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

Istanbul University120 enrolled

Overview

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

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

OBSERVATIONAL

Enrollment

120

Conditions

Morbid Obesity

Eligibility

Sex: ALLMin age: 18 YearsMax age: 65 Years

Medical Language ↔ Plain English

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

Locations (1)

Istanbul University Cerrahpasa Medical Faculty

Istanbul, Turkey (Türkiye)

Outcomes

Primary Outcomes

Correlation of difficult laryngoscopy with neck circumference

Cormack Lehane scores III and IV were defined as difficult laryngoscopy.

Time frame: Cormack Lehane score was assessed during laryngoscopy

Correlation of difficult mask ventilation with neck circumference

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.

Time frame: Ventilation difficulty scale was assessed during mask ventilation

Secondary Outcomes

Correlation of difficult laryngoscopy with modified mallampati score

Cormack Lehane scores III and IV were defined as difficult laryngoscopy.

Time frame: 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

Correlation of difficult laryngoscopy with neck movement

Cormack Lehane scores III and IV were defined as difficult laryngoscopy.

Time frame: Cormack Lehane score was assessed during laryngoscopy

with neck movement

Data from ClinicalTrials.gov

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Time frame: Ventilation difficulty scale was assessed during mask ventilation

Correlation of difficult laryngoscopy with dentition

Cormack Lehane scores III and IV were defined as difficult laryngoscopy.

Time frame: Cormack Lehane score was assessed during laryngoscopy

Correlation of difficult mask ventilation with dentition

Time frame: Ventilation difficulty scale was assessed during mask ventilation

Correlation of difficult laryngoscopy with upper lip bite test

Cormack Lehane scores III and IV were defined as difficult laryngoscopy

Time frame: 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

Correlation of difficult laryngoscopy with mouth opening

Cormack Lehane scores III and IV were defined as difficult laryngoscopy

Time frame: 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

Correlation of difficult laryngoscopy with sternomental distance

Cormack Lehane scores III and IV were defined as difficult laryngoscopy

Time frame: 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

Correlation of difficult laryngoscopy with breast circumference

Cormack Lehane scores III and IV were defined as difficult laryngoscopy

Time frame: 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

Correlation of difficult laryngoscopy with thorax circumference

Cormack Lehane scores III and IV were defined as difficult laryngoscopy

Time frame: 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

Correlation of difficult laryngoscopy with waist circumference

Cormack Lehane scores III and IV were defined as difficult laryngoscopy

Time frame: 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

Correlation of difficult laryngoscopy with hip circumference

Cormack Lehane scores III and IV were defined as difficult laryngoscopy

Time frame: 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