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CompletedNCT04330547Updated May 3, 2021

Use of Analgesic Treatment to Reduce Signs of Pain in Patients With Disorders of Consciousness.

A Phase 1 interventional study of Analgesic administration and Placebo administration in Disorders of Consciousness, Severe Brain Injury and Post-comatose Non-communicative Patients, sponsored by University of Liege. Completed at 1 site in Belgium. Open to participants aged 16 Years to 99 Years. Per ClinicalTrials.gov, last updated 2021-05-03.

Sponsored by University of Liege · Phase 1, Interventional, and Supportive care

From the registry’s dates

  • Registered 2 years after the study started (first participant enrolled Feb 2018, registered Mar 2020).
Phase
Phase 1
Study type
Interventional
Enrollment
19
Allocation
Randomized
Ages
16 Years to 99 Years
Sex
All
01

Study summary

The purpose of this study is to characterize and improve pain and nociception management in patients with disorders of consciousness (DOC). This project is divided into two phases, a first phase to evaluate pain level and a second phase which consist of a clinical trial to evalute pain medication efficacy.

The main aim is to evaluate the use of the Nociception Coma Scale-Revised (NCS-R) and its cut-off score (i.e., 5) as an assessment and management tool to define guidelines for managing pain in patients with DOC. In this double-blind, placebo-controlled clinical study, we will evaluate the use of analgesic treatments in reducing pain in subacute/chronic patients. The project will also allow us to validate the NCS-R cut-off score defined previously.

Read the detailed description

The study will be performed within one week (i.e, 7 days) and consists of two phases:

  • Phase 1 "Patients selection (D0)": Patients will be assessed by the NCS-R during experimental stimulation (rest, tactile, noxious) and mobilizations (physiotherapy). Patients with potential pain will be included in the phase 2.
  • Phase 2 "Analgesic administration (D1 and D2)": double-blind placebo-controlled randomized clinical trial on potential responders identified in phase 1. A medical doctor of our team will suggest to the physician in charge to prescribe the dedicated medication. One placebo and one real treatment will be administered on day 1 and 2 by the nurses at least half-hour before the physiotherapy. Randomization between day 1 and 2 will be applied at that time.

For each day of phase 1 and 2, several assessments will be performed: NCS-R, CRS-R and spasticity assessment.

02

Conditions studied

  • Disorders of Consciousness
  • Severe Brain Injury
  • Post-comatose Non-communicative Patients
  • Vegetative State
  • Minimally Conscious State

Keywords

  • Nociception
  • Pain
  • Disorder of Consciousness
  • Nociception coma scale revised
03

In context

Consciousness Disorders

290 studies on the registry are indexed under Consciousness Disorders; 109 are open to participants now.

This study's enrollment of 19 is below the median of 47 across 191 interventional studies indexed under Consciousness Disorders.

Browse Consciousness Disorders studies →

Lead sponsor

University of Liege is the lead sponsor of 251 studies on the registry; 50 are open to participants now.

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

04

Who can participate

Ages eligible
16 Years to 99 Years
Sexes eligible
All
Accepts healthy volunteers
No

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

  • Have had an acquired brain injury with a loss of consciousness > 28 days (patients) or have no history of previous brain injury (healthy controls)
  • Legally authorized surrogate available to provide .
  • Diagnosis of vegetative/unresponsive (VS/UWS) or minimally conscious state (MCS) or emergence of the minimally conscious state without communication (eMCS; as defined by the CRS-R, see above).
  • Medically stable (i.e., no systemic illness or disease).
  • Patients with NCS-R score during mobilization above or equal to the previously determined cut-off score or NCS-R scores during mobilization equivalent to NCS-R score obtain during nociceptive stimulation will be included in the second phase of the study (i.e. D1 and D2).

Exclusion criteria

Exclusion Criteria:

  • History of developmental, neurologic, or major psychiatric disorder resulting in functional disability.
  • or unwillingness to discontinuing sedating and centrally-active drugs (benzodiazepine, long-acting sedating drugs) within 48 hours of assessment.
  • Upper limb contusions, fractures or flaccid paralysis.
  • Uncontrolled epilepsy and already on level 1 drugs
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.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 1
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
19 participants (actual)

Study arms

  • Active comparator
    Analgesic administration

    The analgesic treatment will be tailored to the patient's medication and will be based on 3 levels (based on Ventafridda et al., 1985): * Level 1 : Non-opioid analgesics * Level 2 : Weak opioids analgesics * Level 3 : Strong opioids analgesics If the patient is already on pain medications, we will add the lowest effective dose of the level above the level of the regular pain medications of the patient. (e.g. if the patient has no analgesic treatment, he will be given a non-opioid analgesic (level 1). If he already has a level 1 treatment, we will go for level 2 medication. If he has level 2 treatment, we will go for level 3. And if the patient is already at level 3, we will increase the dosage by steps (reference: 5mg oxycodone as first choice for level 3 drugs)). Preferably, the medication will be administered by oral intake or gastrostomy feeding tube. If it is not possible, other routes of administration are allowed.

