Stroke, AcuteECHO-SELECTNCT02989376
Carotid Duplex Ultrasound for Selecting Patients for Endovascular Thrombectomy in Acute Stroke Patients
A study testing After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment. in people with Stroke, Acute, run by Ryo Itabashi at 1 site in Japan.
Trial summary
The aim of this study is to address the usefulness of carotid duplex ultrasound as vascular imaging for selecting acute stroke patients for endovascular thrombectomy. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Stroke, Acute
- What is being tested?
- After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment.
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 40 participants
- Where
- 1 siteJapan
- Study dates
- Oct 2016to 30 Oct 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
- Endovascular treatment can be initiated within 6 hours of symptom onset.
- ASPECTS of >=6 is diagnosed by two or more stroke physicians.
- The end diastolic velocity in the common carotid arteries or internal carotid artery is evaluated by carotid duplex ultrasound
- NIHSS score of >=6.
- Age>=18 years.
- Written informed consent is obtained.
Who cannot join
- Pre-stroke modified Rankin Scale (mRS) score >=2.
- Difficulties to evaluate ASPECTS on initial CT.
- Difficulties to groin puncture.
- History of severe allergic reaction to contrast medium.
- End stage renal disease.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Emergent Carotid Ultrasound in Hyperacute Cerebral Vessel Occlusion for Selecting Patients to be Treated With Endovascular Clot Retrieval Treatment
The aim of this study is to address the usefulness of carotid duplex ultrasound as vascular imaging for selecting acute stroke patients for endovascular thrombectomy.
- Conditions
- Stroke, Acute
- Being tested
- After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment.
- Medical subject headings
- Stroke
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment.Procedure or surgery
When the ratio of the end diastolic velocity in the common carotid arteries is greater than 1.4 or the diastolic flow in the internal carotid artery is not detected by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment. If vessel occlusion is not detected by carotid duplex ultrasound, additional vascular imaging including MR angiography or CT angiography is considered.
| Study group | Role | What they receive |
|---|---|---|
| carotid duplex ultrasound | Experimental | Single arm study. After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment. Receives: Procedure: After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment. |
What is being measured
The primary outcome is the main question the study is designed to answer.
modified Rankin Scale
Measured: at 90 days after onset
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Dec 2016 (estimated)
- Study startOct 2016
- Primary completion30 Jun 2019
- Study completion30 Oct 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Stroke, AcuteStudies 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
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 40 participants (actual)
Sponsor and investigators
- Lead sponsor
- Ryo Itabashi
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Ryo Itabashi, Kohnan Hospital
- Investigators
- Ryo Itabashi, MD, Principal investigator, Kohnan Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02989376
- Sponsor's protocol ID
- KohnanSN01
- Acronym
- ECHO-SELECT
- Status last verified
- Feb 2020
- First submitted
- 8 Dec 2016
- Last updated
- 20 Feb 2020
- Results posted
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 Feb 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Emergent Carotid Ultrasound in Hyperacute Cerebral Vessel Occlusion for Selecting Patients to be Treated With Endovascular Clot Retrieval Treatment
- ClinicalTrials.gov ID
- NCT02989376
- Acronym / sponsor ID
- ECHO-SELECT / KohnanSN01
- Conditions
- Stroke, Acute
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 40 participants (actual)
- Lead sponsor
- Ryo ItabashiUniversity, hospital or other
- Study start
- Oct 2016 (actual)
- Primary completion
- 30 Jun 2019 (actual)
- Study completion
- 30 Oct 2019 (actual)
- First posted
- 12 Dec 2016 (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.
The aim of this study is to address the usefulness of carotid duplex ultrasound as vascular imaging for selecting acute stroke patients for endovascular thrombectomy.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| carotid duplex ultrasound | Experimental | Procedure: After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment.Single arm study. After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Endovascular treatment can be initiated within 6 hours of symptom onset.
- ASPECTS of >=6 is diagnosed by two or more stroke physicians.
- The end diastolic velocity in the common carotid arteries or internal carotid artery is evaluated by carotid duplex ultrasound
- NIHSS score of >=6.
- Age>=18 years.
Key exclusion criteria (5 listed)
- Pre-stroke modified Rankin Scale (mRS) score >=2.
- Difficulties to evaluate ASPECTS on initial CT.
- Difficulties to groin puncture.
- History of severe allergic reaction to contrast medium.
- End stage renal disease.
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 |
|---|---|---|
| After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment.When the ratio of the end diastolic velocity in the common carotid arteries is greater than 1.4 or the diastolic flow in the internal carotid artery is not detected by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment. If vessel occlusion is not detected by carotid duplex ultrasound, additional vascular imaging including MR angiography or CT angiography is considered. | Procedure or surgery | carotid duplex ultrasound |
Primary outcome
modified Rankin Scale
Time frame: at 90 days after onset
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 20 Feb 2020.
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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.
Ryo Itabashi, MD principal investigator
Kohnan Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing After detection of occluded vessels by vascular imaging using carotid duplex ultrasound, digital subtraction angiography is immediately performed before acute endovascular treatment. in people with Stroke, Acute, run by Ryo Itabashi at 1 site in Japan.
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 6 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 20 Feb 2020. 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 Japan. 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?
modified Rankin Scale (time frame: at 90 days after onset). 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 20 Feb 2020; AzTrials last refreshed its copy on 7 Nov 2026.