AnaesthesiaNCT02159768
Visualization of the Larynx With the Airtraq Laryngoscope and Image Transmission
A study testing Airtraq visualization in people with Anaesthesia, run by National University Hospital, Singapore at 1 site in Singapore.
Trial summary
The Airtraq is a battery powered single use optical laryngoscope with a channel to hold and guide the tracheal tube into the trachea. It enables tracheal intubation in patients with normal and difficult airways, by enabling laryngoscopy without neck movement. Read more about this study
- Who is it for?
- Ages 21 to 80 years
- Conditions the study is for
- Anaesthesia
- What is being tested?
- Airtraq visualization
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteSingapore
- Study dates
- Aug 2013to Aug 2015
- 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 21 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adult patients requiring general anaesthesia for elective surgery and who require tracheal intubation as part of the anaesthesia technique.
- American Society of Anesthesiologists Class I to III physiological status.
Who cannot join
- Children Pregnant patients Patients who have not fasted for at least 6 hours pre surgery Patients at risk of regurgitation and aspiration
Trial locations and contacts
1 site in 1 country.
About this study
The Airtraq is a battery powered single use optical laryngoscope with a channel to hold and guide the tracheal tube into the trachea. It enables tracheal intubation in patients with normal and difficult airways, by enabling laryngoscopy without neck movement. As a single use device, it is cost effective to have these placed in emergency equipment kits, and for use by emergency and military personnel.
However, it does have several limitations. The Airtraq requires the user to place his/her eye to the eyepiece in order to see the advancement of the laryngoscope and the tracheal tube, which may be difficult if the patient is on the ground or in emergency scenarios. Only the user can see through the eyepiece and any assistants are unable to view the larynx, this makes it difficult for assistants to help the operator.
Many handphones now incorporate high quality cameras. In this study, we will evaluate the effectiveness of using the iPhone to aid laryngoscopy with the Airtraq optical laryngoscope during laryngoscopy and intubation in 30 patients presenting for elective surgery under general anaesthesia. We have manufactured an attachment that fits over the eyepiece of the Airtraq, to hold an iPhone to the eyepiece. This will enable to operator and assistants to simultaneously view the insertion of the Airtraq, view the larynx and view the passage of the tracheal tube into the trachea.
Read the detailed description
This study is a single-cohort study design. 30 patients undergoing elective surgery under general anaesthesia will be recruited. They will have endotracheal intubation done with the Airtraq optical laryngoscope and handphone camera assisted visualization.
The Airtraq optical laryngoscope fitted with the attachment holding the camera handphone will be prepared and loaded with an appropriately sized endotracheal tube. A standard general anaesthesia technique will be used. This will include standard monitoring including pulse oximetry, non-invasive blood pressure, ECG and capnography, all started before induction of anaesthesia. Anaesthesia will be induced with proprofol and fentanyl, and muscle relaxation with atracurium.
The airway management procedure will start after induction of anaesthesia and muscle relaxation. The Airtraq optical laryngoscope will be used. The Airtraq is fit with an attachment to hold the camera handphone, and loaded with an endotracheal tube. The Airtraq will be inserted and manipulated until the best view of the patient's laryngeal opening can be seen on the camera handphone screen. The endotracheal tube will then be placed in the patient's trachea and the cuff inflated. Successful intubation will be confirmed by 3-point auscultation and presence of end-tidal carbon dioxide tracing.
- Conditions
- Anaesthesia
- Being tested
- Airtraq visualization
- Keywords
- tracheal intubation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Airtraq visualizationDevice
Also called Airtraq Avant
Larynx visualization with Airtraq and attached handphone
| Study group | Role | What they receive |
|---|---|---|
| Airtraq visualization | Experimental | Larynx visualization with Airtraq and attached handphone Receives: Device: Airtraq visualization |
What is being measured
The primary outcome is the main question the study is designed to answer.
Visualization of Larynx With the Airtraq Laryngoscope and Handphone
The efficacy of viewing the larynx via the handphone attached to the Airtraq laryngoscope will be assessed.
Measured: Intra operative
Secondary outcomes (1)
Transmission of Airtraq View of Larynx
The view of the larynx will be captured by the handphone attached to the Airtraq layryngoscope, and then transmitted to a second investigator.
Measured: Intra operative measurement, time frame within 5 minutes
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Jun 2014 (estimated)
- Study startAug 2013
- Primary completionAug 2015
- Study completionAug 2015
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 AnaesthesiaStudies of the same condition, open and under way.
- More trials run by National University Hospital, SingaporeThe 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
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- National University Hospital, Singapore
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Eugene H Liu, MD, Principal investigator, National University Hospital, Singapore
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02159768
- Sponsor's protocol ID
- 2013/00376
- Status last verified
- Jan 2016
- First submitted
- 9 Jun 2014
- Last updated
- 22 Feb 2016
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 22 Feb 2016. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Visualization of the Larynx With the Airtraq Laryngoscope and Image Transmission
- ClinicalTrials.gov ID
- NCT02159768
- Acronym / sponsor ID
- 2013/00376
- Conditions
- Anaesthesia
- Keywords
- tracheal intubation
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- National University Hospital, SingaporeUniversity, hospital or other
- Study start
- Aug 2013
- Primary completion
- Aug 2015 (actual)
- Study completion
- Aug 2015 (actual)
- First posted
- 10 Jun 2014 (estimated)
- Results
- Posted 22 Feb 2016
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The Airtraq is a battery powered single use optical laryngoscope with a channel to hold and guide the tracheal tube into the trachea. It enables tracheal intubation in patients with normal and difficult airways, by enabling laryngoscopy without neck movement. As a single use device, it is cost effective to have these placed in emergency equipment kits, and for use by emergency and military personnel.
