory University Hospital Midtown
- Patients willing and able to provide written informed consent
Who cannot join
- Patients in whom a previously difficult airway manipulation was recorded on an anesthetic record
- Lung transplantation procedures, as underlying pulmonary disorder that will confound the SpO2 (peripheral capillary oxygen saturation) metric
- Any patient who is receiving anticoagulants in excess of a daily aspirin, patients with an International Normalized Ratio or INR >1
- Patients in whom one lung ventilation or placement of a double-lumen endobronchial tube is contraindicated
- Patients who require a rapid-sequence intubation
- Patients undergoing emergency procedures
Trial locations and contacts
2 sites in 1 country.
United States2 sites
Emory University Hospital Midtown
Atlanta, Georgia, 30308
Emory University Hospital
Atlanta, Georgia, 30322
About this study
Official title: Comparison of Placement of Double-lumen Endobronchial Tube Using GlideScope With 2 Different Stylet Configurations vs Standard Macintosh Laryngoscopy
The purpose of this study is to compare three different standard of care methods of double-lumen endobronchial tube (DLT) placement in patients who are scheduled to have thoracic surgery in which lung isolation is required.
Read the detailed description
The purpose of this study is to compare three different standard of care methods of double-lumen endobronchial tube (DLT) placement in patients who are scheduled to have thoracic surgery in which lung isolation is required. The investigators want to evaluate the technique of placement of the double-lumen endobronchial tube (DLT) using an included stylet that has been radically bent (ZU-bend) as compared to a commercial GlideRite stylet with the GlideScope and direct laryngoscopy using the Macintosh laryngoscope. A double-lumen endobronchial tube (DLT) is a breathing tube utilized to manage the airway when lung separation is needed for a surgical procedure. The investigator wants to evaluate how long it takes for successful placement of the double-lumen endobronchial tube (DLT) and assess the difficulty of the procedure experienced by the physician performing the intubation.
- Conditions
- Airway Morbidity, Intubation Complication, Tracheal Intubation Morbidity, Anesthesia Intubation Complication, Failed or Difficult Intubation, Sequela
- Being tested
- ZU-bend stylet, GlideScope, GlideRite stylet, Macintosh blade, Regular Double-lumen endobronchial tube (DLT) Stylet
- Keywords
- Double-lumen endobronchial tube, Laryngoscopy, intubating stylet
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ZU-bend styletDevice
Laryngoscopy and intubation after induction of anesthesia will be done using the GlideScope and the ZU-bend stylet. The ZU-bend is a specific shaping technique of the intubating stylet that is closely related to the GlideScope blade curvature. Zu-bend stylet is withdrawn as a part of placement procedure during the DLT advancement. Thereafter, GlideScope is removed and placement of the double-lumen endobronchial tube is verified with capnography and fiberoptic bronchoscopy in the usual manner.
GlideScopeDevice
Laryngoscopy and intubation after induction of anesthesia will be done using the the GlideScope technique. The GlideScope is a video laryngoscope that provides a real-time view of the airway and tube placement during intubation. GlideScope is removed after DLT is in the trachea, and placement of the double-lumen endobronchial tube is verified with capnography and fiberoptic bronchoscopy in the usual manner.
GlideRite styletDevice
Laryngoscopy and intubation after induction of anesthesia will be done with the GlideScope using the GlideRite stylet. The GlideRite stylet is specifically designed to work with the GlideScope and provides the necessary rigidity and curvature to an otherwise flexible tube. GlideRite stylet is withdrawn as a part of placement procedure during the DLT advancement. Thereafter, GlideScope is removed and placement of the double-lumen endobronchial tube is verified with capnography and fiberoptic bronchoscopy in the usual manner.
Macintosh bladeDevice
Also called Laryngoscope blade
Direct laryngoscopy and intubation after induction of anesthesia will be done with the Macintosh blade and a regular double-lumen endobronchial tube (DLT) stylet. The Macintosh blade is used to facilitate visualization of the larynx during double or single lumen endobronchial tube placement. After intubation the Macintosh laryngoscope is removed and the confirmation of the successful placement of the double-lumen endobronchial tube in done in the standard fashion.
