Correlation of Difficult Airway Markers With Ultrasonographic Measurements in Obese PatientsNCT07482436
Comparison of Airway Ultrasonography and Laryngoscopy Methods in Obese Patients
A study testing Airway ultrasonography, Macintosh Laryngoscope Intubation and Tuoren Videolaryngoscope Intubation in people with Correlation of Difficult Airway Markers With Ultrasonographic Measurements in Obese Patients, run by Trabzon Kanuni Education and Research Hospital at 1 site in Turkey (Türkiye).
Trial summary
The main objective of this study was to examine the relationship between classical markers used in assessing difficult airway management in obese patients (Mallampati score, thyromental distance, sternomental distance, neck circumference measurement) and ultrasonographic parameters (vocal cord mobility, glottic… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Correlation of Difficult Airway Markers With Ultrasonographic Measurements in Obese Patients
- What is being tested?
- Airway ultrasonography, Macintosh Laryngoscope Intubation and Tuoren Videolaryngoscope Intubation
- Type of treatment
- Medical device, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 180 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Jan 2026to 1 Jul 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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
- Patients who have given their consent
- Patients who underwent surgery under general anesthesia
- Patients over eighteen years of age
- Patients with an American Society of Anesthesiologists (ASA) physical status classification of I-II-III
- Patients with a body mass index (BMI) of 30 kg/m2 or higher
- Patients whose surgery lasts between 60 and 150 minutes
- Patients who underwent surgery under elective conditions will be included.
Who cannot join
- Patients who do not consent,
- those undergoing head and neck surgery,
- those to be operated on in the prone position,
- uncooperative patients (patients with whom communication is not possible),
- those with craniofacial anomalies,
- patients operated on in emergency situations will be excluded from the study.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
Trabzon University Faculty of Medicine Kanuni Training and Research Hospital
Trabzon, 61040
Recep Erin, doctor, +905304699135, erinrecep@gmail.com
About this study
Official title: The Effect of Preoperative and Postoperative Airway Ultrasonography and Different Laryngoscope Uses on Intubation Success and Postoperative Complications in Obese Patients
The main objective of this study was to examine the relationship between classical markers used in assessing difficult airway management in obese patients (Mallampati score, thyromental distance, sternomental distance, neck circumference measurement) and ultrasonographic parameters (vocal cord mobility, glottic opening, hyomental distance, skin-epiglottic distance, and peri-epiglottic space-epiglottic-vocal cord ratio), to compare the effects of these parameters on predicting difficult intubation, and to investigate the effects of different laryngoscopy methods on intubation success and peroperative respiratory complications.
The secondary objective of the study is to investigate the effects of different laryngoscopy methods on hemodynamic responses to intubation. Participants' gender, age, height, weight, BMI, ASA physical status classification, smoking status, comorbidities, STOP-BANG and LEMON scores will be recorded. The glottic score percentage (POGO score), glottic visualization time, endotracheal intubation time, use of assistive maneuvers, and Intubation Difficulty Scale (IDS) parameters will be compared according to the laryngoscopy methods used.
Read more
Participants must meet the following criteria:
- Consent given by the patient
- Operated under general anesthesia
- Over 18 years of age
- American Society of Anesthesiologists (ASA) physical status classification I-II-III
- Body mass index (BMI) of 30 kg/m2 or higher
- Operation duration between 60-150 minutes
- Patients undergoing elective surgery.
Read the detailed description
Unanticipated morbidity related to difficult airway management remains a major concern for anesthesiologists. One of the primary reasons is the high interobserver variability and limited predictive power of currently used bedside airway assessment tests. The use of more objective and reproducible measurement techniques may improve intubation success rates and allow better preparation in cases of anticipated difficult airway.
Ultrasonography (USG) is a rapid, non-invasive, portable imaging modality that provides both static and dynamic real-time visualization. Airway ultrasonography is increasingly used in operating rooms, intensive care units, and emergency departments for detailed assessment of airway anatomy. It provides valuable information regarding upper airway structures, soft tissues of the head and neck, and pretracheal anatomy.
