Obesity, Morbid Clinical Trial
Official title:
Is Preoperative Awake Airway Nasoendoscopy A Good Tool To Predict The Expected Difficult Airway In Obese Patients?
Despite the availability of different methods for airway assessment, unexpectedly difficult intubations occur at a frequency of up to 15%. A variety of pre-intubation clinical screening tests have been advocated to predict difficult laryngoscopy and airway but their usefulness is limited in obese patients. Could awake invasive airway assessment be more predictive for difficult airways in obese patients? The use of nasendoscopy assessment for the airway could be a useful additional invasive tool to predict the difficult airway in obese
Status | Recruiting |
Enrollment | 30 |
Est. completion date | March 1, 2022 |
Est. primary completion date | March 1, 2022 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 60 Years |
Eligibility | Inclusion Criteria: - Adult patients between 18-60 years of age either male or female with (ASA I, II or III ), scheduled for a bariatric procedure with a body mass index (BMI) greater than 35 K/M2, will be enrolled Exclusion Criteria: - Patients on the tracheostomy tube - Patients who are unable to give consent |
Country | Name | City | State |
---|---|---|---|
Qatar | ACC, Hamad Medical Corporation | Doha | Doah |
Lead Sponsor | Collaborator |
---|---|
Hamad Medical Corporation |
Qatar,
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Butler PJ, Dhara SS. Prediction of difficult laryngoscopy: an assessment of the thyromental distance and Mallampati predictive tests. Anaesth Intensive Care. 1992 May;20(2):139-42. — View Citation
Collins JS, Lemmens HJ, Brodsky JB, Brock-Utne JG, Levitan RM. Laryngoscopy and morbid obesity: a comparison of the "sniff" and "ramped" positions. Obes Surg. 2004 Oct;14(9):1171-5. — View Citation
Heinrich S, Birkholz T, Ihmsen H, Irouschek A, Ackermann A, Schmidt J. Incidence and predictors of difficult laryngoscopy in 11,219 pediatric anesthesia procedures. Paediatr Anaesth. 2012 Aug;22(8):729-36. doi: 10.1111/j.1460-9592.2012.03813.x. Epub 2012 — View Citation
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Lundstrøm LH, Møller AM, Rosenstock C, Astrup G, Wetterslev J. High body mass index is a weak predictor for difficult and failed tracheal intubation: a cohort study of 91,332 consecutive patients scheduled for direct laryngoscopy registered in the Danish — View Citation
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* Note: There are 14 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Naso-endoscopy views from nose to larynx in obese patients using NOHL score during pre-operative assessment. | Findings will be recorded and scored according to NOHL (N=nose, O= oral, H= hypopharynx and L= Larynx ) every parameter takes a score from 1- 4 during pre-operative assessment.(the maximum values score = 16 and the minimum = 4) | During pre-operative assessment. | |
Secondary | Measurement of neck circumference in Centimeter | This will be measured by centimeter during pre-operative assessment using a ruler | During pre-operative assessment. | |
Secondary | Mouth opening measurement by Centimeter | This will be measured by centimeter between incisors during pre-operative assessment using a ruler and documented by Centimeter | During pre-operative assessment. | |
Secondary | Thyro-mental distance measurement by Centimeter | This will be measured by centimeter from thyroid cartilage to patient's chin during pre-operative assessment using a rule | During pre-operative assessment. | |
Secondary | Difficult mask ventilation score (1 -3) | Degree of Difficulty in mask ventilation will be graded (1= easy, 2= difficult or 3=impossible) during induction of general anaesthesia | During Induction of anesthesia | |
Secondary | Cormak-Lehans grade during induction of anaesthesia | Cormak-Lehans Score will graded during endotracheal intubation and exposure of the larynx. (Grade 1= easy intubation while grade Grade 4= very difficult intubation) | During intubation |
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