ClinicalTrials.gg
Not yet recruitingNCT07760415Updated Aug 12, 2026

EEG Changes and Cognitive Profiles in Sepsis Patients With Different Inflammatory Phenotypes

An observational study in Sepsis, Sepsis Associated Encephalopathy and Sepsis and Septic Shock, sponsored by Xiangya Hospital of Central South University. Not yet recruiting at 1 site in China. Open to participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2026-08-12.

Primary conditionShock, SepticRegistry: SepsisReclassifiedWhy we changed it
Registry
Sepsis — the first condition term the registry derived for this study.
ClinicalTrials.gg
Shock, Septic
Why
  1. The study's listed conditions name Shock, Septic, a narrower term within Sepsis.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Xiangya Hospital of Central South University · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
78
Ages
18 Years to 90 Years
Sex
All
01

Study summary

To characterize the electroencephalogram (EEG) features of sepsis patients with distinct inflammatory response phenotypes, dynamically track their evolutionary trajectories, and analyze their associations with long-term changes in cognitive function.

02

Conditions studied

  • Sepsis
  • Sepsis Associated Encephalopathy
  • Sepsis and Septic Shock
  • Sepsis at Intensive Care Unit

Browse trials for

Keywords

  • Sepsis
  • Sepsis-Associated Encephalopathy
  • Electroencephalogram
  • Inflammatory Phenotype
  • Cognitive Dysfunction
03

In context

Shock, Septic Reclassified

1,078 studies on the registry are indexed under Shock, Septic; 232 are open to participants now.

This study's planned enrollment of 78 is below the median of 108 across 406 observational studies indexed under Shock, Septic.

Browse Shock, Septic studies →

Lead sponsor

Xiangya Hospital of Central South University is the lead sponsor of 174 studies on the registry; 77 are open to participants now.

Compared within Shock, Septic, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Sepsis. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Adult sepsis patients admitted to ICU at Xiangya Hospital, diagnosed according to Sepsis-3.0 criteria, with expected survival ≥24 hours. Patients with primary CNS diseases, post-CPCR status, pregnancy/lactation, or contraindications to EEG monitoring will be excluded.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age ≥18 years and ≤90 years
  • First-time admission to the Intensive Care Unit (ICU)
  • Diagnosis of sepsis according to Sepsis-3.0 criteria (documented or clinically suspected infection plus Sequential Organ Failure Assessment [SOFA] score ≥2 points)
  • Expected ICU survival time ≥24 hours
  • Written provided by the patient or legal surrogate

Exclusion criteria

Exclusion Criteria:

  • Pregnancy or lactation
  • Cardiopulmonary-cerebral resuscitation (CPCR) performed during the current hospital admission
  • Pre-existing primary central nervous system (CNS) diseases, including:

Acute cerebrovascular disease (e.g., hemiplegia, cranial nerve palsy) Central nervous system infection (e.g., pleocytosis in cerebrospinal fluid) Organic or metabolic encephalopathy (e.g., hepatic, renal, pulmonary, pancreatic, or severe inherited metabolic disorders) Drug-related encephalopathy (e.g., antipsychotic-associated encephalopathy, serotonin syndrome, neurotoxic antibiotics) Other structural or immunological brain diseases (e.g., traumatic brain injury, intracranial neoplasm, encephalopathy)

- Inability to cooperate with or tolerate scalp EEG electrode placement (e.g., extensive scalp trauma or open scalp infection)

Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
78 participants (estimated)
Patient registry
No

Groups and cohorts

  • High Inflammatory Phenotype Group

    Septic patients displaying serum Interleukin-6 (IL-6) ≥ 400 pg/mL upon ICU admission (Day 1) .

    Device: EEG monitoring

  • Low Inflammatory Phenotype Group

    Septic patients displaying serum Interleukin-6 (IL-6) \< 400 pg/mL upon ICU admission (Day 1) .

    Device: EEG monitoring

Interventions

  • DeviceEEG monitoring

    Standard sepsis bundle treatment + 72-hour quantitative continuous EEG monitoring + structured long-term cognitive follow-up.

06

What researchers measure

Primary outcomes

  1. Quantified EEG Features and Young Classification Grade

    Description: Power spectral density (delta, theta, alpha, beta frequency bands), relative delta band power ratio (1-4 Hz), epileptiform discharge frequency, burst-suppression ratio, and Young EEG grading (Grade I to VI, double-blinded expert consensus reading).

