Effect of PEEP and Trendelenburg on Ultrasound Size of Internal Jugular and Subclavian Veins: A Cross-over Randomized Controlled Study
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 42
- 试验地点
- 2
- 主要终点
- The cross-sectional area of the jugular veins ( in cm2)
研究概览
简要总结
There is no recommendation for the management of the positive end-expiratory pressure (PEEP) during setting of a central venous catheter (CVC) in a ventilated patient. Several non-randomized studies have investigated the cross-sectional area (AST) ultrasound minor axis for different pressure levels by evaluating a single vessel every time or by not displaying the right or left side in the evaluation. Another study showed that there could be unpredictable size differences between the 2 subclavian veins.
In ventilated patient, the PEEP, which is intrathoracic, will result in a decrease of venous return and thus possibly a superior vena cava dilation, located outside the pleura, depending on their capacitance. Different pressure levels showed an increase of AST with the increase of intra-thoracic pressure on certain veins, in a heterogeneous and not randomized manner.
The primary purpose of the study is to measure the effect of PEEP (0, 5, 10 or 15 cm H2O) and the patient's position (supine or Trendelenburg strict -15-20 °) on the cross-sectional area of the jugular and subclavian veins.
详细描述
There is no recommendation for the management of the positive end-expiratory pressure (PEEP) during setting of a central venous catheter (CVC) in a ventilated patient. Several non-randomized studies have investigated the cross-sectional area (AST) ultrasound minor axis for different pressure levels by evaluating a single vessel every time or by not displaying the right or left side in the evaluation. Another study showed that there could be unpredictable size differences between the 2 subclavian veins.
In ventilated patient, the PEEP, which is intrathoracic, will result in a decrease of venous return and thus possibly a superior vena cava dilation, located outside the pleura, depending on their capacitance. Different pressure levels showed an increase of AST with the increase of intra-thoracic pressure on certain veins, in a heterogeneous and not randomized manner.
The primary purpose of the study is to measure the effect of PEEP (0, 5, 10 or 15 cm H2O) and the patient's position (supine or Trendelenburg strict -15-20 °) on the cross-sectional area of the jugular and subclavian veins.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Any patient ventilated in intensive care is eligible.
- •Age ≥ 18 years
- •Patient with stable hemodynamic status and Mean Blood Pressure (< 65 mmHg)
- •Patient with registered social security number
排除标准
- •clinical sign for a central venous thrombosis (unilateral edema ...).during echography screening before inclusion
- •presence of a central line for more than 48 hours.
- •Anechoic patient (checked during echography screening)
- •History of cervical spine surgery.
- •IntraCranial HyperTension
- •patient in shock with hemodynamic instability and not stabilized
- •patient treated by noradrenaline > 1 µg/kg/min
- •patient or relative's refusal
- •protected patients ≥ 18 years, minors, pregnant women
结局指标
主要结局
The cross-sectional area of the jugular veins ( in cm2)
时间窗: at baseline
The cross-sectional area of the jugular veins ( in cm2) at the end of the intervention
次要结局
- The cross-sectional area of the subclavian veins ( in cm2)(at baseline)
- The antero-posterior diameter of the jugular veins (in mm)(at baseline)
- The antero-posterior diameter of the subclavian veins (in mm)(at baseline)
- The distance between posterior and pleural lining of the jugular veins (in mm)(at baseline)
- The distance between posterior and pleural lining of the subclavian veins (in mm)(at baseline)