ClinicalTrials.gg
TerminatedNCT03486288CONFESSUpdated May 27, 2021

Cognitive Impairment Following Elective Spine Surgery

An observational study in Cognitive Impairment, Postoperative Delirium and Spine Fusion, sponsored by University Medicine Greifswald. Terminated at 1 site in Germany. Open to participants aged 60 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-05-27.

Sponsored by University Medicine Greifswald · Observational

Why this study was terminated
Recruitment delayed because of Sars-CoV-2 pandemic, elective surgery stopped, funding for undefinite extension not available

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Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
124
Ages
60 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 102 studies in Cognitive Dysfunction with a site in Germany — 20 open to participants now, 27 under way, 5 of them phase 3. Cognitive Dysfunction · Germany.

Enrollment
14th of 27
124 · median 124
Started
2018
with 8 others
Observational
27 of 102
7 open now
Registered
49th of 102
by date
Lead sponsor
4 of 102
University Medicine Greifswald

Among the 102 studies in Cognitive Dysfunction with a site in Germany, this one is the 14th largest by enrollment of the 27 observational ones that give a count, is one of 9 that started in 2018, is one of 27 observational ones, and was the 49th registered.

Cognitive Dysfunction

3,875 studies on the registry are indexed under Cognitive Dysfunction; 1,121 are open to participants now.

Browse Cognitive Dysfunction studies →

Open to participants now

20 of the 102 studies in Cognitive Dysfunction with a site in Germany are open now. Recruiting first, the newest first:

15 more — sign in →

All 20 open studies →

A study can be open while its sites in Germany have not opened yet or have stopped. Only those recruiting at a site in Germany →

Who these studies take

Of the 751 Cognitive Dysfunction studies recruiting now, 363 (48%) set no upper age limit and 143 (19%) stop at 75 or younger; 46 take children under 18; 259 take healthy volunteers.

This study: 60 Years and older · all sexes · healthy volunteers too.

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02

Study summary

Older people are a rapidly growing proportion of the world's population and their number is expected to increase twofold by 2050. When these people become patients that require surgery, they are at particular high risk for postoperative delirium (POD), which is associated with longer hospital stays, higher costs, risk for delayed complications and cognitive dysfunction (POCD). Having suffered an episode of delirium is furthermore a predictor of long-term care dependency. Despite these risks, an increasing number of elderly undergo major elective surgery. This is reflected by the frequency of elective spinal surgery, in general, and instrumented fusions, in particular, which has markedly increased over the past few decades.

It is yet insufficiently understood, which, particularly modifiable, factors contribute to the development of POD and POCD following these major but plannable surgeries. A better understanding of risk factors would facilitate informed patient decisions and surgical strategies could be tailored to individual risk profiles.

03

Conditions studied

  • Cognitive Impairment
  • Postoperative Delirium
  • Spine Fusion

Keywords

  • delirium
  • postoperative cognitive dysfunction
  • spine surgery
  • elderly
  • neuroinflammation
  • magnetic resonance imaging
  • resting state fmri
  • cerebral vasculature
  • quality of life
04

Who can participate

Ages eligible
60 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Probability sample

Study population

All patients seen in a neurosurgical oupatient clinic will be screened for eligibility.

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 ≥ 60 years
  • scheduled for elective spine surgery without opening the dura
  • patient can give him-/herself
  • German native speaker

Exclusion criteria

Exclusion Criteria:

  • dementia or neurodegenerative disease
  • psychiatric disease
  • prescription of CNS-active medication (e.g. antidepressants, antipsychotics, sedatives, alpha-1-antagonists)
  • impossible to participate in follow-up
  • participation in an interventional trial
  • electronic or displacable metallic implants
  • active neoplasm
Terms in these criteria, in plain language(1)

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.

