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Traumatic Brain InjuryIsoSAFENCT06311604

Evaluation of the Safety of Inhaled Sedation With Isoflurane in Head Trauma Patients

A study testing Isoflurane in people with Traumatic Brain Injury, run by University Hospital, Grenoble at 1 site in France.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

Intensive care management of patient with severe traumatic brain injury (TBI) includes deep and prolonged sedation with intravenous hypnotics (propofol, midazolam, ketamine) in combination with opioids to prevent and/or treat episodes of intracranial hypertension. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Traumatic Brain Injury
What is being tested?
Isoflurane
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
1 siteFrance
Study dates
20 Jun 2024to 20 Mar 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patient > 18 years old
  • Hospitalized in surgical intensive care (CPR and RNC) for severe head trauma
  • On intravenous hypnotic therapy for at least 24 hours with at least 2 lines of IV hypnotics and requiring continued sedation for at least 24 hours, with a RASS of between -3 and -5
  • Initial ICP < 15 mmHg on introduction of isoflurane
  • Functional intracranial pressure sensor
  • Transcranial Doppler measurements performed within 24 hours
  • Written informed consent from a legal representative/relative/trusted person. In the absence of a legal representative, the patient may be included under the emergency procedure.

Who cannot join

  • Patients who have had a decompressive craniectomy
  • Patients with a personal or family history of malignant hyperthermia
  • Patients with a history of long QT syndrome
  • Patients taking MAOI-type antidepressants (iproniazid (MARSILID) and moclobemide (MOCLAMIDE))
  • Patients with known hypersensitivity to isoflurane or other volatile halogenated anaesthetic agents
  • Patients who have experienced liver damage, jaundice, unexplained fever, or eosinophilia after administration of a halogenated anaesthetic.
Show all 11Show fewer
  • Patients expected to die within the next 24 hours
  • Subject in a period of exclusion from another clinical trial,
  • Technical unavailability of the inhaler
  • Persons covered by articles L1121-5 to L1121-8 of the CSP (corresponding to all protected persons: pregnant women, women in childbirth, nursing mothers, persons deprived of their liberty by judicial or administrative decision, persons subject to a legal protection measure).
  • No European social security

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

barthélémy BERTRAND, MD contact

+33 476766879

bbertrand4@chu-grenoble.fr

France1 site, 1 recruiting
  • University Hospital Grenoble

    Grenoble, Choisir Une Région, 38043

    barthélémy H Grenoble, MD, +33476766879, bbertrand4@chu-grenoble.fr

    Anais ADOLLE, +33476766879, aadolle@chu-grenoble.fr

    Recruiting

Other trials in France

About this study

Official title: Evaluation of the Safety of Inhaled Sedation With Isoflurane in Patients With Severe Traumatic Brain Injury

Intensive care management of patient with severe traumatic brain injury (TBI) includes deep and prolonged sedation with intravenous hypnotics (propofol, midazolam, ketamine) in combination with opioids to prevent and/or treat episodes of intracranial hypertension. However, some patients may develop tachyphylaxis with a gradual increase of administered intravenous hypnotics and opioids to maintain the same level of sedation. This situation leads to a failure in controlling intracranial pressure (ICP) and/or to the risk of adverse effects due to high-dose sedatives: haemodynamic instability, prolonged mechanical ventilation, neuromyopathy, delirium, withdrawal syndrome.

Halogenated agents (Isoflurane, Sevoflurane) are a class of hypnotics routinely used in the operating room. However, doses used in surgical patients (> 1 Minimal Alveolar Concentration, MAC) are not suitable in neuro-intensive care unit (ICU) patients at risk of intracranial hypertension because of the cerebral vasodilator effects of halogenated agents at this dosage, hence the risk of high ICP and compromised cerebral perfusion pressure.

Read more

The use of halogenated agents has been recently possible in the ICU through dedicated medical devices (Sedaconda ACD, Mirus). Recommended dosage are lower in the ICU, i.e. 0.3-0.7 MAC, because of their association with intravenous hypnotics and the absence of surgical stimuli. Several clinical studies in general ICUs showed improved sedation quality, reduced duration of mechanical ventilation, faster arousal and shorter extubation time, and lower costs in halogenated group compared with control group receiving midazolam or propofol. At low doses, the effects on ICP and intracerebral haemodynamics of halogenated agents are minor according to the available literature. In addition, beneficial effects were found on cerebral ischaemic volume in animal models treated with halogenated agents. However, there is a need to explore the benefit-risk ratio of the use of halogenated agents in the severe TBI population.

The investigator hypothesise that 0.7 MAC Isoflurane can be administered in this population without deleterious effect on ICP.

