Clinical trial NCT02482870: Efficiency of the King Vision Video Laryngoscope
Official title: Comparison of King Vision Video Laryngoscope and Macintosh Laryngoscope in Terms of First Pass Intubation Success Rate, Intubation Time, Glottic View Time, and Complications Related to Laryngoscopy
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Respiratory Failure
Intubation
Lead sponsor: Recep Tayyip Erdogan University
Sponsor class: OTHER
First posted: 2015-06-26
Enrollment: 388
Sex: ALL
Minimum age (years): 18
Maximum age (years): 60
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: SEQUENTIAL
Intervention model description: Patients scheduled for general anesthesia with endotracheal intubation will be randomized to either intubation with Macintosh laryngoscope first or King Vision videolaryngoscope first. All patients will be intubated with both laryngoscopes.
Primary purpose: OTHER

Brief summary: The investigators studied the efficiency of Macintosh laryngoscope and the King Vision video laryngoscope in adult patients scheduled for general anesthesia. Best Cormack-Lehane score obtained, glottic view time, intubation time, time to ventilation, correlation between the Mallampati classification and the Cormack-Lehane grades, and complications related to laryngoscopy and intubation has been investigated.

Detailed description: Securing the airway is essential in general anesthesia. Anesthetic problems related to airway management constitute 17% of closed claims, difficult intubation being the most common one with an occurrence rate of 5%. Problems like delayed intubation, misplaced tracheal tube, or airway trauma are frequently seen in outpatient settings and end up with either death or hypoxic brain damage. Therefore, preoperative visit should include detailed assessment of the airways according to clues of difficult intubation.Several studies compared the King Vision video laryngoscope with other laryngoscopes in manikins simulating difficult airway scenarios, and reported better glottic views. The investigators aimed to study the correlation between the Mallampati classification and the glottic views (Cormack-Lehane grade) obtained with Macintosh laryngoscopy, and the King Vision video laryngoscopy in adult patients scheduled for general anesthesia. Secondary outcomes will be successful intubation rate, time to obtain the best view, time to successful intubation, and complications related to laryngoscopy will be compared.

Eligibility criteria: Inclusion Criteria:

* scheduled for general anesthesia
* age higher than 18 years
* age lower than 60 years

Exclusion Criteria:

* emergency surgery
* mouth opening less than 2 cm
* American Society of Anesthesiologists (ASA) score higher than 2
* oropharyngeal anomaly
* glottic or supraglottic mass
* history of surgery due to oropharyngeal anomaly, glottic or supraglottic mass

Primary outcomes:
measure: Intubation Success Rate
timeFrame: less than 24 hours
Secondary outcomes:
measure: Intubation Time
timeFrame: less than 24 hours
measure: Glottic View Time
timeFrame: less than 24 hours
measure: Cormack-Lehane Score
timeFrame: less than 24 hours
measure: Airway Complications
timeFrame: The participants' will be followed for the duration of hospital stay, an expected average of 2 days
Other outcomes:
Locations:
city: Rize
country: Turkey
facility: Recep Tayyip Erdogan University
Study officials:
affiliation: Recep Tayyip Erdogan Univeristy, Medical Faculty, Department of Anesthesiology and Reanimation
name: Başar Erdivanli, Asst. Prof.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Metzner J, Posner KL, Lam MS, Domino KB. Closed claims' analysis. Best Pract Res Clin Anaesthesiol. 2011 Jun;25(2):263-76. doi: 10.1016/j.bpa.2011.02.007.
citation: Woodall NM, Benger JR, Harper JS, Cook TM. Airway management complications during anaesthesia, in intensive care units and in emergency departments in the UK". Trends in Anaesthesia and Critical Care 2(2): 58-64, 2012.
citation: Yentis SM. Predicting difficult intubation--worthwhile exercise or pointless ritual? Anaesthesia. 2002 Feb;57(2):105-9. doi: 10.1046/j.0003-2409.2001.02515.x. No abstract available.
citation: Akihisa Y, Maruyama K, Koyama Y, Yamada R, Ogura A, Andoh T. Comparison of intubation performance between the King Vision and Macintosh laryngoscopes in novice personnel: a randomized, crossover manikin study. J Anesth. 2014 Feb;28(1):51-7. doi: 10.1007/s00540-013-1666-9. Epub 2013 Jun 30.
citation: Murphy LD, Kovacs GJ, Reardon PM, Law JA. Comparison of the king vision video laryngoscope with the macintosh laryngoscope. J Emerg Med. 2014 Aug;47(2):239-46. doi: 10.1016/j.jemermed.2014.02.008. Epub 2014 Apr 16.
citation: Yun BJ, Brown CA 3rd, Grazioso CJ, Pozner CN, Raja AS. Comparison of video, optical, and direct laryngoscopy by experienced tactical paramedics. Prehosp Emerg Care. 2014 Jul-Sep;18(3):442-5. doi: 10.3109/10903127.2013.864356. Epub 2014 Jan 24.