The Effect of Pneumoperitoneum and Trendelenburg Position on Intracranial Pressure: Ultrasonographic Measurement of Optic Nerve Sheath Diameter
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 20
- 试验地点
- 1
- 主要终点
- ultrasonographic measurement of optic nerve sheath diameter
研究概览
简要总结
The steep Trendelenburg position and pneumoperitoneum during laparoscopic surgery have the potential to cause an increase of intracranial pressure (ICP). Previous studies have proposed that ultrasonographic measurements of the optic nerve sheath diameter (ONSD) correlate with signs of increased ICP. Therefore, this study is aim to confirm the increased ICP by ultrasonographic measurement of ONSD during laparoscopic surgery.
研究设计
- 研究类型
- Observational
- 时间视角
- Prospective
入排标准
- 年龄范围
- 20 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adult patients (20-90 years of age) scheduled for undergoing robot-assisted laparoscopic prostatectomy undergoing general anesthesia
排除标准
- •Patients with previous history of neurologic disease, carotid disease, transient ischemic attack, ocular disease and ocular surgery
结局指标
主要结局
ultrasonographic measurement of optic nerve sheath diameter
时间窗: before anesthesia induction, 10 minutes after anesthesia induction, 30 minutes after steep trendelenburg position and pneumoperitoneum, and 10 minutes after supine position, CO2 desufflation.
A thick layer of gel is applied on the upper closed eyelid. The linear 13- to 6-MHz ultrasound probe is then placed in the gel, without exerting pressure on the eye. Two measurements are taken for each optic nerve: one in the transverse plane, with the probe being horizontal, and one in the sagittal plane, with the probe being vertical. The final ONSD is the mean of these measurements.
次要结局
未报告次要终点