Preoperative airway assessment is the first and most critical step in preventing anesthesia-related airway complications. Recent evidence suggests that incorporating airway ultrasound into routine pre-anesthetic evaluation may improve the prediction of difficult airway compared to conventional clinical assessments alone.
With the global increase in obesity prevalence, anesthesiologists are encountering a growing number of obese patients in daily practice. Numerous studies have identified male sex, advanced age, increased neck circumference, higher body mass index (BMI), obstructive sleep apnea syndrome, higher Mallampati score, higher ASA score, and shorter thyromental distance as predictors of difficult intubation in obese patients. Despite these known predictors, the rate of unanticipated difficult intubation remains considerable.
Videolaryngoscopes have demonstrated high success rates in both anticipated and unanticipated difficult airway scenarios. These devices improve glottic visualization and may increase first-pass intubation success while reducing airway-related complications. In obese patients, videolaryngoscopy may further enhance intubation safety and perioperative outcomes.
This randomized prospective study aims to compare the predictive value of conventional difficult airway markers (Mallampati score, thyromental distance, sternomental distance, and neck circumference) with airway ultrasonographic parameters (vocal cord mobility, glottic opening, hyomental distance, skin-to-epiglottis distance, and peri-epiglottic space-epiglottis-vocal cord ratio) in obese patients undergoing elective surgery under general anesthesia.
Additionally, the study will evaluate the effects of three different laryngoscopy methods (Macintosh direct laryngoscope, Tuoren videolaryngoscope, and Besdata videolaryngoscope) on intubation success, perioperative respiratory complications, and hemodynamic responses. Postoperative airway ultrasonography will be performed to assess potential airway-related complications.
- Conditions
- Correlation of Difficult Airway Markers With Ultrasonographic Measurements in Obese Patients
- Being tested
- Airway ultrasonography, Macintosh Laryngoscope Intubation, Tuoren Videolaryngoscope Intubation, Besdata Videolaryngoscope Intubation
- Keywords
- laryngoscopy, difficult airway, obese patients, airway ultrasonography
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Airway ultrasonographyProcedure or surgery
Preoperative airway ultrasonography will be performed in the waiting area before surgery to evaluate upper airway structures including vocal cord mobility, glottic opening, hyomental distance, skin-to-epiglottis distance, and peri-epiglottic space-epiglottis-vocal cord ratio. Measurements will be obtained with a Mindray Consona N7 ultrasound device while the patient is in the supine position. Each measurement will be performed three times and the average value will be recorded. Postoperative airway ultrasonography will be repeated at 30 minutes in the recovery unit.
Macintosh Laryngoscope IntubationDevice
Endotracheal intubation will be performed using a conventional Macintosh direct laryngoscope under standardized general anesthesia induction.
Tuoren Videolaryngoscope IntubationDevice
Endotracheal intubation will be performed using the Tuoren videolaryngoscope under standardized general anesthesia induction.
Besdata Videolaryngoscope IntubationDevice
Endotracheal intubation will be performed using the Besdata videolaryngoscope under standardized general anesthesia induction.
| Study group | Role | What they receive |
|---|---|---|
| Besdata Videolaryngoscope | Experimental | Participants randomized to this arm will undergo tracheal intubation using the Besdata videolaryngoscope under standardized general anesthesia induction. Receives: Procedure: Airway ultrasonography; Device: Besdata Videolaryngoscope Intubation |
| Tuoren Videolaryngoscope | Experimental | Participants randomized to this arm will undergo tracheal intubation using the Tuoren videolaryngoscope under standardized general anesthesia induction. Receives: Procedure: Airway ultrasonography; Device: Tuoren Videolaryngoscope Intubation |
| Macintosh Laryngoscope | Active comparator | Participants randomized to this arm will undergo tracheal intubation using a conventional Macintosh direct laryngoscope under standardized general anesthesia induction. Receives: Procedure: Airway ultrasonography; Device: Macintosh Laryngoscope Intubation |
What is being measured
The primary outcome is the main question the study is designed to answer.
