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This study is designed to evaluate the accuracy of saline electrode EEG in the prehospital diagnosis of LVO-a stroke.
This is a multicenter, prospective, observational study,which will screen a total of 1194 patients in the participating centers during the period of June 1, 2024-December 31, 2025, and record single scalp EEG signals with eyes open at rest in the lying position of the patients using a non-invasive EEG acquisition device, and collect clinical data.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| electroencephalography | Device | Fifty-nine EEG electrodes conforming to international standard points were placed using a saline electrode EEG cap (Gelfree, Prysmian, China), and an accompanying portable multimodal EEG acquisition system (Neurohub, Prysmian, China) was used. EEG data were collected using collect software (Brycon, China). |
| Measure | Description | Time Frame |
|---|---|---|
| Saline electrode EEG characteristics: area under the ROC curve for theta/alpha ratio; | Accuracy of theta/alpha ratio of electroencephalographic features for the diagnosis of large vessel occlusion Accuracy of theta/alpha ratio of electroencephalographic features for the diagnosis of anterior large vessel occlusion stroke | 24 hours |
| Measure | Description | Time Frame |
|---|---|---|
| Other EEG features including relative δ, θ, α power, δ/α ratio, δ+θ/α+β ratio, pdBSI, and WPLI diagnostic accuracy for LVO-a; | ROC curves were plotted for each EEG data feature predicting LVO-a, and sensitivity, specificity, PPV, and NPV were calculated at the optimal cutoff value. | 24 hours |
| Logic and technical feasibility of saline electrode EEG in ambulance for suspected stroke patients by paramedics; |
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Inclusion Criteria:
Phase II-III
Exclusion Criteria:
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All patients with suspected stroke or known stroke were included in the study
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| junwei Hao, MD | Contact | 01083198277 | haojunwei@vip.163.com | |
| Gaoting Ma, MD | Contact | 18301579891 | demo_doctor@163.com |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Xuanwu Hospital, Beijing | Beijing | Beijing Municipality | 100053 | China |
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| ID | Term |
|---|---|
| D004569 | Electroencephalography |
| ID | Term |
|---|---|
| D003943 | Diagnostic Techniques, Neurological |
| D019937 | Diagnostic Techniques and Procedures |
| D003933 | Diagnosis |
| D004568 | Electrodiagnosis |
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Remove EEG data artifacts and report the percentage of EEG data available for analysis for each patient |
| 24 hours |
| Development of one or more new algorithms for optimal diagnosis of LVO-a based on EEG data | ROC curves for predicted LVO-a based on this algorithm were plotted and sensitivity, specificity, PPV and NPV were calculated at the optimal cutoff value. | 24 hours |