Comparison of the Effects of Nasopharyngeal and Oropharyngeal Airway Use on Gastric Insufflation in Patients Who Are Expected to Have Difficult Mask Ventilation
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 58
- 试验地点
- 2
- 主要终点
- Difference in antral area sizes
研究概览
简要总结
The goal of this clinical trial is to compare the effects of nasopharyngeal and oropharyngeal airway on gastric insufflation in patients undergoing general anesthesia and expected difficult mask ventilation. The main questions it aims to answer are:
- Is there a difference between the presence of gastric insufflation in the use of nasopharyngeal and oropharyngeal airways?
- Is there a difference between the antral area sizes measured before and after ventilation After general anesthesia induction, nasopharyngeal or oropharyngeal airway will be placed in participants and real-time ultrasonographic gastric antral area imaging will be performed during mask ventilation. Researchers will compare the effects of nasopharyngeal and oropharyngeal airway use on gastric insufflation.
详细描述
Patients who are expected to have difficult mask ventilation and receive general anesthesia will be included in the study. After preoperative gastric antral area measurements of the patients by ultrasonography, preoxygenation will be applied and anesthesia induction will be performed. Real-time gastric ultrasonography will be performed during pressure-controlled mask ventilation for 2 minutes after nasopharyngeal or oropharyngeal airway insertion, and then antral area measurement will be repeated. After the trachea was intubated, the antral area measurement was once again performed. At the 30th, 60th, 90th and 120th seconds of ventilation, patients' SpO2, EtO2, EtCO2, peak airway pressure, tidal volume, leak volumes and hemodynamic changes will be recorded.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 84 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients receiving general anesthesia
- •ASA score I-II-III
- •At least 3 criteria out of 5 difficult mask criteria defined by Langeron et al.
排除标准
- •Patients who did not give informed consent
- •Risk of aspiration
- •Respiratory disease
- •Facial, oropharyngeal or nasopharyngeal pathology
- •Pregnancy
结局指标
主要结局
Difference in antral area sizes
时间窗: During 2 minutes mask ventilation
Difference in antral area sizes measured by ultrasound imaging before and after ventilation
Presence of gastric insufflation
时间窗: During 2 minutes mask ventilation
Presence of gastric insufflation by ultrasound imaging in nasopharyngeal and orophrayngeal airway use
次要结局
- Leakage volume(During 2 minutes mask ventilation)
研究者
derya özkan
Professor MD
Diskapi Teaching and Research Hospital