Read the detailed description

Intensive care management of patients with severe neurological injury regularly involves deep and prolonged sedation with intravenous hypnotics (propofol, midazolam, ketamine) in combination with morphine, with the aim of preventing and/or treating episodes of intracranial hypertension (ICHT). However, the tachyphylaxis associated with intravenous hypnotics requires a continuous increase in the doses administered to maintain the same level of sedation, or even a combination of several pharmacological classes. This progressive tolerance to hypnotics may result in the failure of the sedation strategy for certain neuro-injured patients and/or expose them to the undesirable effects of high doses of intravenous hypnotics: haemodynamic instability, longer periods of mechanical ventilation, neuromyopathy, mental confusion and withdrawal syndrome.

Inhaled halogens are a class of hypnotics used daily in the operating theatre to maintain anaesthesia. At the doses used in anaesthesia (> 1 MAC - Minimal Alveolar Concentration), they are contraindicated in neuro-injured patients at risk of HTIC because of their cerebral vasodilatory effects, which can lead to an increase in intracranial pressure (ICP) and compromise cerebral perfusion. Halogens (Isoflurane, Sevoflurane) can be used in intensive care with appropriate medical devices (Isoconda, Mirus). They are used at more moderate doses (< 1 MAC) because they are combined with intravenous hypnotics and because there is no surgical stimulus. Several clinical studies in general intensive care have shown improved sedation quality, reduced duration of mechanical ventilation, quicker awakening and shorter time to tracheal extubation, and lower costs in the group treated with a halogenated agent compared with the control group receiving midazolam or propofol. At these low concentrations, the effects on ICP and intracerebral haemodynamics are much less marked, according to the studies published on this subject. In addition, beneficial effects on the volume of cerebral ischaemia have been shown in animal models treated with halogenated agents. However, there is a need for a precise study of the benefit-risk ratio of using halogenated agents in neurological patients.

The Anaesthesia and Intensive Care Unit at the CHUGA has been internationally recognised for many years in the management of sedation-analgesia in intensive care. In connection with this, the experience acquired by the CHUGA's neuro-resuscitation unit in brain monitoring will be used to explore in detail the effects of halogenated agents on intracerebral haemodynamics and intracranial pressure.

the investigator hypothesise that the administration of Isoflurane at 0.7 MAC can be used in this population without deleterious effect on ICP.

Being tested
Isoflurane
Keywords
isoflurane, traumatic brain injury
Medical subject headings
Brain Injuries, Traumatic

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • IsofluraneDrug

    Inclusions will have 4 phases according to gradual increased doses of isoflurane:

    Phase 1: Inclusion of 3 patients with 0.3 MAC isoflurane. In the absence of an increase of ICP > 20% from baseline, inhaled sedation is maintained for 24 hours until the primary endpoint is assessed. If there one patient who does not tolerate this threshold, three additional patients will be included in this phase. A maximum of one treatment failure (see definition below) is tolerated in the phase 1

    Phase 2: Inclusion of 3 additional patients with isoflurane dosage of 0.5 MAC under the same conditions as phase 1.

    Phase 3: Inclusion of 3 additional patients with isoflurane dosage of 0.7 MAC under the same conditions as phases 1 and 2.

    Phase 4: Inclusion of 12-15 additional patients will be included at the 0.7 MAC dose, to have 18 patients exposed to 0.7 MAC isoflurane.

Study groups in NCT06311604
Study groupRoleWhat they receive
ISOFLURANE SEDATIONExperimentalInclusions will have 4 phases according to gradual increased doses of isoflurane (0.3 MAC; 0.5 MAC and 0.7 MAC) Upgrading dose of isoflurane in each phase will be validated by an independent data and safety monitoring committee (DSMC). Inclusion of 12-15 additional patients will be included at the 0.7 MAC dose, to have 18 patients exposed to 0.7 MAC isoflurane.
Receives: Drug: Isoflurane

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. To assess the safety of sedation with 0.7 MAC of inhaled isoflurane in cranial trauma patients in terms of intracranial pressure.

    Composite criterion :

    1. Deaths (attributable to isoflurane) at "H+24 target MAC reached".
    2. 2 consecutive hourly averages of ICP > 20 mmHg during the 24 hours after the target MAC has been reached will be considered as a failure.

    Measured: 36 hours

Secondary outcomes (10)
  1. To assess the effect on cerebral blood flow of inhaled isoflurane sedation in patients with cranial trauma.

