Clinical trial NCT06457165: The Role of Anthropometric Measurements and Ultrasonograpic Suprasternal Adipose Tissue Thickness
Official title: Predicting Difficult Intubation in Obese Patients: The Role of Anthropometric Measurements and Ultrasonograpic Suprasternal Adipose Tissue Thickness
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Intubation; Difficult or Failed
Obesity
Anesthesia
Lead sponsor: Ankara City Hospital Bilkent
Sponsor class: OTHER
First posted: 2024-06-13
Enrollment: 40
Sex: ALL
Minimum age (years): 18
Maximum age (years): 60
Standard ages: ADULT
Accepts healthy volunteers: no
Observational model: OTHER
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: 40 patients between the ages of 18-60 years, ASA 1-3, BMI ≥30 kg/m2, ASA 1-3, scheduled for elective abdominal surgery under general anesthesia.

Brief summary: Prediction of difficult preoperative intubation in obese patients and completion of preparations for difficult intubation both reduce the risk of repeated intubation and prevent complications.

In this study, the investigators aimed to evaluate whether anthropometric measurements are superior in defining difficult preoperative airways.

Detailed description: The World Health Organization (WHO) defines obesity, the incidence of which has increased significantly worldwide and is one of the important causes of difficult airway in terms of anesthesia, as obesity when the body mass index (BMI) is above 30. Access to the upper airway is difficult in obese patients, in whom excessive adipose tissue accumulates in the breast, neck, chest, and abdomen. Determining preoperative difficult intubation parameters in obese patients and entering the case preparation both reduce the risk of repeated intubation and prevent intraoperative and postoperative complications.

However, there are still insufficient tests to predict difficult intubation. Many studies have shown that multiple factors such as Mallampati score, high body mass index (BMI), increased neck circumference, and the ratio of neck circumference to thyromental distance are predictors of difficult intubation in obese patients. The introduction of ultrasonography into daily use has led to the use of ultrasonographic parameters in predicting difficult intubation and laryngoscopy. In this study, the investigators aimed to evaluate whether ultrasonography is useful in defining difficult preoperative airways, in addition to anthropometric measurements.

Eligibility criteria: Inclusion Criteria:

* 18-60 years
* ASA 1-3
* BMI ≥30 kg/m2
* ASA 1-3
* Scheduled for elective abdominal surgery under general anesthesia

Exclusion Criteria:

* \<18 and \>60 years
* ASA\>3
* BMI\<30

Primary outcomes:
measure: Suprasternal Adipose Tissue Thickness
timeFrame: within 10 minutes before going into surgery
Secondary outcomes:
measure: Abdominal circumference
timeFrame: within 10 minutes before going into surgery
measure: Waist circumference
timeFrame: within 10 minutes before going into surgery
measure: Arm circumference
timeFrame: within 10 minutes before going into surgery
measure: Distance between incisions
timeFrame: within 10 minutes before going into surgery
measure: Thyromental distance measurement
timeFrame: within 10 minutes before going into surgery
measure: Sternomental distance measurement
timeFrame: within 10 minutes before going into surgery
measure: Mallampati Score
timeFrame: within 10 minutes before going into surgery(class 1-4; 1 means good and 4 means bad)
measure: Wilson score
timeFrame: within 10 minutes before going into surgery(grade 0-10; 0 means good, 10 means bad)
measure: Cormack-Lehane score
timeFrame: 1. minute after intubation(class 1-4; 1 means good and 4 means bad)
measure: Age
timeFrame: within 10 minutes before going into surgery
measure: Sex
timeFrame: within 10 minutes before going into surgery
measure: ASA
timeFrame: within 10 minutes before going into surgery(grades 1-6; 1 means good and 6 means bad)
measure: BMI
timeFrame: within 10 minutes before going into surgery
Other outcomes:
Locations:
city: Ankara
country: Turkey
facility: Ankara Bilkent City Hospital
Study officials:
affiliation: Ankara City Hospital Bilkent
name: Ayça Tuba Dumanlı Özcan
role: PRINCIPAL_INVESTIGATOR
References: