Relationship Between Induction Burst Suppression and Bispectral Index

Condition(s) studied

Study summary

The purpose of this study is to understand whether certain brain activity patterns that can appear at the beginning of anesthesia are related to how deep anesthesia remains during the operation.

The main question of the study is:

Do patients who show a pattern called burst suppression during the start of anesthesia experience deeper anesthesia during surgery?

Patients who are scheduled for elective surgery under total intravenous anesthesia (TIVA) may take part in this study. During the operation, brain activity will be monitored using a sensor placed on the forehead (Bispectral Index, BIS monitor), which is already commonly used during anesthesia. Information such as BIS values and the doses of anesthesia medications given during the operation will be recorded.

Participation in this study will not change the type of anesthesia or the routine care that patients receive during surgery. The study only involves recording and analyzing information collected during standard anesthesia monitoring.

Eligibility

Primary outcome measure(s)

• TBIS<40 — During intraoperative period
  Total duration during the maintenance phase of anesthesia in which the BIS remains below 40, expressed as a proportion of total surgical time, compared between patients with and without burst suppression during induction

Trial sites (2)

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