- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04168840
Ultrasound Parameters to Predict Difficult Airway
Ultrasound has become an essential tool for the daily work of any doctor, but in certain specialties such as Anaesthesiology, its use has greatly increased the safety offered to patients throughout the perioperative period, either to perform nerve blocks, for vascular access, intraoperative hemodynamic management or any other use that allows increasing quality of care.
The management of the upper airway and the diagnosis of pathological conditions are essential skills for any doctor especially for Anaesthesiologist, ER physician, or Intensive Care physician. Because an inadequate airway management continues to be an important contributor to patient mortality and morbidity, any tool that can improve it should be considered as an addition to conventional clinical evaluation.
Unfortunately, most of the clinical parameters that should allow us to assess a potential difficult airway, do not always lead us to an adequate prediction, that is why US(Ultrasound) is use as an emerging tool in many fields, is also gathering strength in this search for a definitive predictor parameter.
Ultrasound has many obvious advantages (safe,fast, repeatable, portable, widely available and gives dynamic images in real time).
Sonographic studies are operator-dependent and although the identification of basic structures could be acquired with only a few hours of training, but more complex studies require a learning curve of months or even years. The high frequency linear probe (5-14 MHz) is probably the most suitable for the airway because images are of superficial structures (within 0-5 cm below the skin surface).
The growing academic interest in the use of US to look for predictors of difficult airway is centred mainly on measurements at the level of pretracheal tissues.
But the greatest limitation of these studies is the disparity of the fat distribution that exists between different ethnic groups and and sexes, and the lack of standardization method in patient´s intubation conditions.
So, the investigator propose to assess different ultrasound windows at the level of pretracheal tissues such as independent predictors of Difficult Airway.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
-
Madrid, Spain, 28027
- Clinica Universidad de Navarra
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Patients (male or female) ASA I-III, aged between 18 and 90 years, undergoing scheduled surgery requiring orotracheal intubation. The signature of the informed consent is required authorizing its inclusion in the study.
Exclusion Criteria:
- Obesity class II defined as a BMI greater than 35.
- Pregnant.
- Cervical tumors, goiter or patients who have required radiotherapy at the cervical level
- Abnormalities that condition anatomy alterations such as facial / cervical fractures.
- Maxillofacial abnormalities
- People who cannot give their consent.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Patient undergoing general anesthesia with intubation
Patient undergoing general anesthesia with intubation We will explore clinical airway parameters and external ultrasound parameters of the airway
|
Compare various clinical test with four ultrasound parameters to predict difficult intubation.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Anterior neck soft tissue thickness measured by ultrasound at hyoid bone
Time Frame: 5 minutes
|
Distance from skin to the midline of hyoid bone measure with lineal ultrasound probe
|
5 minutes
|
Anterior neck soft tissue thickness measured by ultrasound at thyrohyoid membrane
Time Frame: 5 minutes
|
Distance from skin to midline of epiglottis measure with lineal ultrasound probe
|
5 minutes
|
Anterior neck soft tissue thickness measured by ultrasound at anterior commissure of vocal cords
Time Frame: 5 minutes
|
Distance from skin to anterior commisure of vocal cords measure with lineal ultrasound probe
|
5 minutes
|
Anterior neck soft tissue thickness measured by ultrasound at thyrohyoid membrane. Preepiglottic Area.
Time Frame: 5 minutes
|
Calculated with distance from skin to midline of epiglottis and 1 centimeterto left and right side.
|
5 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Modified Mallampati Score
Time Frame: 1 minute
|
Class I: Soft palate, uvula, fauces, pillars visible.
Class II: Soft palate, major part of uvula, fauces visible.
Class III: Soft palate, base of uvula visible.
Class IV: Only hard palate visible.