Prediction of difficult tracheal intubation
Airway ultrasonographic parameters and conventional airway assessment scores will be evaluated to determine their ability to predict difficult tracheal intubation in obese patients undergoing elective surgery under general anesthesia. Difficult tracheal intubation will be defined using the Intubation Difficulty Scale (IDS).
Measured: Periprocedural (during tracheal intubation)
Tracheal intubation success according to laryngoscope type
Tracheal intubation success will be compared among patients randomized to Macintosh laryngoscope, Tuoren videolaryngoscope, and Besdata videolaryngoscope during tracheal intubation in obese patients undergoing elective surgery under general anesthesia.
Measured: During the tracheal intubation procedure
Secondary outcomes (6)
Glottic visualization time
Glottic visualization time will be defined as the time from passage of the laryngoscope blade past the lips until the first visualization of the vocal cords during laryngoscopy. Glottic visualization time will be compared among the Macintosh laryngoscope, Tuoren videolaryngoscope, and Besdata videolaryngoscope groups.
Measured: Periprocedural (during tracheal intubation)
Endotracheal intubation time
Endotracheal intubation time will be defined as the time from passage of the laryngoscope blade past the lips until confirmation of successful tracheal intubation by capnography. Intubation time will be compared among the Macintosh laryngoscope, Tuoren videolaryngoscope, and Besdata videolaryngoscope groups.
Measured: Periprocedural (during tracheal intubation)
Hemodynamic response to tracheal intubation
Hemodynamic parameters will be recorded before anesthesia induction, 1 minute after induction, at 1, 3, 5, and 10 minutes after tracheal intubation, and immediately before extubation to evaluate the effects of different laryngoscopy techniques.
Measured: Periprocedural
Postoperative airway ultrasonographic measurements
Airway ultrasonography will be repeated 30 minutes after extubation in the recovery unit and compared with preoperative ultrasonographic measurements.
Measured: 30 minutes after extubation
Airway-related postoperative complications
Airway-related complications including sore throat, hoarseness, laryngospasm, bronchospasm, hypoxemia, esophageal intubation, and oral trauma will be recorded.
Measured: From intubation to 30 minutes postoperatively
Anesthesiologist satisfaction score
Anesthesiologist satisfaction with the laryngoscope will be evaluated using a 6-item questionnaire based on a 5-point Likert scale (1 = very poor, 5 = excellent). The questionnaire will assess the ease of laryngoscope insertion, quality of glottic visualization, ease of endotracheal tube placement, device handling, need for additional maneuvers, and overall operator satisfaction.
Measured: Immediately after tracheal intubation
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Mar 2026
- Study start1 Jan 2026
- Primary completion1 Jul 2026 (estimated)
- Study completion1 Jul 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Correlation of Difficult Airway Markers With Ultrasonographic Measurements in Obese PatientsStudies 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Participants will be randomized into three parallel groups to undergo tracheal intubation using either a Macintosh laryngoscope, Tuoren videolaryngoscope, or Besdata videolaryngoscope. Each participant will receive only one assigned intervention.
- Masking
- None (open label)
- Enrolment
- 180 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Trabzon Kanuni Education and Research Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ezgi Günaydın, Trabzon Kanuni Education and Research Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07482436
- Sponsor's protocol ID
- TrabzonMF
- Status last verified
- Mar 2026
- First submitted
- 4 Mar 2026
- Last updated
- 19 Mar 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: I plan to share the results after the research is complete.
