Brain TumorsNCT02537106
A Comparison of the Effect of 1.5 Versus 3% NaCl on Brain Relaxation and Microcirculation
A study testing 1.5% NaCl and 3% NaCl in people with Brain Tumors, run by University Hospital Hradec Kralove at 1 site in Czechia.
Trial summary
Hyperosmotic solutions of 1.5% and 3% NaCl are equally effective for brain relaxation and microcirculation during brain surgery. The effect of 1.5% NaCl on postoperative natremia and natriuresis is less pronounced. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Brain Tumors
- What is being tested?
- 1.5% NaCl and 3% NaCl
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 100 participants
- Where
- 1 siteCzechia
- Study dates
- Sep 2015to May 2019
- Phase
- Interventional
- Are there results?
- None posted in the registry
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
- peripheral supratentorial brain tumors or metastasis
- indication for osmotherapy
- ASA status I-III
Who cannot join
- reoperation
- osmotherapy prior to surgery
- preoperative natremia less than 135 mmol/l and more than 140 mmol/l
- GCS less than 14
- obstructive hydrocephalus
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Comparison of the Effect of 1.5% Versus 3% NaCl on Brain Relaxation and Microcirculation During the Supratentorial Brain Tumor Surgery, and Natremia and Osmolarity in Postoperative Period
Hyperosmotic solutions of 1.5% and 3% NaCl are equally effective for brain relaxation and microcirculation during brain surgery. The effect of 1.5% NaCl on postoperative natremia and natriuresis is less pronounced.
Read the detailed description
All the patients meeting the study criteria will be randomized into two groups. After standardized induction to general anesthesia all patients will be given the infusion of hyperosmotic NaCl 5 ml/kg/BW during 30 min, group A 1.5% NaCl, group B 3% NaCl. Corticosteroids will be administered as usually. After dura opening the brain relaxation score will be assessed by surgeon (1 = completely relaxed, 2 = satisfactorily relaxed, 3 = firm brain, 4 = bulging brain), and the first measurement of the brain microcirculation provided by use of SDF probe in the area of the healthy brain, and of perifocal oedema. Both sites of investigation will be marked for the second measurement, which will be done after the end of tumor resection. Laboratory examinations: natremia preoperatively, natremia and osmolarity peroperatively 1 hour after NaCl infusion and at the end of surgery. Concentration of natrium will be examined in CSF after dura opening. Anesthesia management will be according to the standardised protocol, the patients will be awaken and extubated after the end of the procedure at the operating theatre.
- Conditions
- Brain Tumors
- Being tested
- 1.5% NaCl, 3% NaCl
- Keywords
- Brain Tumors, Microcirculation, Osmotherapy, Hypertonic NaCl, Natremia
- Medical subject headings
- Brain Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
1.5% NaClProcedure or surgery
After the infusion of 1.5% NaCl and dura opening the microcirculation and the brain relaxation score will be measured in the area of healthy brain and perifocal oedema sites. Microcirculation measurement will be repeated at the same sites after tumor resection.
3% NaClProcedure or surgery
After the infusion of 3% NaCl and dura opening the microcirculation and the brain relaxation score will be measured in the area of healthy brain and perifocal oedema sites. Microcirculation measurement will be repeated at the same sites after tumor resection.
| Study group | Role | What they receive |
|---|---|---|
| 1.5% NaCl | Experimental | After standardized induction to general anesthesia group A patients will be given the infusion of hyperosmotic 1.5% NaCl 5 ml/kg/BW during 15 min. Receives: Procedure: 1.5% NaCl |
| 3% NaCl | Experimental | After standardized induction to general anesthesia group B patients will be given the infusion of hyperosmotic 3% NaCl 5 ml/kg/BW during 15 min. Receives: Procedure: 3% NaCl |
What is being measured
The primary outcome is the main question the study is designed to answer.
