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

Time to Intubation in Obese Patients. A Comparison Between Macintosh Laryngoscope and Stortz Video Laryngoscope

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.

Study Overview

• Status: Completed
• Conditions: Obese
• Intervention / Treatment: Device: Conventional Macintosh laryngoscope; Device: Stortz videolaryngoscope

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 Type: Observational
• Enrollment (Actual): 80

Contacts and Locations

Study Locations

• Sweden
  • Örebro, Sweden, 70351
    • Department of Anaethesia and Intensive Care, University Hospital Örebro

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

In-patients from the University hospital of Orebro who will go through planned surgery

Description

Inclusion Criteria:

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

Exclusion Criteria:

-known or suspected difficult airway

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Macintosh laryngoscope; Patients will be intubated with a conventional Machintosh laryngoscope	Device: Conventional Macintosh laryngoscope
Videolaryngoscope; Intubation with Stortz video laryngoscope	Device: Stortz videolaryngoscope

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Time to intubation seconds (s)	Up to 1 minute

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Presence and level of postoperational throat pain	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.	1 hour to 96 hours postoperative
Ease of intubation		Two minutes
Incidence of trauma in each group		Two minutes
Number of attempts of intubation		Two minutes

Collaborators and Investigators

• Sponsor: Örebro University, Sweden

Study record dates

Study Major Dates

• Study Start: May 1, 2012
• Primary Completion (Actual): September 1, 2015
• Study Completion (Actual): September 1, 2015

Study Registration Dates

• First Submitted: March 26, 2013
• First Submitted That Met QC Criteria: April 4, 2013
• First Posted (Estimate): April 9, 2013

Study Record Updates

• Last Update Posted (Estimate): October 7, 2016
• Last Update Submitted That Met QC Criteria: October 6, 2016
• Last Verified: October 1, 2016

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Overnutrition; Nutrition Disorders; Overweight; Body Weight; Obesity
• Other Study ID Numbers: EPN2012/015