Effectiveness of Ultrasonography for the Evaluation of Difficult Airway in Obese Patients.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 2
- 试验地点
- 2
- 主要终点
- Difficult laryngoscopy
研究概览
简要总结
Introduction and Purpose: Obesity is an increasing public health problem all over the world. Obesity is a proinflammatory multisystemic disease defined as hypertrophy and/or hyperplasia of adipose tissue. Obesity is frequently encountered in elective and emergency surgical procedures and causes more difficulties in airway management. Difficult airway, characterized by difficult mask ventilation and difficult intubation, is especially common in obese and morbidly obese patients. Some studies show that the measurement of anterior neck soft tissue thickness at the level of the vocal cords plays an important role in estimating difficult laryngoscopy in obese patients. Difficult intubation is envisaged in patients with pretracheal soft tissue thickness of 28 mm and neck circumference of more than 50 cm at the level of the vocal cord.
In this prospective observational study, it is aimed to measure the preoperative anterior cervical soft tissue thickness with 3 parameters by USG in obese patients undergoing elective surgery, and to evaluate the relationship of these values with the Han Scale and Cormack-Lehane classification and their effectiveness as an indicator of difficult airway.
详细描述
Materials and Methods
157 patients who will undergo elective surgery under general anesthesia, ages between 18-80, BMI ≥ 30 kg/m2, ASA I-II were included in the study. During the preoperative evaluation, patients' gender, age, height, weight, type of surgery, BMI, neck circumference, thyromental distance (TMM), sternomental distance (SMM), hyomental distance (HMM), neck extension, mouth opening and distance between incisors were measured and tooth structure was evaluated. OSAS was evaluated based on the ASA physical condition score and AHI. Mallampati Classification was recorded. Upper lip bite test was performed. Ultrasonographic measurements were made with the patient in the supine position and the head and neck in a neutral position. The Han Scale was used to evaluate difficult mask ventilation. The laryngoscopy image was evaluated and recorded with the Cormack-Lehane Classification, and ≥2b was accepted as difficult laryngoscopy.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Elective surgery, ages between 18-80 BMI over 30, ASA I-II
排除标准
- •Facial and cervical trauma, head and neck malignancy, tracheostomy and thyroid surgery, non-cooperate patients, parturients, difficult airway history.
结局指标
主要结局
Difficult laryngoscopy
时间窗: preoperative evaluation
To determine the difficult airway in obese patients with 3 levels of anterior soft tissue measurement (cm) with ultrasound.
次要结局
- Difficult mask ventilation(preoperative evaluation)
研究者
Nazan KOCAOGLU
Assistant Professor
Balikesir University