    Changes between "before introduction" and "H+24 MAC target reached of transcranial Doppler parameters

    Measured: 36 hours

  2. To assess the effect on cerebral blood flow of inhaled isoflurane sedation in patients with cranial trauma.

    Changes between "before introduction" and "H+24 MAC target reached of Tissue oxygen pressure if applicable

    Measured: 36 hours

  3. To assess the effect on cerebral blood flow of inhaled isoflurane sedation in patients with cranial trauma.

    Changes between "before introduction" and "H+24 MAC target reached" in Cerebral Perfusion Pressure = MAP - ICP

    Measured: 36 hours

  4. To assess the effect on cerebral blood flow of inhaled isoflurane sedation in patients with cranial trauma.

    Changes between "before introduction" and "H+24 MAC target reached" in ICP dose

    Measured: 36 hours

  5. To assess the extra-neurological effects of inhaled isoflurane sedation in head trauma patients

    Changes between "before introduction", "H+24 target MAC reached" in biology parameters

    Measured: 36 hours

  6. To assess the extra-neurological effects of inhaled isoflurane sedation in head trauma patients

    Changes between "before introduction", "H+24 target MAC reached" in Dose of noradrenaline; volume of filling fluids administered

    Measured: 36 hours

  7. To assess the extra-neurological effects of inhaled isoflurane sedation in head trauma patients

    Changes between "before introduction", "H+24 target MAC reached" in DVE: drainage level, drainage volume/24h

    Measured: 36 hours

  8. To assess the savings in intravenous hypnotics associated with isoflurane inhalation sedation in head trauma patients

    Change between "before introduction" and "H+24 MAC target reached" in the dose of intravenous hypnotics consumed

    Measured: 36 hours

  9. To assess the feasibility of inhaled sedation with isoflurane in patients with head trauma

    Rate of non-insertion of isoflurane administration device: cause of withdrawal before "H+24 after target MAC reached".

    Measured: 36 hours

  10. To assess the neurological outcome at D28 after inhaled sedation in head trauma patients

    Neurological outcome at D28 assessed using the Glasgow Outcome Scale (GOSe). 1-4 = poor outcome 4-8 = good outcome

    Measured: 28 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 Mar 2024
  2. Study start20 Jun 2024
  3. Primary completion20 Jun 2026 (estimated)
  4. Study completion20 Mar 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Model description
Prospective, open-label, single-centre, interventional dose escalation study
Masking
None (open label)
Enrolment
30 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06311604
Sponsor's protocol ID
38RC22.0272
Acronym
IsoSAFE
Status last verified
Jun 2024
First submitted
21 Aug 2023
Last updated
3 Jul 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Meiser A, Volk T, Wallenborn J, Guenther U, Becher T, Bracht H, Schwarzkopf K, Knafelj R, Faltlhauser A, Thal SC, Soukup J, Kellner P, Druner M, Vogelsang H, Bellgardt M, Sackey P; Sedaconda study group. Inhaled isoflurane via the anaesthetic conserving device versus propofol for sedation of invasively ventilated patients in intensive care units in Germany and Slovenia: an open-label, phase 3, randomised controlled, non-inferiority trial. Lancet Respir Med. 2021 Nov;9(11):1231-1240. doi: 10.1016/S2213-2600(21)00323-4. Epub 2021 Aug 26.

    PubMed 34454654
  • Bosel J, Purrucker JC, Nowak F, Renzland J, Schiller P, Perez EB, Poli S, Brunn B, Hacke W, Steiner T. Volatile isoflurane sedation in cerebrovascular intensive care patients using AnaConDa((R)): effects on cerebral oxygenation, circulation, and pressure. Intensive Care Med. 2012 Dec;38(12):1955-64. doi: 10.1007/s00134-012-2708-8. Epub 2012 Oct 25.

    PubMed 23096426
  • Villa F, Iacca C, Molinari AF, Giussani C, Aletti G, Pesenti A, Citerio G. Inhalation versus endovenous sedation in subarachnoid hemorrhage patients: effects on regional cerebral blood flow. Crit Care Med. 2012 Oct;40(10):2797-804. doi: 10.1097/CCM.0b013e31825b8bc6.

    PubMed 22824929
  • Codaccioni JL, Velly LJ, Moubarik C, Bruder NJ, Pisano PS, Guillet BA. Sevoflurane preconditioning against focal cerebral ischemia: inhibition of apoptosis in the face of transient improvement of neurological outcome. Anesthesiology. 2009 Jun;110(6):1271-8. doi: 10.1097/ALN.0b013e3181a1fe68.

    PubMed 19417596
  • Aubanel S, Bruiset F, Chapuis C, Chanques G, Payen JF. Therapeutic options for agitation in the intensive care unit. Anaesth Crit Care Pain Med. 2020 Oct;39(5):639-646. doi: 10.1016/j.accpm.2020.01.009. Epub 2020 Aug 7.

    PubMed 32777434

Questions about this trial

What is this clinical trial studying?

A study testing Isoflurane in people with Traumatic Brain Injury, run by University Hospital, Grenoble at 1 site in France.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 3 Jul 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact barthélémy BERTRAND, MD (+33 476766879, bbertrand4@chu-grenoble.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

To assess the safety of sedation with 0.7 MAC of inhaled isoflurane in cranial trauma patients in terms of intracranial pressure. (time frame: 36 hours). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06311604, which also lists 5 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Jul 2024.

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