Regular Double-lumen endobronchial tube (DLT) StyletDevice
Direct laryngoscopy and intubation after induction of anesthesia will be done with a regular double-lumen endobronchial tube (DLT) stylet and the Macintosh blade. The DLT stylet is withdrawn as a part of placement procedure during the DLT advancement. Thereafter, Macintosh laryngoscope is removed and placement of the double-lumen endobronchial tube is verified with capnography and fiberoptic bronchoscopy in the usual manner.
| Study group | Role | What they receive |
|---|---|---|
| ZU-bend stylet with GlideScope technique | Experimental | Subjects scheduled for thoracic surgery in which the surgeon requests lung isolation will undergo laryngoscopy and intubation using the ZU-bend with the GlideScope technique of a double lumen endobronchial tube (DLT) placement as part of the anesthesia procedure prior to surgery. Receives: Device: ZU-bend stylet; Device: GlideScope |
| GlideScope with the GlideRite stylet | Active comparator | Subjects scheduled for thoracic surgery in which the surgeon requests lung isolation will undergo laryngoscopy and intubation using the GlideScope with the GlideRite stylet for placement of a double lumen endobronchial tube (DLT) as part of the anesthesia procedure prior to surgery. Receives: Device: GlideScope; Device: GlideRite stylet |
| Macintosh blade and a regular DLT stylet | Active comparator | Subjects scheduled for thoracic surgery in which the surgeon requests lung isolation will undergo laryngoscopy and intubation using the direct laryngoscopy technique with the Macintosh blade and a regular double lumen endobronchial tube (DLT) stylet as part of the anesthesia procedure prior to surgery. Receives: Device: Macintosh blade; Device: Regular Double-lumen endobronchial tube (DLT) Stylet |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mean Time to Place the Double-lumen Endobronchial Tube
The time taken for successful intubation will be recorded by the anesthetist. The total duration from the time the laryngoscope is placed at the patient's lips to the first detection of End-tidal CO2 (EtCO2), an average of 120 seconds, will be recorded in seconds. A higher duration noted is indicative of a longer time taken for successful intubation. 0 seconds (laryngoscope at patient's lips), (first End-tidal CO2 (EtCO2) detection)
Measured: during laryngoscope placement, up to 120 seconds
Secondary outcomes (5)
Success Rate of First Endobronchial Intubation Attempt
The rate of first intubation attempt success will be recorded by the anesthetist. A successful first attempt intubation is when the double-lumen endobronchial tube is placed during the initial laryngoscopy within 120 seconds. The average time for successful intubation is 120 seconds, which is the time from when the laryngoscope is placed at the patient's lips to the first detection of End-tidal CO2 (EtCO2). Higher numbers of successful first attempt intubations indicate better rates of success of first endobronchial intubation attempts .
Measured: during laryngoscope placement, up to 120 seconds
Assessment of Difficulty of Intubation
The ease of successful placement of the double-lumen endobronchial tube (DLT) will be assessed by the anesthetist's responses to a multi-question form which includes the following items that are scored; overall ease of intubation, laryngoscope insertion, glottic view, double-lumen endobronchial tube (DLT) delivery and placement. The subjective scores range from 0-10; where 0=worst, 10=best. The average time for successful intubation is 120 seconds, which is the time from when the laryngoscope is placed at the patient's lips to the first detection of End-tidal CO2 (EtCO2).
Measured: during laryngoscope placement, up to 120 seconds
Number of Cases With Complications
Number of cases with complications during intubation will be will be assessed by the anesthetist's responses to a multi-question form which includes the following items; blood on device, SpO2 (peripheral capillary oxygen saturation) <96%, lip and dental trauma and double-lumen endobronchial tube (DLT) cuff rupture. The responses are recorded as Yes or No for each item. A 'yes' response indicates a complication. The average time for successful intubation is 120 seconds, which is the time from when the laryngoscope is placed at the patient's lips to the first detection of End-tidal CO2 (EtCO2).
Measured: during laryngoscope placement, up to 120 seconds
Number of Cases of Voice Change
Any voice change in the patient after extubation will be assessed in the Post-Operative Admission Unit (PACU) by asking the patient if any change in voice is experienced (Yes/No). The subjective answer given by the patient will be recorded. The average time for the patient to sufficiently recover to respond is expected to be 60 minutes after extubation.
Measured: Up to 60 minutes after extubation
Throat Pain
Any voice change in the patient after extubation will be assessed in the Post-Operative Admission Unit (PACU) by recording the patient's response to the degree of pain experienced. An analog pain scale will be used for scoring where: 0= no pain and 10= severe pain. The average time for the patient to sufficiently recover to respond is expected to be 60 minutes after extubation.
