Which Bispectral Index Score is Reliable Throughout Esophageal Cancer Operation?
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Samsung Medical Center
- Enrollment
- 44
- Locations
- 2
- Primary Endpoint
- Change in Bispectral index score
Study Overview
Brief Summary
The investigators try to conduct a study to assess the impact of changing patients' lateral decubitus position on BIS readings during esophageal cancer operation. Also, the investigators evaluate the effects of one-lung ventilation and total lung ventilation on BIS value with inhalation agent.
Detailed Description
Bispectral index (BIS) was developed to monitor a patient's level of consciousness under general anesthesia. Several factors have been found to alter BIS readings without affecting the depth of anesthesia.Changing a patient's position (head up and head down) significantly affects the BIS values, which might affect the interpretation of anesthetic depth.
During esophageal cancer surgery, there were several factors which could affect to BIS values.First, the surgical positions are consisted with supine and lateral decubitus position more than 1 h. Thus, the investigators compare the BIS value of both side on supine and lateral decubitus position by both side approach. Second, the one lung ventilation was applied for surgical filed. It alters the oxygenation and the cerebral flow. Because of these effects, the BIS monitoring can differ by the period of surgery. Thus, in this study, the BIS value of both side monitor throughout the surgery.
Study Design
- Study Type
- Interventional
- Allocation
- Na
- Intervention Model
- Single Group
- Primary Purpose
- Other
- Masking
- None
Eligibility Criteria
- Ages
- 20 Years to 80 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •the patients who are planned the esophageal cancer operation
Exclusion Criteria
- •patient who has dermatitis
- •patient who refuse to participate in this study
Arms & Interventions
BIS group
Patients who received the esophageal surgery
Intervention: BIS (Device)
Outcomes
Primary Outcomes
Change in Bispectral index score
Time Frame: after lateral decubitus position 5 mins, 10 mins, 20 mins, 30 mins
The difference of both side BIS value on lateral decubitus position
Secondary Outcomes
- oxygenation and BIS(intraoperative)
- the asymmetry of BIS(after supine position 5 mins, 10 mins, 20 mins, 30 mins)
- The changes of BIS(intraoperative)