NCT02957084|Completed
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Sponsor study identifier
observational
1,142
0 countries
N/A
Study Start
March 2013
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
December 2014
Actual (reported)Study Completion
December 2014
Actual (reported)In this prospective, open cohort study the diagnostic value of tests based on neck anatomy in predicting difficult laryngoscopy was assessed. The anatomic features of the neck measured were head extension, mouth opening, upper lip bite, Mallampati class, thyromental distance, sternomental distance, ratio of height to thyromental, neck circumference, thyrosternal distance, hyomental distance at full head extension (FHE) and at neutral position (NP), ratio of neck circumference to thyromental distance and ratio of hyomental distance FHE to hyomental distance NP.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 2014
Actual (reported)Click on a node to explore related trials.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
March 2013
Date type not reportedThis date has not been verified as actual or estimated.
December 2014
Actual (reported)December 2014
Actual (reported)October 29, 2016
Actual (reported)November 7, 2016
Actual (reported)Difficult laryngoscopy classification using Cormack-Lehane Grade
Assessment of difficult laryngoscopy at the time of the airway management procedure. Classified as Grade I - visualization of entire laryngeal aperture, grade II - visualization of only posterior commissure of laryngeal aperture, grade III - visualization of only epiglottis, grade IV - visualization of just the soft palate.
immediate
Thyromental distance measured in cm with a measuring tape
immediate
Sternomental distance measured in cm with a measuring tape
immediate
Ratio of height to thyromental distance
immediate
Thyrosternal distance calculated in cm
immediate
Neck circumference measured in cm with a measuring tape
immediate
Adult patients with BMI less than 35 kg/m2, wihthout any known neck or airway pathology, scheduled for surgical procedures under general anaesthesia with tracheal intubation were assessed for eligibility to be included in the study.
Frova G, Sorbello M. Algorithms for difficult airway management: a review. Minerva Anestesiol. 2009 Apr;75(4):201-9. Epub 2008 Oct 23.
Cheney FW. The American Society of Anesthesiologists Closed Claims Project: what have we learned, how has it affected practice, and how will it affect practice in the future? Anesthesiology. 1999 Aug;91(2):552-6. doi: 10.1097/00000542-199908000-00030. No abstract available.
Chryssoula Staikou, MD, PhD, Assistant Professor
National and Kapodistrian University of Athens, 1st Department of Anaesthesia, Aretaieio Hospital
1,142 participants (actual enrollment reported by the registry).
First Submitted
October 29, 2016
First Posted
November 7, 2016
Study Start
March 2013
Date type not reportedThis date has not been verified as actual or estimated.
Videolaryngoscopes for Tracheal Intubation
Contact the study team to confirm eligibility.
Chipas A, Ellis W, Zaglaniczny K. Airway management. In: Zaglaniczny K, Nagelhout J. Nurse Anesthesia. 3rd edition. USA: Elsevier Saunders; 2004:408
Crosby ET, Cooper RM, Douglas MJ, Doyle DJ, Hung OR, Labrecque P, Muir H, Murphy MF, Preston RP, Rose DK, Roy L. The unanticipated difficult airway with recommendations for management. Can J Anaesth. 1998 Aug;45(8):757-76. doi: 10.1007/BF03012147.
Lundstrom LH. Detection of risk factors for difficult tracheal intubation. Dan Med J. 2012 Apr;59(4):B4431.
Peterson GN, Domino KB, Caplan RA, Posner KL, Lee LA, Cheney FW. Management of the difficult airway: a closed claims analysis. Anesthesiology. 2005 Jul;103(1):33-9. doi: 10.1097/00000542-200507000-00009.
Rucker JC, Cole D, Guerina LR, Zoran N, Chung F, Friedman Z. A prospective observational evaluation of an anatomically guided, logically formulated airway measure to predict difficult laryngoscopy. Eur J Anaesthesiol. 2012 May;29(5):213-7. doi: 10.1097/EJA.0b013e3283502168.
Shiga T, Wajima Z, Inoue T, Sakamoto A. Predicting difficult intubation in apparently normal patients: a meta-analysis of bedside screening test performance. Anesthesiology. 2005 Aug;103(2):429-37. doi: 10.1097/00000542-200508000-00027.
Koay CK. Difficult tracheal intubation--analysis and management in 37 cases. Singapore Med J. 1998 Mar;39(3):112-4.
Burkle CM, Walsh MT, Harrison BA, Curry TB, Rose SH. Airway management after failure to intubate by direct laryngoscopy: outcomes in a large teaching hospital. Can J Anaesth. 2005 Jun-Jul;52(6):634-40. doi: 10.1007/BF03015776.
Cattano D, Panicucci E, Paolicchi A, Forfori F, Giunta F, Hagberg C. Risk factors assessment of the difficult airway: an italian survey of 1956 patients. Anesth Analg. 2004 Dec;99(6):1774-1779. doi: 10.1213/01.ANE.0000136772.38754.01.
Rose DK, Cohen MM. The airway: problems and predictions in 18,500 patients. Can J Anaesth. 1994 May;41(5 Pt 1):372-83. doi: 10.1007/BF03009858.
Turkan S, Ates Y, Cuhruk H, Tekdemir I. Should we reevaluate the variables for predicting the difficult airway in anesthesiology? Anesth Analg. 2002 May;94(5):1340-4, table of contents. doi: 10.1097/00000539-200205000-00055.
Cormack RS, Lehane J. Difficult tracheal intubation in obstetrics. Anaesthesia. 1984 Nov;39(11):1105-11.
Khan ZH, Kashfi A, Ebrahimkhani E. A comparison of the upper lip bite test (a simple new technique) with modified Mallampati classification in predicting difficulty in endotracheal intubation: a prospective blinded study. Anesth Analg. 2003 Feb;96(2):595-9, table of contents. doi: 10.1097/00000539-200302000-00053.
Patil VU, Stehling LC, Zauder HL. Predicting the difficulty of intubation utilizing an intubation gauge. Anesthesiol Rev. 1983;10:32-3.
Savva D. Prediction of difficult tracheal intubation. Br J Anaesth. 1994 Aug;73(2):149-53. doi: 10.1093/bja/73.2.149.
Naguib M, Malabarey T, AlSatli RA, Al Damegh S, Samarkandi AH. Predictive models for difficult laryngoscopy and intubation. A clinical, radiologic and three-dimensional computer imaging study. Can J Anaesth. 1999 Aug;46(8):748-59. doi: 10.1007/BF03013910.
Gupta S, Sharma R, Jain D. Airway assessment: predictors of difficult airway. Indian J Anaesth. 2005:49(4):257-62
Schmitt HJ, Kirmse M, Radespiel-Troger M. Ratio of patient's height to thyromental distance improves prediction of difficult laryngoscopy. Anaesth Intensive Care. 2002 Dec;30(6):763-5. doi: 10.1177/0310057X0203000607.
Huh J, Shin HY, Kim SH, Yoon TK, Kim DK. Diagnostic predictor of difficult laryngoscopy: the hyomental distance ratio. Anesth Analg. 2009 Feb;108(2):544-8. doi: 10.1213/ane.0b013e31818fc347.
Greek Society for Airway management, Basic and Advanced Management of the Airway, 2nd edition, Athens, 2011
Primary Completion
December 2014
Actual (reported)Study Completion
December 2014
Actual (reported)Last Updated
November 7, 2016
Record last verified: 2016-11
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