Changes in brain microcirculation
measurement by SDF probe MicroVision
Measured: from dura opening till the end of tumor resection
Secondary outcomes (5)
Changes in natremia
mmol/l
Measured: 1 hour after hypertonic NaCl infusion
Changes in natremia
mmol/l
Measured: 5 min after the end of surgery
Changes in osmolarity
mosm/l
Measured: 1 hour after hypertonic NaCl infusion
Changes in osmolarity
mosm/l
Measured: 5 min after the end of surgery
Concentration of natrium in cerebrospinal fluid
mmol/l
Measured: after dura opening
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Sep 2015 (estimated)
- Study startSep 2015
- Primary completionMar 2019
- Study completionMay 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Brain TumorsStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 100 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Hospital Hradec Kralove
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Dostalova Vlasta, MD, PhD, University Hospital Hradec Kralove
- Investigators
- Vlasta Dostalova, MD., Principal investigator, University Hospital Hradec Kralove
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02537106
- Sponsor's protocol ID
- 201508-S23P
- Status last verified
- Sep 2019
- First submitted
- 27 Aug 2015
- Last updated
- 1 Oct 2019
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 1 Oct 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Comparison of the Effect of 1.5% Versus 3% NaCl on Brain Relaxation and Microcirculation During the Supratentorial Brain Tumor Surgery, and Natremia and Osmolarity in Postoperative Period
- ClinicalTrials.gov ID
- NCT02537106
- Acronym / sponsor ID
- 201508-S23P
- Conditions
- Brain Tumors
- Keywords
- Brain Tumors, Microcirculation, Osmotherapy, Hypertonic NaCl, Natremia
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 100 participants (actual)
- Lead sponsor
- University Hospital Hradec KraloveUniversity, hospital or other
- Study start
- Sep 2015
- Primary completion
- Mar 2019 (actual)
- Study completion
- May 2019 (actual)
- First posted
- 1 Sep 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Hyperosmotic solutions of 1.5% and 3% NaCl are equally effective for brain relaxation and microcirculation during brain surgery. The effect of 1.5% NaCl on postoperative natremia and natriuresis is less pronounced.
Detailed description
All the patients meeting the study criteria will be randomized into two groups. After standardized induction to general anesthesia all patients will be given the infusion of hyperosmotic NaCl 5 ml/kg/BW during 30 min, group A 1.5% NaCl, group B 3% NaCl. Corticosteroids will be administered as usually. After dura opening the brain relaxation score will be assessed by surgeon (1 = completely relaxed, 2 = satisfactorily relaxed, 3 = firm brain, 4 = bulging brain), and the first measurement of the brain microcirculation provided by use of SDF probe in the area of the healthy brain, and of perifocal oedema. Both sites of investigation will be marked for the second measurement, which will be done after the end of tumor resection. Laboratory examinations: natremia preoperatively, natremia and osmolarity peroperatively 1 hour after NaCl infusion and at the end of surgery. Concentration of natrium will be examined in CSF after dura opening. Anesthesia management will be according to the standardised protocol, the patients will be awaken and extubated after the end of the procedure at the operating theatre.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 1.5% NaCl | Experimental | Procedure: 1.5% NaClAfter standardized induction to general anesthesia group A patients will be given the infusion of hyperosmotic 1.5% NaCl 5 ml/kg/BW during 15 min. |
| 3% NaCl | Experimental | Procedure: 3% NaClAfter standardized induction to general anesthesia group B patients will be given the infusion of hyperosmotic 3% NaCl 5 ml/kg/BW during 15 min. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- peripheral supratentorial brain tumors or metastasis
- indication for osmotherapy
- ASA status I-III
Key exclusion criteria (5 listed)
- reoperation
- osmotherapy prior to surgery
- preoperative natremia less than 135 mmol/l and more than 140 mmol/l
- GCS less than 14
- obstructive hydrocephalus
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| 1.5% NaClAfter the infusion of 1.5% NaCl and dura opening the microcirculation and the brain relaxation score will be measured in the area of healthy brain and perifocal oedema sites. Microcirculation measurement will be repeated at the same sites after tumor resection. | Procedure or surgery | 1.5% NaCl |
| 3% NaClAfter the infusion of 3% NaCl and dura opening the microcirculation and the brain relaxation score will be measured in the area of healthy brain and perifocal oedema sites. Microcirculation measurement will be repeated at the same sites after tumor resection. | Procedure or surgery | 3% NaCl |
Primary outcome
Changes in brain microcirculation
Time frame: from dura opening till the end of tumor resection
measurement by SDF probe MicroVision
5 secondary outcomes
Changes in natremia
Time frame: 1 hour after hypertonic NaCl infusion
Changes in natremia
Time frame: 5 min after the end of surgery
Changes in osmolarity
Time frame: 1 hour after hypertonic NaCl infusion
Changes in osmolarity
Time frame: 5 min after the end of surgery
Concentration of natrium in cerebrospinal fluid
Time frame: after dura opening
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Oct 2019.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Vlasta Dostalova, MD. principal investigator
University Hospital Hradec Kralove
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing 1.5% NaCl and 3% NaCl in people with Brain Tumors, run by University Hospital Hradec Kralove at 1 site in Czechia.
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 3 inclusion and 5 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: finished, as of the sponsor's last update on 1 Oct 2019. 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 Czechia. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Changes in brain microcirculation (time frame: from dura opening till the end of tumor resection). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 1 Oct 2019; AzTrials last refreshed its copy on 7 Nov 2026.