However, it does have several limitations. The Airtraq requires the user to place his/her eye to the eyepiece in order to see the advancement of the laryngoscope and the tracheal tube, which may be difficult if the patient is on the ground or in emergency scenarios. Only the user can see through the eyepiece and any assistants are unable to view the larynx, this makes it difficult for assistants to help the operator.
Many handphones now incorporate high quality cameras. In this study, we will evaluate the effectiveness of using the iPhone to aid laryngoscopy with the Airtraq optical laryngoscope during laryngoscopy and intubation in 30 patients presenting for elective surgery under general anaesthesia. We have manufactured an attachment that fits over the eyepiece of the Airtraq, to hold an iPhone to the eyepiece. This will enable to operator and assistants to simultaneously view the insertion of the Airtraq, view the larynx and view the passage of the tracheal tube into the trachea.
Detailed description
This study is a single-cohort study design. 30 patients undergoing elective surgery under general anaesthesia will be recruited. They will have endotracheal intubation done with the Airtraq optical laryngoscope and handphone camera assisted visualization.
The Airtraq optical laryngoscope fitted with the attachment holding the camera handphone will be prepared and loaded with an appropriately sized endotracheal tube. A standard general anaesthesia technique will be used. This will include standard monitoring including pulse oximetry, non-invasive blood pressure, ECG and capnography, all started before induction of anaesthesia. Anaesthesia will be induced with proprofol and fentanyl, and muscle relaxation with atracurium.
The airway management procedure will start after induction of anaesthesia and muscle relaxation. The Airtraq optical laryngoscope will be used. The Airtraq is fit with an attachment to hold the camera handphone, and loaded with an endotracheal tube. The Airtraq will be inserted and manipulated until the best view of the patient's laryngeal opening can be seen on the camera handphone screen. The endotracheal tube will then be placed in the patient's trachea and the cuff inflated. Successful intubation will be confirmed by 3-point auscultation and presence of end-tidal carbon dioxide tracing.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Airtraq visualization | Experimental | Device: Airtraq visualizationLarynx visualization with Airtraq and attached handphone |
Who may qualify
- Ages
- 21 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Adult patients requiring general anaesthesia for elective surgery and who require tracheal intubation as part of the anaesthesia technique.
- American Society of Anesthesiologists Class I to III physiological status.
Key exclusion criteria (1 listed)
- Children Pregnant patients Patients who have not fasted for at least 6 hours pre surgery Patients at risk of regurgitation and aspiration
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 |
|---|---|---|
| Airtraq visualizationAlso: Airtraq AvantLarynx visualization with Airtraq and attached handphone | Device | Airtraq visualization |
Primary outcome
Visualization of Larynx With the Airtraq Laryngoscope and Handphone
Time frame: Intra operative
The efficacy of viewing the larynx via the handphone attached to the Airtraq laryngoscope will be assessed.
1 secondary outcome
Transmission of Airtraq View of Larynx
Time frame: Intra operative measurement, time frame within 5 minutes
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Feb 2016.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
Related trials for Anaesthesia
Not yet recruitingObservational study
"Comparison of Oxygen Reserve Index (ORI), End-Tidal Oxygen, and Time-Based Preoxygenation Targets With Arterial Blood Gas During Preoxygenation
Preoxygenation Adequacy Assessed by Oxygen Reserve Index, End-tidal Oxygen and Arterial Blood Gas
RecruitingObservational study
Comparison of Hemodynamic Responses During Anesthesia Induction Using Eleveld and Schnider
Spinal (Fusion) Surgery, Total Intravenous Anesthesia
Not yet recruiting
A Randomized Controlled SaCo-VLM Trial
General Anaesthesia Using Supraglotic Airway
Not yet recruiting
Bispectral Index-Guided Propofol Sedation During Endoscopic Retrograde Cholangiopancreatography
Deep Sedation, Endoscopic Retrograde Cholangiopancreatography
RecruitingPhase 4
Comparison of Hemodynamics and Respiratory Function Between Ciprofol and Propofol in Elderly Patients Undergoing Non-intubated General Anesthesia
Comparison of Hemodynamics and Respiratory Function Between Ciprofol and Propofol in Elderly Patients Undergoing Non-intubated General Anesthesia
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.
Eugene H Liu, MD principal investigator
National University Hospital, Singapore
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Airtraq visualization in people with Anaesthesia, run by National University Hospital, Singapore at 1 site in Singapore.
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 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 22 Feb 2016. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Singapore. 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 22 Feb 2016). 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?
Visualization of Larynx With the Airtraq Laryngoscope and Handphone (time frame: Intra operative). 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 22 Feb 2016.