Correlation of Neck Circumference With Difficult Mask Ventilation and Difficult Laryngoscopy in Morbidly Obese Patients

February 10, 2016 updated by: Aylin Ozdilek, Istanbul University

Correlation of Neck Circumference With Difficult Mask Ventilation and Difficult Laryngoscopy in Morbidly Obese Turkish Patients: A Prospective Clinical Trial

The aim of this study is to determine the correlation of neck circumference with difficult mask ventilation and laryngoscopy in morbidly obese patients.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

Patients' Mallampati score, upper lip bite test, neck mobility, teeth abnormalities were evaluated preoperatively. Mouth opening, sternomental and thyromental distances, neck circumference, thoracic circumference, breast circumference , belly circumference and hip circumference were measured preoperatively.

After anesthesia induciton with propofol and rocuronium, patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.

Laringoscopy was performed with MacIntosh laryngoscop and Cormack Lehane (CL) score was evaluated. CL score III and IV were defined as difficult laryngoscopy.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
120

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey
      • Istanbul, Turkey, 34098
        • Istanbul University Cerrahpasa Medical Faculty

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients with body mass index (BMI) > = 40, applied for elective surgery.

Description

Inclusion Criteria:

  • BMI >= 40
  • American Society of Anesthesiologists (ASA) Physical Status I-III
  • Patients applied for elective surgery

Exclusion Criteria:

  • BMI < 40
  • maxillofacial tumor or fracture
  • mass at the neck
  • mass in the thorax or mediastina
  • scar at the neck area
  • previous radiotherapy history to neck area
  • history of cervical vertebra operations
  • cervical vertebra structure abnormality

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Correlation of difficult laryngoscopy with neck circumference
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy.
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with neck circumference
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Correlation of difficult laryngoscopy with modified mallampati score
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy.
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with modified mallampati score
Time Frame: Ventilation difficulty scale was assessed after during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed after during mask ventilation
Correlation of difficult laryngoscopy with neck movement
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy.
Cormack Lehane score was assessed during laryngoscopy
with neck movement
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation
Correlation of difficult laryngoscopy with dentition
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy.
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with dentition
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation
Correlation of difficult laryngoscopy with upper lip bite test
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with upper lip bite test
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation
Correlation of difficult laryngoscopy with mouth opening
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with mouth opening
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation
Correlation of difficult laryngoscopy with sternomental distance
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with sternomental distance
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation
Correlation of difficult laryngoscopy with breast circumference
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with breast circumference
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation
Correlation of difficult laryngoscopy with thorax circumference
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with thorax circumference
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation
Correlation of difficult laryngoscopy with waist circumference
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with waist circumference
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation
Correlation of difficult laryngoscopy with hip circumference
Time Frame: Cormack Lehane score was assessed during laryngoscopy
Cormack Lehane scores III and IV were defined as difficult laryngoscopy
Cormack Lehane score was assessed during laryngoscopy
Correlation of difficult mask ventilation with hip circumference
Time Frame: Ventilation difficulty scale was assessed during mask ventilation
Patients' mask ventilation difficulty was evaluated as defined below: V1- Ventilated by single anesthesist easily; V2- Ventilated by single anesthesist with oral airway; V3- Ventilated by two anesthesists; V4- Unable to mask ventilate. V3 and V4 was defined as difficult mask ventilation.
Ventilation difficulty scale was assessed during mask ventilation

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Istanbul University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Güniz Köksal, Professor, Istanbul University Cerrahpasa Medical Faculty

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2015

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2015

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 20, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 26, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 28, 2015

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 11, 2016

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 10, 2016

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 02-887/2

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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