Time to Intubation (TTI) of Obese Patients. A Comparison Macintosh Laryngoscope and Stortz Video Laryngoscope

Completed

• Conditions: Obese
• Interventions: Device: Conventional Macintosh laryngoscope; Device: Stortz videolaryngoscope

• Registration Number: NCT01827085
• Lead Sponsor: Örebro University, Sweden

Brief Summary

The purpose of the study is to investigate wether the use of the Stortz video laryngoscope will render in shorter time for the intubation of obese patients compared with the use of a conventional Macintosh laryngoscope.

Detailed Description

Obese patients are prone to develop desaturation soon after initiation of anaesthesia compared to patients of normal body weight. It is therefore important to keep the time from when spontaneous breathing to when the airway is secured with a orotracheal tube as short as possible. We will therefore investigate if it is possible to shorten this time by using a Stortz videolaryngoscope.

Patients 18-60 years with ASA grade 1-3 and BMI \< 35 that turn up for planned surgery that demands the use of orotracheal tubing and controlled ventilation will be randomly and consecutively enrolled in either of two groups. Patients in both groups will be anaesthetised with the same combination of drugs using Propofol and Remifentanyl or Fentanyl for induction of sleep, combined with Rocuronium for muscle relaxation.

After the induction and relaxation the intubation will be facilitated using either of two laryngoscopes. In the first group a conventional Macintosh laryngoscope, and in the second group a Stortz videolaryngoscope will be used. The time to intubation is defined as the time from grabbing the laryngoscope to when the tube has been inserted and end-tidal carbon dioxide appears on the monitor. Our hypothesis is that we will be able to achieve a faster intubation with the use of videolaryngoscope.

Study Timeline

• Study Start: 2012-05
• Study First Submitted: 2013-03-26
• Study First Submitted QC: 2013-04-04
• Study First Posted: 2013-04-09
• Primary Completion: 2015-09
• Study Completion: 2015-09
• Status Verified: 2016-10
• Last Update Submitted: 2016-10-06
• Last Update Posted: 2016-10-07

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 80

Inclusion Criteria

• Age 18-60
• Obesity defined as BMI > 35
• ASA 1-3

Exclusion Criteria

-known or suspected difficult airway

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Macintosh laryngoscope	Conventional Macintosh laryngoscope	Patients will be intubated with a conventional Machintosh laryngoscope
Videolaryngoscope	Stortz videolaryngoscope	Intubation with Stortz video laryngoscope

Primary Outcome Measures

Name	Time	Method
Time to intubation seconds (s)	Up to 1 minute

Secondary Outcome Measures

Name	Time	Method
Ease of intubation	Two minutes
Presence and level of postoperational throat pain	1 hour to 96 hours postoperative	If throat pain is present, we will use a visual analogue scale to evaluate the level of throat pain 1h, 24h, 72h and 96h after extubation.
Incidence of trauma in each group	Two minutes
Number of attempts of intubation	Two minutes

Trial Locations

Locations (1)

Department of Anaethesia and Intensive Care, University Hospital Örebro; 🇸🇪 Örebro, Sweden