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Airway Manoeuvers - Implications for Airway Management?

This study has been completed.
Information provided by (Responsible Party):
Ralph Maassen, Catharina Ziekenhuis Eindhoven Identifier:
First received: September 3, 2012
Last updated: September 6, 2012
Last verified: September 2012

In anesthesia, intubation is a technique used to secure an airway. This technique is not always straightforward. Sometimes it is difficult to place an endotracheal tube. There are two manners of giving pressure to the patients neck, to improve view and facilitate intubation.

The investigators hypothesize that by giving this pressure the effective work area is likely to be smaller. The investigators would like to quantify this effect by measuring the effective work area, using a specially designed computer program.

Airway Management

Study Type: Observational
Official Title: The Effect of Cricoid Pressure and Backward Upward Rightward Pressure on Airway Dimensions - Implications for Airway Management?

Further study details as provided by Ralph Maassen, Catharina Ziekenhuis Eindhoven:

Enrollment: 200
Study Start Date: June 2011
Study Completion Date: July 2011
Primary Completion Date: July 2011 (Final data collection date for primary outcome measure)
Detailed Description:

Cricoid pressure (CP) and the backward-upward-rightward pressure (BURP) manoeuver, are extralaryngeal manoeuvers which are widely applied during endotracheal intubation, respectively offering potential protection against passive gastric regurgitation and improved laryngeal view in emergency airway management.

Their validity in achieving an improvement of the laryngeal view has been questioned.

The objective of this study is to measure the change in mean anterior-posterior rima glottidis (APRIMA) distance and mean area under the vocal cords after backward upward rightward pressure (BURP) and cricoid pressure (CP).

The investigators will measure the APRIMA distances and areas under the vocal cords, using a specially created module in the program DeVIDE. The measurements assessed during BURP and CP will be expressed relative to the measurements when no external pressure is applied.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
200 consecutive adult patients scheduled for elective surgery requiring endotracheal intubation.

Inclusion Criteria:

- 200 consecutive adult patients scheduled for elective surgery requiring endotracheal intubation

Exclusion Criteria:

  • BMI > 35 kg.m-2);
  • chronic obstructive pulmonary disease;
  • history of difficult intubation;
  • mouth opening < 3 cm;
  • inadequate neck mobility;
  • history of oropharyngeal pathology.
  Contacts and Locations
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Please refer to this study by its identifier: NCT01679626

Catharina Hospital
Eindhoven, Netherlands, 5623 EJ
Sponsors and Collaborators
Catharina Ziekenhuis Eindhoven
  More Information

Responsible Party: Ralph Maassen, MD, principal investigator, Catharina Ziekenhuis Eindhoven Identifier: NCT01679626     History of Changes
Other Study ID Numbers: 2011-06
Study First Received: September 3, 2012
Last Updated: September 6, 2012

Keywords provided by Ralph Maassen, Catharina Ziekenhuis Eindhoven:
cricoid pressure (CP)
backward upward rightward pressure (BURP)
AP-rima distances
Glottic area
Extralaryngeal manoeuvres processed this record on August 18, 2017