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Video Analysis of Prehospital Emergency Intubations

6 maj 2019 uppdaterad av: University Hospital Inselspital, Berne

Evaluation of Prehospital Emergency Intubations Using Videolaryngoscopes

The Investigators' knowledge about pre-hospital emergency intubations is still limited. Various factors such as the average and the normal range of intubation time are still unknown. Since its launch Rega videotapes all intubation attempts with the C-MAC videolaryngoscope. The investigators prospectively analysed all routinely recorded intubation videos during one year performed by the Rega crews. The investigators analysed different parameters such as first pass success rate and the time to successfully intubate alongside with others. The goal was to find out more about this difficult procedure, about the problems which regularly occur and on what should be put particular emphasis during training.

Studieöversikt

Status

Avslutad

Betingelser

Detaljerad beskrivning

Pre-hospital emergency intubations are especially hazardous. The incidence of unanticipated difficult airways is higher (9,3 % of prehospital intubations are more difficult than anticipated). The first attempt intubation success rates are lower and the rate of complications compared to in-hospital emergency intubations is higher.

There is conflicting evidence if first attempt intubation success rate in prehospital intubations differs between intubations performed by videolaryngoscopy and direct laryngoscopy. On the other hand in pre-hospital airway management, the use of a C-MAC videolaryngoscope improved the visualization of glottic structures significantly.

The C-MAC has recently launched a new version, which allows videotaping of intubations. Rega decided to videotape all intubation attempts for legal purposes and quality control. These videos are stored at a Rega-based secure central database.

The Investigators knowledge there is only one video-enhanced retrospective analyses of a limited number of videolaryngoscopic pre-hospital intubations.

So far, there is no video-enhanced prospective analysis of first attempt intubation success rates or of the time necessary for successful intubation with videolaryngoscopes in the pre-hospital setting available. Therefore, the investigators intend to determine the exact first attempt intubation success rate and the time necessary to successfully intubate, alongside with parameters such as the Cormack/Lehane grade, blade position (Macintosh vs Miller) and others (e.g. difficulties during intubation) in the pre-hospital physician-staffed HEMS-setting. The investigators' goal is to learn more about what is actually happening during prehospital intubations and what type of difficulties may occur.

The investigators therefore prospectively analysed all routinely recorded intubation videos (using the built-in camera of the C-MAC videolaryngoscope) during one year performed by the Rega crews. These videos show real life intubations through the video function included in the device, only the image from the tip of the laryngoscopy blade inside the patient's mouth is recorded. The operating physicians additionally provided anonymous information about intubation management for each video after returning to the helicopter base

Studietyp

Observationell

Inskrivning (Faktisk)

422

Kontakter och platser

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Studieorter

Schweiz
- - Bern, Schweiz, 3011
    - Bern University Hospital and University of Bern

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

Barn
Vuxen
Äldre vuxen

Tar emot friska volontärer

Nej

Kön som är behöriga för studier

Allt

Testmetod

Icke-sannolikhetsprov

Studera befolkning

All Patients which underwent Intubation performed by the Rega during 1year (15.02.18-14.02.19) because of medical or Trauma associated reasons (with or without cardiac arrest).

Beskrivning

Inclusion Criteria:

• All videos routinely taken from intubations performed during 1 year at the Swiss Air Rescue (Rega) at all 13 helicopter bases

Exclusion Criteria:

Patients who were intubated primarily using other devices without a camera
Intubations that were not recorded (missing data).

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

Vad mäter studien?

Primära resultatmått

Resultatmått	Åtgärdsbeskrivning	Tidsram
First attempt intubation success rate Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	Rate of a successful intubation at first attempt	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured

Sekundära resultatmått

Resultatmått	Åtgärdsbeskrivning	Tidsram
Overall success rate Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	The overall rate of successful intubation	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Time intervals during intubation Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	entry-to-tube time (C-MAC crossing the lips to first appearance of tracheal tube in the field of view), time to intubation (C-MAC crossing the lips for the first time until passage of the tube through the vocal cords, the video is kept running throughout the intubation procedure), time between passage of the tube until removal of the blade from the mouth, overall time (from C-MAC crossing the lips for the first time until removal, the video is kept running throughout the intubation procedure), tube time (time from first appearance of the tube in the field until passage of the tube through the vocal cords), intubation time of the successful intubation attempt (C-MAC crossing the lips in the successful attempt until passage of the tube through vocal cords)	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Number of intubation attempts Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	The total number of attempts needed for the intubation	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Best C/L(Cormack/ Lehane 1-4) grade and best POGO (percent of glottis Opening 0 - 100 %) score Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	The best C/L and best POGO score achieved during the intubation	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Additional Airway devices used Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	If additional devices have been used (e.g. Frova-like,catheter, Magill forceps, suction catheter)	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Number of glottic hits Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	Number of attempts to advance the tracheal tube, but only glottic structures are being hit	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Blade positioning Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	Blade positioning during intubation (Macintosh vs. Miller)	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Unintended blade positions Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	Unintended blade positions (too deep, downfolding of epiglottis)	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Secretion in the mouth and difficulties in visualisation because of it Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	Vomit, blood, saliva	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Fogging of the camera Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	videolaryngoscope camera clear or fog	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Oesophageal intubation Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	Oesophageal fail intubation during the procedure	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Injury of the pharyngeal mucose due to the blade Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	Videolaryngoscope injury of the pharyngeal mucose due to the blade	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured
Open or Closed vocal cords Tidsram: Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured	Positioning of vocal cords if visible (open, closed), start of movement of vocal cords	Starts when the videolaryngoscope is inserted in the patients mouth for the first time and ends when the airway is secured

Samarbetspartners och utredare

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Sponsor

University Hospital Inselspital, Berne

Utredare

Huvudutredare: Lorenz Theiler, Prof., Department of Anaesthesiology and Pain Therapy, Bern University Hospital

Publikationer och användbara länkar

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Allmänna publikationer

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

15 februari 2018

Primärt slutförande (Faktisk)

14 februari 2019

Avslutad studie (Faktisk)

14 februari 2019

Studieregistreringsdatum

Först inskickad

17 april 2019

Först inskickad som uppfyllde QC-kriterierna

24 april 2019

Första postat (Faktisk)

29 april 2019

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

8 maj 2019

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

6 maj 2019

Senast verifierad

1 maj 2019

Mer information

Termer relaterade till denna studie

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

2017-02104

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