Examining the link between sleep EEG and cognitive issues after surgery

Relationship Between Sleep EEG, Intraoperative EEG and Postoperative Cognitive Dysfunction

Observational Assistance Publique - Hôpitaux de Paris · NCT04481347

This study is trying to see if monitoring brain activity during surgery can help understand why some patients have memory and thinking problems afterward.

Quick facts

Study typeObservational
Enrollment100 (estimated)
Ages18 Years and up
SexAll
SponsorAssistance Publique - Hôpitaux de Paris Academic / other
Locations1 site (Paris)
Trial IDNCT04481347 on ClinicalTrials.gov

What this trial studies

This observational study investigates the relationship between sleep EEG patterns, intraoperative EEG readings, and the occurrence of postoperative cognitive dysfunction (POCD) in patients undergoing surgery. It aims to utilize quantitative EEG techniques to monitor brain activity during anesthesia, potentially allowing for better management of anesthetic dosages. By assessing preoperative cognitive status and EEG characteristics, the study seeks to identify factors that may contribute to cognitive decline following surgery, thereby improving patient outcomes.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older who are scheduled for surgery under general anesthesia.

Not a fit: Patients with severe pre-existing cognitive impairment or those undergoing emergency procedures may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved monitoring techniques that reduce the risk of cognitive dysfunction after surgery.

How similar studies have performed: Previous studies have shown promising results in using EEG monitoring to mitigate cognitive dysfunction, suggesting that this approach may be effective.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Major patients (≥ 18 years )
* Eligible for an interventional radiology procedure or surgery under general anesthesia
* Patients informed and having expressed their non-opposition to participation in this research

Exclusion Criteria:

* Patients under 18 years old
* Severe pre-existing cognitive impairment (preoperative mini-mental state examination (MMSE) \< 24)
* Patient opposed to protocol participation
* Pregnant woman
* Patient under judicial protection
* Patient without affiliation to a social security scheme
* Emergency procedure

Where this trial is running

Paris

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Postoperative Cognitive Dysfunctionpostoperative cognitive dysfunctiondepth of anesthesiabrain fragilityelectrographic suppression
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.