Measured: Up to 60 minutes after extubation
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Jul 2015 (estimated)
- Study startJul 2015
- Primary completion27 Jul 2017
- Study completion27 Jul 2017
Why it stopped: PI is leaving the institution
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Airway MorbidityStudies of the same condition, open and under way.
- More trials run by Emory UniversityThe sponsor's other registered studies.
- 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Health services research
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 19 participants (actual)
Sponsor and investigators
- Lead sponsor
- Emory University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Igor Zhukov, Emory University
- Investigators
- Igor Zhukov, MD, Principal investigator, Emory University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02495259
- Sponsor's protocol ID
- IRB00081067
- Status last verified
- Jun 2018
- First submitted
- 9 Jul 2015
- Last updated
- 27 Jul 2018
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 27 Jul 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of Placement of Double-lumen Endobronchial Tube Using GlideScope With 2 Different Stylet Configurations vs Standard Macintosh Laryngoscopy
- ClinicalTrials.gov ID
- NCT02495259
- Acronym / sponsor ID
- IRB00081067
- Conditions
- Airway Morbidity, Intubation Complication, Tracheal Intubation Morbidity, Anesthesia Intubation Complication, Failed or Difficult Intubation, Sequela
- Keywords
- Double-lumen endobronchial tube, Laryngoscopy, intubating stylet
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: PI is leaving the institution
- Enrolment
- 19 participants (actual)
- Lead sponsor
- Emory UniversityUniversity, hospital or other
- Study start
- Jul 2015
- Primary completion
- 27 Jul 2017 (actual)
- Study completion
- 27 Jul 2017 (actual)
- First posted
- 13 Jul 2015 (estimated)
- Results
- Posted 27 Jul 2018
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to compare three different standard of care methods of double-lumen endobronchial tube (DLT) placement in patients who are scheduled to have thoracic surgery in which lung isolation is required.
Detailed description
The purpose of this study is to compare three different standard of care methods of double-lumen endobronchial tube (DLT) placement in patients who are scheduled to have thoracic surgery in which lung isolation is required. The investigators want to evaluate the technique of placement of the double-lumen endobronchial tube (DLT) using an included stylet that has been radically bent (ZU-bend) as compared to a commercial GlideRite stylet with the GlideScope and direct laryngoscopy using the Macintosh laryngoscope. A double-lumen endobronchial tube (DLT) is a breathing tube utilized to manage the airway when lung separation is needed for a surgical procedure. The investigator wants to evaluate how long it takes for successful placement of the double-lumen endobronchial tube (DLT) and assess the difficulty of the procedure experienced by the physician performing the intubation.
Study design
- Primary purpose
- Health services research
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| ZU-bend stylet with GlideScope technique | Experimental | Device: ZU-bend stylet, Device: GlideScopeSubjects scheduled for thoracic surgery in which the surgeon requests lung isolation will undergo laryngoscopy and intubation using the ZU-bend with the GlideScope technique of a double lumen endobronchial tube (DLT) placement as part of the anesthesia procedure prior to surgery. |
| GlideScope with the GlideRite stylet | Active comparator | Device: GlideScope, Device: GlideRite styletSubjects scheduled for thoracic surgery in which the surgeon requests lung isolation will undergo laryngoscopy and intubation using the GlideScope with the GlideRite stylet for placement of a double lumen endobronchial tube (DLT) as part of the anesthesia procedure prior to surgery. |
| Macintosh blade and a regular DLT stylet | Active comparator | Device: Macintosh blade, Device: Regular Double-lumen endobronchial tube (DLT) StyletSubjects scheduled for thoracic surgery in which the surgeon requests lung isolation will undergo laryngoscopy and intubation using the direct laryngoscopy technique with the Macintosh blade and a regular double lumen endobronchial tube (DLT) stylet as part of the anesthesia procedure prior to surgery. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Male and female patients requiring a double-lumen endobronchial tube placement for surgery at Emory University Hospital or Emory University Hospital Midtown
- Patients willing and able to provide written informed consent
Key exclusion criteria (6 listed)
- Patients in whom a previously difficult airway manipulation was recorded on an anesthetic record
- Lung transplantation procedures, as underlying pulmonary disorder that will confound the SpO2 (peripheral capillary oxygen saturation) metric
- Any patient who is receiving anticoagulants in excess of a daily aspirin, patients with an International Normalized Ratio or INR >1
