- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06024330
External Validation of VAN, VES and LARIO Scales in Suspected Acute Stroke
External Validation of the VAN, VES, and LARIO Scoring Systems in Patients Suspected of Acute Stroke in Emergency Triage: A Multicenter Prospective Cross-sectional Study
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Estimated)
Contacts and Locations
Study Locations
-
-
Kocaeli
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İzmit, Kocaeli, Turkey, 41100
- Kocaeli University
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- Adult patients admitted to the ED with the suspicion of stroke by EMS.
Exclusion Criteria:
- More than 24 hours have passed since the onset of symptoms or the last known normal in the patient.
- The emergency physician does not indicate the need for imaging like Computerized Tomography (CT), CT Angiography (CTA), Diffusion-Weighted Magnetic Resonance Imaging (DWI-MRI), or Magnetic Resonance Angiography (MRA), or the imaging test cannot be performed.
- Exacerbation of residual symptoms due to a previous hemorrhagic or ischemic stroke.
- Conditions in the ED that prevent scale assessment (e.g., advanced airway needs, the patient's non-cooperation with the examination, immediate resuscitation need, etc.).
- Patients transferred to ED after being diagnosed at another healthcare institution.
- Pregnant patients
- Non-consenting patients.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Positive VAN scale
Motor Function: Check for arm drift with arms extended, palms up, and eyes closed for 10 seconds. If present, proceed to the VAN criteria. V (Visual): Assess for reported double vision, field cut, or vision loss, or difficulty seeing fingers in a quadrant. If any visual disturbances are found, the patient is "VAN positive". A (Aphasia): Identify difficulties forming words, repeating a short sentence, recognizing two objects, or following simple commands. If any aphasia symptoms are observed, the patient is "VAN positive". N (Neglect): Check for forced gaze, inability to track a pen to one side, or lack of sensation in limbs. If any neglect signs are detected, the patient is "VAN positive". |
An investigator assesses the VAN scale when a patient arrives at ED triage with a suspected stroke.
|
Negative VAN scale
A negative VAN scale indicates that a potential stroke patient does not exhibit the primary signs associated with a large vessel occlusion (LVO).
Specifically, the patient demonstrated no arm drift during the initial motor function test.
If the motor assessment is proceeded to the VAN criteria, the patient shows no visual disturbances like double vision or field cuts ("V"), no aphasia symptoms such as difficulty forming words or repeating sentences ("A"), and no signs of neglect, like forced gaze or lack of sensation in limbs ("N")
|
An investigator assesses the VAN scale when a patient arrives at ED triage with a suspected stroke.
|
Positive VES scale
Eye Deviation: Scored as 1 if there's a forced deviation of both eyes to any side; otherwise, scored as 0. Aphasia: Scored as 1 if the patient is awake and exhibits one or more of the following: Inability to repeat a sentence. Inability to name an object. Talking incoherently or not obeying commands. Being mute. Otherwise, scored as 0. Neglect: Scored as 1 if the patient can perceive touch on both sides individually but fails to feel it on one side when stimulated simultaneously. Otherwise, scored as 0. Obtundation: Scored as 1 if the patient cannot maintain wakefulness during a conversation; otherwise, scored as 0. The VES can range from 0 to 4. A score of 1 or higher suggests a positive likelihood for ELVO. Additionally, if a patient tests positive for aphasia, neglect can be deduced by noting if the patient disregards the examiner on one side but is responsive when the examiner switches sides. |
An investigator assesses the VES scale when a patient arrives at ED triage with a suspected stroke.
|
Negative VES scale
Eye Deviation: No forced deviation of both eyes is observed. Aphasia: The patient, while awake, can repeat sentences, name objects, speaks coherently, follows commands, and is not mute. Neglect: The patient can perceive touch both when sides are stimulated individually and simultaneously. Obtundation: The patient remains awake and alert during conversation. A total score of 0 on the VES scale represents a VES negative outcome. |
An investigator assesses the VES scale when a patient arrives at ED triage with a suspected stroke.
|
Positive LARIO scale
Facial Palsy: The presence of facial muscle weakness or paralysis scores 1, while a normal facial expression scores 0. Arm Weakness: A score of 1 is given for arm drift, no effort against gravity, or no movement at all. No drift is scored 0. Grip Strength: Reduced or absent grip strength scores 1, while a normal grip scores 0. Language: Changes in speech, global aphasia, or the patient being mute results in a score of 1. Normal language is scored 0. Neglect: A score of 1 is given if the patient exhibits extinction to bilateral simultaneous stimulation in one or more sensory modality, doesn't recognize their own hand, or consistently orients only to one side of the body. The absence of these signs scores 0. A cumulative score exceeding 3 on the LARIO Stroke Scale categorizes the patient as "LARIO positive," |
An investigator assesses the LARIO scale when a patient arrives at ED triage with a suspected stroke.
|
Negative LARIO scale
Facial Palsy: No observable facial muscle weakness or paralysis. Arm Weakness: The arm remains steady without drift and exhibits normal effort against gravity. Grip Strength: The patient displays normal grip strength. Language: The patient speaks normally, without aphasia or muteness. Neglect: No signs of sensory extinction upon bilateral simultaneous stimulation, proper recognition of their own hand, and balanced orientation to both sides of the body. A cumulative score of 3 or less on the LARIO Stroke Scale classifies the patient as "LARIO negative," |
An investigator assesses the LARIO scale when a patient arrives at ED triage with a suspected stroke.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Diagnostic performance of VAN for predicting ELVO
Time Frame: 24 hours
|
Sensitivity, specificity, PPV, NPV
|
24 hours
|
Diagnostic performance of VES for predicting ELVO
Time Frame: 24 hours
|
Sensitivity, specificity, PPV, NPV
|
24 hours
|
Diagnostic performance of LARIO for predicting ELVO
Time Frame: 24 hours
|
Sensitivity, specificity, PPV, NPV
|
24 hours
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Diagnostic performance of NIHSS for predicting ELVO
Time Frame: 24 hours
|
Sensitivity, specificity, PPV, NPV
|
24 hours
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- KU GOEK-2022/06.15
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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