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CompletedNCT02433041PRIDeUpdated Jan 23, 2019

Baden Prevention and Reduction of Incidence of Postoperative Delirium Trial

A Phase 4 interventional study of Haloperidol and Ketamine in Postoperative Delirium, sponsored by University Hospital, Basel, Switzerland. Completed at 1 site in Switzerland. Open to participants aged 65 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-01-23.

Sponsored by University Hospital, Basel, Switzerland · Phase 4, Interventional, and Prevention

Phase
Phase 4
Study type
Interventional
Enrollment
200
Allocation
Randomized
Ages
65 Years and older
Sex
All
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Study summary

The purpose of this study is to find out whether postoperative delirium can be more properly prevented by the combination of determined preventive agents in past studies. Further on the investigators measure pre- and postoperative cortisol, neuron specific enolase (NSE) and S-100beta levels.

Read the detailed description

The postoperative delirium remains a challenge for medical stuff concerning detection, therapy and avoidance of consequences. Over the years numerous risk factors were detected which emphasizes the importance of its prevention. Within these studies some possibilities, but no strictly defined rules of action for pharmacological or neuropsychological prevention are described. This is why in this randomized, double-blinded, placebo-controlled study, the investigators want to compare two agents that were found to prevent postoperative delirium to a certain level, even in combination: the investigators arrange the patients within four study groups, one receiving Haloperidol, one Ketamine, one both and one placebo. The patients receive the study drug only once right before induction of anesthesia. After the day of recruitment there is the day of operation and a follow-up of three days (5 days of observation in total, where the investigators will test cognitive function with Mini Mental Status Examination (MMSE), Delirium Observation Scale (DOS), Nursing Delirium Screening Scale (Nu-DESC) or Intensive Care Delirium Screening Checklist (ICDSC). Additionally the investigators will measure and compare pre- and postoperative Cortisol, NSE and S-100beta levels.

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Conditions studied

  • Postoperative Delirium

Keywords

  • Postoperative delirium
  • Cortisol
  • NSE
  • S-100beta
  • MMSE
  • Nu-DESC
  • ICDSC
  • DOS
  • Haloperidol
  • Ketamine
  • Combination of Haloperidol and Ketamine
  • Placebo
  • Prevention of
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In context

Delirium

1,057 studies on the registry are indexed under Delirium; 238 are open to participants now.

This study's enrollment of 200 is above the median of 120 across 599 interventional studies indexed under Delirium.

Browse Delirium studies →

Lead sponsor

University Hospital, Basel, Switzerland is the lead sponsor of 968 studies on the registry; 191 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
65 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Age 65 years and older
  • Signed agreement

Exclusion criteria

Exclusion Criteria:

  • Delirium at admittance or MMSE score \<24 points
  • High risk for postoperative ICU treatment
  • Haloperidol or Ketamine intolerance
  • Risk of lack of cooperation
  • Drug an alcohol abuse
  • Dementia
  • QT interval (QTc) prolongation (at least 460ms in men, at least 470ms women) or drugs influencing QT interval, such as class Ia and III antiarrhythmics, Gatifloxacin, Moxifloxacin, Pentamidin, Cotrimoxazol, Tacrolimus, Dolasetron
  • Parkinson's disease
  • Intake of dopaminergic drugs (Levodopa, dopamine agonists)
  • Parkinsonism
  • Epilepsy
  • Unable to be interviewed (severe Dementia, speaking disorders, intubation, respiratory isolation, aphasia, coma, terminal illness)
  • Delay of operation of more than 72 hours past hospital admittance
  • Body weight >100kg
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Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Single group
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
200 participants (actual)

Study arms

  • Active comparator
    Haloperidol

    Haloperidol 0.005mg/kg at induction of anesthesia

    Drug: Haloperidol

  • Active comparator
    Ketamine

    Ketamine 1mg/kg at induction of anesthesia

    Drug: Ketamine

  • Active comparator
    Haloperidol + Ketamine

    Combination of Haloperidol + Ketamine in same dosage at induction of anesthesia

    Drug: Haloperidol + Ketamine

  • Placebo comparator
    Saline solution (NaCl 0.9%)

    Placebo

    Drug: Saline solution (NaCl 0.9%)

Interventions

  • DrugHaloperidol

    Haloperidol 0.005mg/kg at induction of anesthesia

  • DrugKetamine

    Ketamine 1mg/kg at induction of anesthesia to test its power to prevent postoperative delirium

  • DrugHaloperidol + Ketamine

    Haloperidol 0.005mg/kg + Ketamine 1mg/kg at induction of anesthesia to test their power to prevent postoperative delirium if given together

  • DrugSaline solution (NaCl 0.9%)

    Placebo being used in one of the four groups

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What researchers measure

Primary outcomes

  1. Differences among study groups - Significant drop in MMSE of two points in one of the three postoperative follow-up days

    Significant drop in MMSE of two points in one of the three postoperative follow-up days (ICU patients excluded)

    Time frame: 5 day follow-up (preoperative, day of surgery, postoperative days 1-3)

Secondary outcomes

  1. Quantification of incidence of postoperative delirium based on cognitive testing and lab parameters

    Drop of one point in Nursing Delirium Screening Scale (Nu-DESC) compared pre- and postoperatively, comparison of levels of NSE, S-100beta and Cortisol (significantly elevated postoperatively?)

    Time frame: 5 day follow-up (preoperative, day of surgery, postoperative days 1-3)

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Study locations

1 site
  • University Hospital Basel
    Basel, 4031, Switzerland
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References and documents

Publications

  • Hollinger A, Rust CA, Riegger H, Gysi B, Tran F, Brugger J, Huber J, Toft K, Surbeck M, Schmid HR, Rentsch K, Steiner L, Siegemund M. Ketamine vs. haloperidol for prevention of cognitive dysfunction and postoperative delirium: A phase IV multicentre randomised placebo-controlled double-blind clinical trial. J Clin Anesth. 2021 Feb;68:110099. doi: 10.1016/j.jclinane.2020.110099. Epub 2020 Oct 22. PubMed 33120302 ↗
  • Riegger H, Hollinger A, Seifert B, Toft K, Blum A, Zehnder T, Siegemund M. Baden Prevention and Reduction of Incidence of Postoperative Delirium Trial (PRIDe): a phase IV multicenter, randomized, placebo-controlled, double-blind clinical trial of ketamine versus haloperidol for prevention of postoperative delirium. Trials. 2018 Feb 26;19(1):142. doi: 10.1186/s13063-018-2498-6. PubMed 29482596 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 23, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT02433041
Lead sponsor
University Hospital, Basel, Switzerland
Collaborators
Kantonsspital Baden
Responsible party
Sponsor
First posted
May 4, 2015
Start date
Jul 2013
Primary completion
Dec 21, 2018
Completion
Dec 21, 2018
Last update
Jan 23, 2019

Study contacts

Alexa Hollinger, MD
study director · University Hospital, Basel, Switzerland

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2019. You cannot join it, but the record below documents what was studied.

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