05

Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
124 participants (actual)
Patient registry
No

Groups and cohorts

  • Delirium
  • No Delirium
06

What researchers measure

Primary outcomes

  1. postoperative delirium - incidence

    screening through Nu-DESC (Nursing Delirium Screening Scale) ≥ 2 and verification of screening procedure by DSM-V (Diagnostic and Statistical Manual of Mental Disorders 5th Edition) criteria once during each shift

    Time frame: ≤ 3 days postoperatively

Secondary outcomes

  1. postoperative delirium - duration

    screening through Nu-DESC ≥ 2 and verification of screening procedure by DSM-V criteria DSM-V once during each shift

    Time frame: ≤ 3 days postoperatively or until delirium resolves

  2. postoperative delirium - severity

    rated through CAM-S (Confusion Assessment Method - Severity) if patient was identified to be delirious

    Time frame: ≤ 3 days postoperatively or until delirium resolves

  3. postoperative cognitive dysfunction - severity

    CERAD-Plus (Consortium to Establish a Registry for Alzheimer's Disease - Plus)

    Time frame: baseline and 3 months postoperatively

  4. pre- and postoperative intelligence

    MWT-B (Mehrfachwahl-Wortschatz-Intelligenztest - B)

    Time frame: baseline and 3 months postoperatively

  5. Markers of systemic inflammation

    C-reactive protein, Interleukins, Tumor necrosis factor among others

    Time frame: ≤ 2 days postoperatively

  6. Markers of neuroinflammation

    Glial fibrillary acidic protein among others

    Time frame: ≤ 2 days postoperatively

  7. Markers of oxidative and metabolic stress

    Malondialdehyd

    Time frame: ≤ 2 days postoperatively

  8. Patient Reported Quality of life

    PROMIS-29 (Patient-Reported Outcomes Measurement Information System- Profile 29 incl. proxy-rating)

    Time frame: baseline and 3 months postoperatively

  9. Patient Reported Quality of life - 2

    SF-36 (Short Form 36)

    Time frame: baseline and 3 months postoperatively

  10. Anxiety and depression

    HADS (Hospital Anxiety and Depression Scale)

    Time frame: baseline and 3 months postoperatively

  11. Frailty

    Groningen Frailty Scale

    Time frame: baseline and 3 months postoperatively

  12. Structural magnetic resonance imaging

    White matter lesions

    Time frame: baseline and 3 months postoperatively

  13. Functional magnetic resonance imaging

    Resting state networks

    Time frame: baseline and 3 months postoperatively

  14. Cerebral vasculature

    Ultrasound of extra- and intracranial cerebral arteries

    Time frame: baseline

  15. Genetic polymorphisms

    Time frame: baseline

07

Study locations

1 site
  • Department of Neurology
    Greifswald, Mecklenburg-Vorpommern 17475, Germany
08

References and documents

Publications

  • Muller J, Nowak S, Vogelgesang A, von Sarnowski B, Rathmann E, Schmidt S, Rehberg S, Usichenko T, Kertscho H, Hahnenkamp K, Floel A, Schroeder HW, Muller JU, Fleischmann R. Evaluating Mechanisms of Postoperative Delirium and Cognitive Dysfunction Following Elective Spine Surgery in Elderly Patients (CONFESS): Protocol for a Prospective Observational Trial. JMIR Res Protoc. 2020 Feb 13;9(2):e15488. doi: 10.2196/15488. Erratum In: JMIR Res Protoc. 2020 Feb 28;9(2):e18469. doi: 10.2196/18469. PubMed 32053113 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2018 to primary completion in Mar 2020, 25 months.

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

Registered
Mar 1, 2018
First posted
Apr 3, 2018
StartActual
Feb 6, 2018
Primary completionActual
Mar 31, 2020
CompletionActual
Mar 30, 2021
Last update
May 27, 2021
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 May 27, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03486288
Responsible party
Sponsor
First posted
Apr 3, 2018
Start date
Feb 6, 2018
Primary completion
Mar 31, 2020
Completion
Mar 30, 2021
Last update
May 27, 2021

Study contacts

Robert Fleischmann, MD
principal investigator · Department of Neurology
Jonas Müller, MD
principal investigator · Department of Neurosurgery

Oversight

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

Not currently enrolling

This study is terminated, as verified in May 2021. You cannot join it, but the record below documents what was studied.

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