Airway Manoeuvers - Implications for Airway Management?
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ClinicalTrials.gov Identifier: NCT01679626 |
Recruitment Status :
Completed
First Posted : September 6, 2012
Last Update Posted : September 7, 2012
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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.
Condition or disease |
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Airway Management |
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.
Study Type : | Observational |
Actual Enrollment : | 200 participants |
Official Title: | The Effect of Cricoid Pressure and Backward Upward Rightward Pressure on Airway Dimensions - Implications for Airway Management? |
Study Start Date : | June 2011 |
Actual Primary Completion Date : | July 2011 |
Actual Study Completion Date : | July 2011 |

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Probability Sample |
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.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01679626
Netherlands | |
Catharina Hospital | |
Eindhoven, Netherlands, 5623 EJ |
Responsible Party: | Ralph Maassen, MD, principal investigator, Catharina Ziekenhuis Eindhoven |
ClinicalTrials.gov Identifier: | NCT01679626 |
Other Study ID Numbers: |
2011-06 |
First Posted: | September 6, 2012 Key Record Dates |
Last Update Posted: | September 7, 2012 |
Last Verified: | September 2012 |
cricoid pressure (CP) backward upward rightward pressure (BURP) AP-rima distances Glottic area Extralaryngeal manoeuvres |