    Drug: Analgesic administration

  • Placebo comparator
    Placebo administration

    Folavit capsules will be used as a placebo

    Drug: Placebo administration

Interventions

  • DrugAnalgesic administration

    * Level 1 : Paracétamol 1g/Acetaminophène 1g, Ibuprofène 600mg, Diclofénac 50mg. * Level 2: Tramadol 50mg. * Level 3: Oxycodone 5mg, Morphine sulfate 10mg. * Increase of a prior level 3 medication : 1. 1/6 of the total dose of daily level 3 medication (e.g. the patient receives 30mg of oxycodone a day. He will be administered a single dose of 5 mg for the study), defined as a breakthrough dose in the management of chronic pain. To standardize the treatment, the dose of the prior level 3 medication will be converted to oxycodone. Several online tools exist to do the conversion between opioids (e.g. mobile app Orthodose ®). 2. If the oral intake or the gastrostomy use is not possible, the breakthrough dose will be administered by subcutaneous route. The dose will also be 1/6 of the daily dose and will be converted to injectable morphine. Conversion to injectable morphine will be performed with any equivalence tool (such as the mobile app Orthodose ®)

  • DrugPlacebo administration

    Folavit (folic acid, 0.4 mg)

06

What researchers measure

Primary outcomes

  1. Nociception Coma Scale-Revised (NCS-R)

    The NCS-R (Chatelle et al., 2012) is used to assess the perception of acute pain in patients with disorders of consciousness. It is composed of 3 subscales (motor, verbal and facial expressions) respectively scoring from 0 (no response) to 3 (highest response level). Here the NCS-R is administered in 4 different conditions: at rest, during tactile stimulation, during experimental nociceptive stimulation (pressure on the bed of the left and right nail) and during mobilization (physiotherapy).

    Time frame: through study completion, an average of 2 years

  2. Coma Recovery Scale-Revised (CRS-R)

    The CRS-R (Giacino et al., 2004) is the gold standard for the behavioural assessment of the level of consciousness and is widely used in patients with chronic disorders of consciousness. The CRS-R is composed of six subscales that assess the following domains: visual, motor, auditory and oro-motor/verbal functions, as well as communication, and arousal. The score ranges from 0 to 23, in which the lowest score indicates coma and the highest score indicates the emergence from the minimally conscious state. The diagnosis is made according to the presence\\absence of particular behavioural responses.

    Time frame: through study completion, an average of 2 years

Secondary outcomes

  1. Modified Ashworth Scale (MAS)

    The MAS (Bohannon et al., 1987) is used to assess spasticity (reflex contraction in response to passive stretching). This is a scoring scale from 0 (no increase in muscle tone) to 4 (very strong increase in tone, stiffness), which will depend on the speed of execution of the movement (the faster the limb will be mobilized the more spastic it will be) and which must be performed at least 3 times for each joint.

    Time frame: through study completion, an average of 2 years

07

Study locations

1 site
  • Centre Hospitalier Universitaire de Liège
    Liège, 4000, Belgium
08

References and documents

Publications

  • Ventafridda V, Saita L, Ripamonti C, De Conno F. WHO guidelines for the use of analgesics in cancer pain. Int J Tissue React. 1985;7(1):93-6. PubMed 2409039 ↗
  • Giacino JT, Kalmar K, Whyte J. The JFK Coma Recovery Scale-Revised: measurement characteristics and diagnostic utility. Arch Phys Med Rehabil. 2004 Dec;85(12):2020-9. doi: 10.1016/j.apmr.2004.02.033. PubMed 15605342 ↗
  • Bohannon RW, Larkin PA, Smith MB, Horton MG. Relationship between static muscle strength deficits and spasticity in stroke patients with hemiparesis. Phys Ther. 1987 Jul;67(7):1068-71. doi: 10.1093/ptj/67.7.1068. PubMed 3602099 ↗
  • Chatelle C, Majerus S, Whyte J, Laureys S, Schnakers C. A sensitive scale to assess nociceptive pain in patients with disorders of consciousness. J Neurol Neurosurg Psychiatry. 2012 Dec;83(12):1233-7. doi: 10.1136/jnnp-2012-302987. Epub 2012 Aug 20. PubMed 22906615 ↗
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Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2018 to primary completion in Feb 2019, 11 months.

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

Registered
Mar 9, 2020
First posted
Apr 1, 2020
StartActual
Feb 21, 2018
Primary completionActual
Feb 19, 2019
CompletionActual
Apr 28, 2021
Last update
May 3, 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 3, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04330547
Responsible party
Aurore Thibaut (PhD, University of Liege) — Principal investigator
First posted
Apr 1, 2020
Start date
Feb 21, 2018
Primary completion
Feb 19, 2019
Completion
Apr 28, 2021
Last update
May 3, 2021

Study contacts

Steven Laureys, M.D., P.h.D
study director · Centre du Cerveau, Coma Science Group (GIGA Consciousness)

Oversight

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

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

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