Publications
Sotoodehnia M, Abbasi N, Bahri RA, Abdollahi A, Baratloo A. Accuracy of airway ultrasound parameters to predict difficult airway using the LEMON criteria as a reference: A cross-sectional diagnostic accuracy study. Turk J Emerg Med. 2023 Jan 2;23(1):38-43. doi: 10.4103/2452-2473.366484. eCollection 2023 Jan-Mar.
PubMed 36818949Wang X, Wang Y, Zheng ZW, Liu YR, Ma WH. Ultrasound measurements for evaluation of changes in upper airway during anaesthesia induction and prediction difficult laryngoscopy: a prospective observational study. Sci Rep. 2022 Nov 3;12(1):18564. doi: 10.1038/s41598-022-21695-2.
PubMed 36329088Ramesh K, Srinivasan G, Bidkar PU. Comparison of Tracheal Intubation Using King Vision (Non-channeled Blade) and Tuoren Video Laryngoscopes in Patients With Cervical Spine Immobilization by Manual In-Line Stabilization: A Randomized Clinical Trial. Cureus. 2023 Aug 14;15(8):e43471. doi: 10.7759/cureus.43471. eCollection 2023 Aug.
PubMed 37711910
Study at a glance
From the registry record, last updated by the sponsor on 19 Mar 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effect of Preoperative and Postoperative Airway Ultrasonography and Different Laryngoscope Uses on Intubation Success and Postoperative Complications in Obese Patients
- ClinicalTrials.gov ID
- NCT07482436
- Acronym / sponsor ID
- TrabzonMF
- Conditions
- Correlation of Difficult Airway Markers With Ultrasonographic Measurements in Obese Patients
- Keywords
- laryngoscopy, difficult airway, obese patients, airway ultrasonography
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 180 participants (estimated)
- Lead sponsor
- Trabzon Kanuni Education and Research HospitalUniversity, hospital or other
- Study start
- 1 Jan 2026 (actual)
- Primary completion
- 1 Jul 2026 (estimated)
- Study completion
- 1 Jul 2026 (estimated)
- First posted
- 19 Mar 2026 (actual)
- 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.
The main objective of this study was to examine the relationship between classical markers used in assessing difficult airway management in obese patients (Mallampati score, thyromental distance, sternomental distance, neck circumference measurement) and ultrasonographic parameters (vocal cord mobility, glottic opening, hyomental distance, skin-epiglottic distance, and peri-epiglottic space-epiglottic-vocal cord ratio), to compare the effects of these parameters on predicting difficult intubation, and to investigate the effects of different laryngoscopy methods on intubation success and peroperative respiratory complications.
The secondary objective of the study is to investigate the effects of different laryngoscopy methods on hemodynamic responses to intubation. Participants' gender, age, height, weight, BMI, ASA physical status classification, smoking status, comorbidities, STOP-BANG and LEMON scores will be recorded. The glottic score percentage (POGO score), glottic visualization time, endotracheal intubation time, use of assistive maneuvers, and Intubation Difficulty Scale (IDS) parameters will be compared according to the laryngoscopy methods used.
Participants must meet the following criteria:
- Consent given by the patient
- Operated under general anesthesia
- Over 18 years of age
- American Society of Anesthesiologists (ASA) physical status classification I-II-III
- Body mass index (BMI) of 30 kg/m2 or higher
- Operation duration between 60-150 minutes
- Patients undergoing elective surgery.
Detailed description
Unanticipated morbidity related to difficult airway management remains a major concern for anesthesiologists. One of the primary reasons is the high interobserver variability and limited predictive power of currently used bedside airway assessment tests. The use of more objective and reproducible measurement techniques may improve intubation success rates and allow better preparation in cases of anticipated difficult airway.
Ultrasonography (USG) is a rapid, non-invasive, portable imaging modality that provides both static and dynamic real-time visualization. Airway ultrasonography is increasingly used in operating rooms, intensive care units, and emergency departments for detailed assessment of airway anatomy. It provides valuable information regarding upper airway structures, soft tissues of the head and neck, and pretracheal anatomy.