    Time frame: 72 hours after enrollment

  2. Favorable Neurological Prognosis Rate (CPC Score)

    Neurological outcome assessed using the Cerebral Performance Category (CPC) scale. The CPC score ranges from 1 to 5, with lower scores indicating better neurological function. CPC scores of 1-2 indicate favorable neurological outcomes, whereas CPC scores of 3-5 indicate unfavorable neurological outcomes.

    Time frame: Baseline (Day 1), Day 2, Day 3, Day 7, Day 30, Day 90, and Day 180 post-enrollment.

Secondary outcomes

  1. Montreal Cognitive Assessment (MoCA) Score

    Cognitive function assessed using the Montreal Cognitive Assessment (MoCA) scale. The total MoCA score ranges from 0 to 30, with higher scores indicating better cognitive function. A MoCA score \<26 is defined as cognitive impairment.

    Time frame: Baseline (Day 1), Day 2, Day 3, Day 7, Day 30, Day 90, and Day 180 post-enrollment.

  2. Mortality

    All-cause mortality collected through electronic medical records and structured telephone follow-up.

    Time frame: Day 30, Day 90, and Day 180 post-enrollment.

  3. Length of ICU Stay

    Total duration of stay in the Intensive Care Unit in days.

    Time frame: Up to 180 days post-enrollment.

  4. Health-Related Quality of Life (EQ-5D-5L Index)

    Health-related quality of life assessed using the EuroQol 5-Dimension 5-Level (EQ-5D-5L) Index. The EQ-5D-5L index score ranges from -0.594 to 1.000, with higher scores indicating better health-related quality of life.

    Time frame: Day 30, Day 90, and Day 180 post-enrollment.

07

Study locations

1 site
08

References and documents

Publications

  • Bitar R, Khan UM, Rosenthal ES. Utility and rationale for continuous EEG monitoring: a primer for the general intensivist. Crit Care. 2024 Jul 16;28(1):244. doi: 10.1186/s13054-024-04986-0. PubMed 39014421 ↗
  • Shankar-Hari M, Benghanem S, Bourhy L, Cunningham C, Ehler J, Girard TD, Gofton TE, Hermann B, Jiwaji Z, Mazeraud A, Needham E, Rosa RG, Singer M, Slooter AJC, Sonneville R, Stevens RD, Taccone FS, Sharshar T. Current knowledge and challenges of sepsis-associated encephalopathy. Intensive Care Med. 2026 Jun 16. doi: 10.1007/s00134-026-08489-0. Online ahead of print. PubMed 42301312 ↗
  • Young GB, Bolton CF, Archibald YM, Austin TW, Wells GA. The electroencephalogram in sepsis-associated encephalopathy. J Clin Neurophysiol. 1992 Jan;9(1):145-52. doi: 10.1097/00004691-199201000-00016. PubMed 1552002 ↗
  • Oddo M, Carrera E, Claassen J, Mayer SA, Hirsch LJ. Continuous electroencephalography in the medical intensive care unit. Crit Care Med. 2009 Jun;37(6):2051-6. doi: 10.1097/CCM.0b013e3181a00604. PubMed 19384197 ↗
  • Faix JD. Biomarkers of sepsis. Crit Rev Clin Lab Sci. 2013 Jan-Feb;50(1):23-36. doi: 10.3109/10408363.2013.764490. PubMed 23480440 ↗
  • Gofton TE, Young GB. Sepsis-associated encephalopathy. Nat Rev Neurol. 2012 Oct;8(10):557-66. doi: 10.1038/nrneurol.2012.183. Epub 2012 Sep 18. PubMed 22986430 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Aug 2026; primary completion for Dec 2026, 4 months later.

Of 189 non-industry observational studies under Shock, Septic, half reached primary completion within 25 months of starting (the median), counting those still running; a quarter within 13 and three quarters within 47. This study's planned 4 months is below that.

Counting every sponsor, half of 202 studies reached it within 25 months; a quarter within 12 and three quarters within 47.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 27, 2026
First posted
Aug 12, 2026
StartEst.
Aug 1, 2026
Primary completionEst.
Dec 12, 2026
CompletionEst.
May 1, 2027
Last update
Aug 12, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 12, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07760415
Responsible party
Lina Zhang, MD, PhD (Professor and Chief of the Department of Critical Care Medicine, Xiangya Hospital of Central South University) — Principal investigator
First posted
Aug 12, 2026
Start date
Aug 1, 2026 (estimated)
Primary completion
Dec 12, 2026 (estimated)
Completion
May 1, 2027 (estimated)
Last update
Aug 12, 2026

Study contacts

Lina Zhang, Dr.
Contact
zln7095@163.com
86+15874875763

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.

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