Pleth Variability Index Predicts Hypotension in Beach Chair Position in Mechanically Ventilated Adults During General Anesthesia
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 57
- 试验地点
- 1
- 主要终点
- occurrence of hypotension defined as mean blood pressure less than 65 mmHg or 20% of baseline
研究概览
简要总结
The beach chair position for shoulder operation induces hypotension during general anesthesia. Hypotension is induced by decreased preload and contractility due to anesthesia. Masimo is a pulse oximetry which shows pleth variability index noninvasively. The pleth variability may predict the hypotension during beach chair position.
详细描述
The beach chair position for shoulder operation induces hypotension during general anesthesia. Hypotension is induced by decreased preload and contractility due to anesthesia. Masimo is a pulse oximetry which shows pleth variability index noninvasively. The investigators put the masimo probe before general anesthesia and recorded the values before and after beach chair position, The values include arterial pressure, heart rate, blood pressure, perfusion index, pleth variability index.
The primary end point was the predictive value and threshold or pleth variability index for hypotension induced by the beach chair position. The occurrence of hypotension was counted by using vasopressor. The use of vasopressor was performed when mean blood pressure less than 65 mmHg or 20% of baseline.
The investigators planned to recruit 57 patients.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 20 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •elective shoulder surgery under general anesthesia
排除标准
- •right heart failure
- •morbid obesity (BMI > 30)
- •arrhythmia on preoperative electrocardiography
- •pulmonary hypertension
- •peripheral vascular disease or pulmonary disease
结局指标
主要结局
occurrence of hypotension defined as mean blood pressure less than 65 mmHg or 20% of baseline
时间窗: 10 minutes after beach chair position
hypotension occurs or not after beach chair position and hypotension was defined as mean blood pressure less than 65 mmHg or 20% of baseline
次要结局
未报告次要终点
研究者
Chongwha Baek
Professor
Chung-Ang University Hosptial, Chung-Ang University College of Medicine