Preoperative airway assessment is the first and most critical step in preventing anesthesia-related airway complications. Recent evidence suggests that incorporating airway ultrasound into routine pre-anesthetic evaluation may improve the prediction of difficult airway compared to conventional clinical assessments alone.
With the global increase in obesity prevalence, anesthesiologists are encountering a growing number of obese patients in daily practice. Numerous studies have identified male sex, advanced age, increased neck circumference, higher body mass index (BMI), obstructive sleep apnea syndrome, higher Mallampati score, higher ASA score, and shorter thyromental distance as predictors of difficult intubation in obese patients. Despite these known predictors, the rate of unanticipated difficult intubation remains considerable.
Videolaryngoscopes have demonstrated high success rates in both anticipated and unanticipated difficult airway scenarios. These devices improve glottic visualization and may increase first-pass intubation success while reducing airway-related complications. In obese patients, videolaryngoscopy may further enhance intubation safety and perioperative outcomes.
This randomized prospective study aims to compare the predictive value of conventional difficult airway markers (Mallampati score, thyromental distance, sternomental distance, and neck circumference) with airway ultrasonographic parameters (vocal cord mobility, glottic opening, hyomental distance, skin-to-epiglottis distance, and peri-epiglottic space-epiglottis-vocal cord ratio) in obese patients undergoing elective surgery under general anesthesia.
Additionally, the study will evaluate the effects of three different laryngoscopy methods (Macintosh direct laryngoscope, Tuoren videolaryngoscope, and Besdata videolaryngoscope) on intubation success, perioperative respiratory complications, and hemodynamic responses. Postoperative airway ultrasonography will be performed to assess potential airway-related complications.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
- Model description
- Participants will be randomized into three parallel groups to undergo tracheal intubation using either a Macintosh laryngoscope, Tuoren videolaryngoscope, or Besdata videolaryngoscope. Each participant will receive only one assigned intervention.
| Arm | Type | Receives |
|---|---|---|
| Besdata Videolaryngoscope | Experimental | Procedure: Airway ultrasonography, Device: Besdata Videolaryngoscope IntubationParticipants randomized to this arm will undergo tracheal intubation using the Besdata videolaryngoscope under standardized general anesthesia induction. |
| Tuoren Videolaryngoscope | Experimental | Procedure: Airway ultrasonography, Device: Tuoren Videolaryngoscope IntubationParticipants randomized to this arm will undergo tracheal intubation using the Tuoren videolaryngoscope under standardized general anesthesia induction. |
| Macintosh Laryngoscope | Active comparator | Procedure: Airway ultrasonography, Device: Macintosh Laryngoscope IntubationParticipants randomized to this arm will undergo tracheal intubation using a conventional Macintosh direct laryngoscope under standardized general anesthesia induction. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (7 listed)
- Patients who have given their consent
- Patients who underwent surgery under general anesthesia
- Patients over eighteen years of age
- Patients with an American Society of Anesthesiologists (ASA) physical status classification of I-II-III
- Patients with a body mass index (BMI) of 30 kg/m2 or higher
Key exclusion criteria (6 listed)
- Patients who do not consent,
- those undergoing head and neck surgery,
- those to be operated on in the prone position,
- uncooperative patients (patients with whom communication is not possible),
- those with craniofacial anomalies,
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 |
|---|---|---|
| Airway ultrasonographyPreoperative airway ultrasonography will be performed in the waiting area before surgery to evaluate upper airway structures including vocal cord mobility, glottic opening, hyomental distance, skin-to-epiglottis distance, and peri-epiglottic space-epiglottis-vocal cord ratio. Measurements will be obtained with a Mindray Consona N7 ultrasound device while the patient is in the supine position. Each measurement will be performed three times and the average value will be recorded. Postoperative airway ultrasonography will be repeated at 30 minutes in the recovery unit. | Procedure or surgery | Besdata Videolaryngoscope, Macintosh Laryngoscope, Tuoren Videolaryngoscope |
| Macintosh Laryngoscope IntubationEndotracheal intubation will be performed using a conventional Macintosh direct laryngoscope under standardized general anesthesia induction. | Device | Macintosh Laryngoscope |
| Tuoren Videolaryngoscope IntubationEndotracheal intubation will be performed using the Tuoren videolaryngoscope under standardized general anesthesia induction. | Device | Tuoren Videolaryngoscope |
| Besdata Videolaryngoscope IntubationEndotracheal intubation will be performed using the Besdata videolaryngoscope under standardized general anesthesia induction. | Device | Besdata Videolaryngoscope |
Primary outcome
Prediction of difficult tracheal intubation
Time frame: Periprocedural (during tracheal intubation)
Airway ultrasonographic parameters and conventional airway assessment scores will be evaluated to determine their ability to predict difficult tracheal intubation in obese patients undergoing elective surgery under general anesthesia. Difficult tracheal intubation will be defined using the Intubation Difficulty Scale (IDS).
