The Performance Comparison of Two Oxygen Delivery Devices [Nasal Cannula and Mask] Used After General Anesthesia.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 500
- 试验地点
- 1
- 主要终点
- Number of Participants With Hypoxemia in Both Groups
研究概览
简要总结
After general anesthesia, there are the risks for airway obstruction, hypoventilation, atelectasis, ventilation-perfusion mismatch, hypercarbia and hypoxemia,so oxygen supplement in PACU seems necessary.
This study aim is to compare the two methods of oxygen supplement which are 1.nasal cannula at O2 flow 4 L/min. 2.oxygen mask with O2 flow 5 L/min. The hypothesis in this study is the 2 methods can equally provide effective oxygen supplement to prevent anesthesia-related hypoxemia. Choosing nasal cannula would be reasonable because it is cheaper and more comfortable to patient.
详细描述
The incidence and causes of hypoxemia in PACU will be identified, if necessary, a higher flow or changing oxygen delivery system can be used to prevent and treat hypoxemia. If any patients fail from oxygen weaning protocol in PACU and need longer oxygen therapy at ward, the duration of oxygen therapy will be recorded and also the compliance with oxygen delivery devices.
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
- None
入排标准
- 年龄范围
- 18 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •General anesthesia
- •Age 18-70 years
- •American Society of Anesthesiology (ASA)physical status 1-3
- •Elective case
排除标准
- •ASA physical status class 4 or more
- •Unstable pulmonary diseases
- •BMI > 35 kg/m2
- •oxygen saturation < 94% when breathing in room air
- •Respiratory muscle weakness eg.myasthenia gravis
- •Central nervous system abnormalities eg.drowsiness, hypoventilation
- •Patients who have been intubated or needed ventilatory support before operation
- •Plan to remain intubated after the operation
- •Intracranial, intrathoracic and upper abdomen surgery
- •Patients who nasogastric tube is inserted
- •Airway problems eg. sinusitis
- •Nasal cavity related surgery or nasal packing eg. endoscopic sinus surgery
- •Patient refusal
研究组 & 干预措施
oxygen mask
Oxygen mask with oxygen flow 5 L/min will be given to allocated post general anesthesia patients. The incidence and causes of hypoxemia will be recorded.
干预措施: oxygen mask (Device)
Oxygen cannula
Oxygen cannula with oxygen flow 4 L/min will be given to allocated post general anesthesia patients. The incidence and causes of hypoxemia will be recorded.
干预措施: oxygen cannula (Device)
结局指标
主要结局
Number of Participants With Hypoxemia in Both Groups
时间窗: In PACU (1 hr after anesthesia)
Hypoxemia is defined as oxygen saturation \< 94%. We record number of participants with hypoxemia in both groups
次要结局
- The Causes of Hypoxemia(In PACU (1 hr after anesthesia))