- Patients in whom one lung ventilation or placement of a double-lumen endobronchial tube is contraindicated
- Patients who require a rapid-sequence intubation
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| ZU-bend styletLaryngoscopy and intubation after induction of anesthesia will be done using the GlideScope and the ZU-bend stylet. The ZU-bend is a specific shaping technique of the intubating stylet that is closely related to the GlideScope blade curvature. Zu-bend stylet is withdrawn as a part of placement procedure during the DLT advancement. Thereafter, GlideScope is removed and placement of the double-lumen endobronchial tube is verified with capnography and fiberoptic bronchoscopy in the usual manner. | Device | ZU-bend stylet with GlideScope technique |
| GlideScopeLaryngoscopy and intubation after induction of anesthesia will be done using the the GlideScope technique. The GlideScope is a video laryngoscope that provides a real-time view of the airway and tube placement during intubation. GlideScope is removed after DLT is in the trachea, and placement of the double-lumen endobronchial tube is verified with capnography and fiberoptic bronchoscopy in the usual manner. | Device | GlideScope with the GlideRite stylet, ZU-bend stylet with GlideScope technique |
| GlideRite styletLaryngoscopy and intubation after induction of anesthesia will be done with the GlideScope using the GlideRite stylet. The GlideRite stylet is specifically designed to work with the GlideScope and provides the necessary rigidity and curvature to an otherwise flexible tube. GlideRite stylet is withdrawn as a part of placement procedure during the DLT advancement. Thereafter, GlideScope is removed and placement of the double-lumen endobronchial tube is verified with capnography and fiberoptic bronchoscopy in the usual manner. | Device | GlideScope with the GlideRite stylet |
| Macintosh bladeAlso: Laryngoscope bladeDirect laryngoscopy and intubation after induction of anesthesia will be done with the Macintosh blade and a regular double-lumen endobronchial tube (DLT) stylet. The Macintosh blade is used to facilitate visualization of the larynx during double or single lumen endobronchial tube placement. After intubation the Macintosh laryngoscope is removed and the confirmation of the successful placement of the double-lumen endobronchial tube in done in the standard fashion. | Device | Macintosh blade and a regular DLT stylet |
| Regular Double-lumen endobronchial tube (DLT) StyletDirect laryngoscopy and intubation after induction of anesthesia will be done with a regular double-lumen endobronchial tube (DLT) stylet and the Macintosh blade. The DLT stylet is withdrawn as a part of placement procedure during the DLT advancement. Thereafter, Macintosh laryngoscope is removed and placement of the double-lumen endobronchial tube is verified with capnography and fiberoptic bronchoscopy in the usual manner. | Device | Macintosh blade and a regular DLT stylet |
Primary outcome
Mean Time to Place the Double-lumen Endobronchial Tube
Time frame: during laryngoscope placement, up to 120 seconds
The time taken for successful intubation will be recorded by the anesthetist. The total duration from the time the laryngoscope is placed at the patient's lips to the first detection of End-tidal CO2 (EtCO2), an average of 120 seconds, will be recorded in seconds. A higher duration noted is indicative of a longer time taken for successful intubation. 0 seconds (laryngoscope at patient's lips), (first End-tidal CO2 (EtCO2) detection)
5 secondary outcomes
Success Rate of First Endobronchial Intubation Attempt
Time frame: during laryngoscope placement, up to 120 seconds
Assessment of Difficulty of Intubation
Time frame: during laryngoscope placement, up to 120 seconds
Number of Cases With Complications
Time frame: during laryngoscope placement, up to 120 seconds
Number of Cases of Voice Change
Time frame: Up to 60 minutes after extubation
Throat Pain
Time frame: Up to 60 minutes after extubation
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Jul 2018.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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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.
Igor Zhukov, MD principal investigator
Emory University
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing ZU-bend stylet, GlideScope and GlideRite stylet in people with Airway Morbidity and Intubation Complication, run by Emory University at 2 sites in United States.
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 2 inclusion and 6 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: stopped early, as of the sponsor's last update on 27 Jul 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
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?
Yes. Results are posted in the registry (first posted 27 Jul 2018). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Mean Time to Place the Double-lumen Endobronchial Tube (time frame: during laryngoscope placement, up to 120 seconds). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 27 Jul 2018; AzTrials last refreshed its copy on 6 Nov 2026.