Tracheal intubation success according to laryngoscope type
Time frame: During the tracheal intubation procedure
Tracheal intubation success will be compared among patients randomized to Macintosh laryngoscope, Tuoren videolaryngoscope, and Besdata videolaryngoscope during tracheal intubation in obese patients undergoing elective surgery under general anesthesia.
6 secondary outcomes
Glottic visualization time
Time frame: Periprocedural (during tracheal intubation)
Endotracheal intubation time
Time frame: Periprocedural (during tracheal intubation)
Hemodynamic response to tracheal intubation
Time frame: Periprocedural
Postoperative airway ultrasonographic measurements
Time frame: 30 minutes after extubation
Airway-related postoperative complications
Time frame: From intubation to 30 minutes postoperatively
Anesthesiologist satisfaction score
Time frame: Immediately after tracheal intubation
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Mar 2026.
- Background: PubMed 36818949Sotoodehnia M, Abbasi N, Bahri RA, Abdollahi A, Baratloo A. Accuracy of airway ultrasound parameters to predict difficult airway using the LEMON criteria as a reference: A cross-sectional diagnostic accuracy study. Turk J Emerg Med. 2023 Jan 2;23(1):38-43. doi: 10.4103/2452-2473.366484. eCollection 2023 Jan-Mar.
- Background: PubMed 36329088Wang X, Wang Y, Zheng ZW, Liu YR, Ma WH. Ultrasound measurements for evaluation of changes in upper airway during anaesthesia induction and prediction difficult laryngoscopy: a prospective observational study. Sci Rep. 2022 Nov 3;12(1):18564. doi: 10.1038/s41598-022-21695-2.
- Background: PubMed 37711910Ramesh K, Srinivasan G, Bidkar PU. Comparison of Tracheal Intubation Using King Vision (Non-channeled Blade) and Tuoren Video Laryngoscopes in Patients With Cervical Spine Immobilization by Manual In-Line Stabilization: A Randomized Clinical Trial. Cureus. 2023 Aug 14;15(8):e43471. doi: 10.7759/cureus.43471. eCollection 2023 Aug.
- Individual participant dataSharing planned: No. I plan to share the results after the research is complete.
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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Airway ultrasonography, Macintosh Laryngoscope Intubation and Tuoren Videolaryngoscope Intubation in people with Correlation of Difficult Airway Markers With Ultrasonographic Measurements in Obese Patients, run by Trabzon Kanuni Education and Research Hospital at 1 site in Turkey (Türkiye).
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 7 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: looking for participants now, as of the sponsor's last update on 19 Mar 2026. 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 Turkey (Türkiye). 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Ezgi Günaydın, MD (+905336834198, ezgunaydin@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Prediction of difficult tracheal intubation (time frame: Periprocedural (during tracheal intubation)). The study lists 2 primary outcomes in all. 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 NCT07482436, which also lists 3 linked publications.
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 19 Mar 2026.