Class I is better than Class IV for not to be a difficult intubation.
|
1 minute
|
Thyromental distance
Time Frame: 1 minute
|
measured from the thyroid notch to the tip of the jaw with the head extended
|
1 minute
|
Sternomental distance
Time Frame: 1 minute
|
the distance from the suprasternal notch to the mentum and is measured with the head fully extended on the neck and the mouth closed
|
1 minute
|
Interincisor distance
Time Frame: 1 minute
|
DIstance in centimeters between fornt incisors
|
1 minute
|
Upper Lip Bite Test
Time Frame: 1 minute
|
upper lip bite criteria-class I = lower incisors can bite the upper lip above the vermilion line, class II = lower incisors can bite the upper lip below the vermilion line, and class III = lower incisors cannot bite the upper lip.
Class I is the best for not to be a difficult intubation, class III means it´s posibble a difficult laryngoscopy.
|
1 minute
|
neck circumference
Time Frame: 1 minute
|
Using a flexible measuring tape in centimeters, neck circumference at the level of thethyroid cartilage will be measured
|
1 minute
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- UPDA
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Difficult Intubation
-
Lazarski UniversityCompletedIntubation; Difficult or Failed | Difficult Airway | Intubation;DifficultPoland
-
Catharina Ziekenhuis EindhovenCompletedAnesthesia Intubation Complication | Intubation; Difficult | Failed or Difficult Intubation | Failed or Difficult Intubation, Initial EncounterNetherlands
-
Michael MaRecruitingDifficult Intubation | Difficult Airway IntubationIreland
-
Children's Hospital of PhiladelphiaEunice Kennedy Shriver National Institute of Child Health and Human Development... and other collaboratorsCompletedIntubation Complication | Intubation;Difficult | Failed or Difficult Intubation, SequelaUnited States, Canada, Singapore
-
Children's Hospital of PhiladelphiaAgency for Healthcare Research and Quality (AHRQ)RecruitingIntubation Complication | Intubation; Difficult | Failed or Difficult Intubation, SequelaUnited States, Canada, Japan, Italy, New Zealand, Singapore, Australia, Austria, Germany, India, United Kingdom
-
J. Matthias WalzTerminatedSurgery | Difficult Intubation | Anesthesia | Difficult Airway Intubation | Speech DysfunctionUnited States
-
Derince Training and Research HospitalCompletedDifficult Intubation | Difficult AirwayTurkey
-
University at BuffaloTerminatedIntubation Complication | Intubation;DifficultUnited States
-
University Hospitals Coventry and Warwickshire...Oxford University Hospitals NHS TrustCompletedIntubation;Difficult | Tracheal IntubationUnited Kingdom
-
Heinrich-Heine University, DuesseldorfCompleted
Clinical Trials on Compare clinical test with ultrasound parameters
-
Association Pro-arteUniversity Hospital, GrenobleCompleted
-
ADIR AssociationRecruitingChronic Obstructive Pulmonary Disease | Pulmonary Rehabilitation | 6-minute Stepper TestFrance
-
MeLSyTech, LtdCompletedUrinary Incontinence | Sexual Dysfunction | Vaginal Atrophy | Postoperative Care | Preoperative Care | Female Urogenital Diseases | Menopausal Syndrome | Prolapse Genital | Postpartum Period | Postmenopausal Period | Vaginal ProlapseRussian Federation
-
National Heart Centre SingaporeNational University Hospital, Singapore; Khoo Teck Puat Hospital; Singapore General... and other collaboratorsCompletedHeart FailureSingapore
-
Gazi UniversityCompleted
-
South Valley UniversityNot yet recruiting
-
Nova Scotia Health AuthorityDalhousie UniversityNot yet recruitingNeisseria Gonorrheae Infection | Chlamydia Trachomatis InfectionCanada
-
Aalborg UniversityUniversité Catholique de Louvain; Colorado State University; North Denmark RegionRecruitingAutism Spectrum Disorder | Attention Deficit Hyperactivity Disorder | Sensory Processing DisorderDenmark
-
Centre Hospitalier Intercommunal de Toulon La Seyne...Centre Hospitalier Universitaire de Saint Etienne; Investigation network on...CompletedDeep Vein ThrombosisFrance
-
QuironsaludCompletedInflammatory Bowel Diseases | OsteoporosisSpain