Non-invasive Absolute Intracranial Pressure Measurement in Patients With Malignant Middle Cerebral Artery Infarction for Determination of Timing to Descompressive Craniectomy.

July 24, 2017 updated by: Kienzler Jenny

Non-invasive Absolute Intracranial Pressure Measurement in Patients With Malignant Middle Cerebral Artery Infarction for Determination of Timing to Decompressive Craniectomy

This is a single centre, observational study with a medical device which has Conformité Européenne (CE) marking. The aim of the study is to demonstrate that patients with malignant middle cerebral artery infarction (M-MCA) show an increased intra-cranial pressure (ICP) compared to neurological patients without M-MCA infarction or other space-occupying indications.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

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Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Space-occupying, malignant middle cerebral artery (M-MCA) infarctions are still one of the most devastating forms of ischemic stroke, with a mortality of up to 80% in untreated patients.The term M-MCA is referred to a severe middle cerebral artery (MCA) syndrome with typical clinical symptoms (hemiparesis to hemiplegia, severe sensory deficits, head and eye deviation, hemi-inattention, and, if the dominant hemisphere is involved, global aphasia), following a uniform clinical course (progressive deterioration of conscious within the first 24-48 h), and ending in herniation. An early diagnosis is essential and depends on CT (Computed Tomography) and MRI (Magnetic Resonance Imaging) to aid the prediction of a malignant course, but, until today there is no clear consensus to define and predict radiologically a malignant evolution in early phases.Over the past 10 years, results from randomised controlled trials and their pooled analyses have provided evidence that an early hemicraniectomy leads to a substantial decrease in mortality at and months and is likely to improve functional outcome. However, there are still important questions about the individual indication for decompressive surgery. In consideration of a variable clinical course (some patients develop fatal brain edema early, whereas other patients do not show severe brain swelling for several days), achieving a way to measure, control and predict malignant brain edema formation would be of extremely important value.

In this way, the ICP measuring could represent an objective value to determine in every patient the time point to indicate decompressive craniectomy surgery, and also could allow us to find a correlation between the size of the infarction and periinfarction edema. Therefore the optimal timing of surgical intervention can be defined and all the medical treatment adjusted.

Currently, ICP can be measured and registered only using invasive techniques. The two ICP measurement methods available - intraventricular and intraparenchymal - require both a neurosurgical procedure, in order to implant the catheter and probes within the brain. Thus, these measures include themselves a risk for the subject, and both infections and intracranial bleedings are regular albeit not frequent complications. In addition, invasive recording of ICP requires neurosurgical expertise and intensive care unit (ICU) facilities. Therefore ICP measurement so far, is not a standard of care in stroke units.

A reliable, accurate and precise non-invasive method to measure ICP would be of considerable clinical value, enabling ICP measurement without neurosurgical expertise and ICU facilities. Moreover, it would save the patients from the complication risks associated with invasive measures.

ICP should be measured in patients with MCA stroke in order that their ICP can be observed prospectively.It is expected that any increase in ICP will be detected before neurological deterioration occurs. Beside the benefits for the patient, there is the advantage for the attending physician to have more evidence in his decision and the correct moment to make it.

Non-invasive ICP measurement will be done with non-invasive ICP absolute value meter (Vittamed 205). This device has CE marking since July 2014.The non-invasive technique for measurement of ICP is based on simultaneously measuring of an ophthalmic artery (OA) blood flow parameters in the intracranial (IOA) and extracranial (EOA) segments of the OA with two-depth transorbital Doppler (TCD) measurements including mechanical head frame for fixation of ultrasonic transducer on the closed eye lid.

The planned number of 48 subjects and their non-invasive ICP measurements is expected to be collected during a 36 months period starting from the first quarter of 2018. The main analysis of these data will be done during the three-year project. Measurements will be performed in patients admitted to the Kantonsspital Aarau.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
48

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patient with an ischemic stroke in the internal carotid artery or middle cerebral artery territory at risk of a malignant MCA evolution

Description

Inclusion Criteria:

  • Patient with an ischemic stroke in the internal carotid artery or middle cerebral artery territory at risk of a malignant MCA evolution, defined based on clinical presentation, clinical course (showing a progressive deterioration of conscious within the first 24-48 h), and neuroradiological findings.
  • Age: ≥ 18 years at admission
  • Informed consent obtained

Exclusion Criteria:

  • Patients with wounds, scars including the front orbital region.
  • Patients with any known ocular condition that may be worsened by sustained eye pressure.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
non-invasive ICP) measurement im mmHg
Time Frame: 3 days
The primary outcome is the non-invasive, absolute intra-cranial pressure (ICP) in M-MCA patients before decompressive surgery, as determined by the non-invasive ICP absolute value meter in mmHG
3 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Kienzler Jenny

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Swiss National Fund for Scientific Research

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2018

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2020

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 17, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 17, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 19, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 26, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 24, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • ICP M-MCA Infarction

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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