The transient ischemic attack (TIA) is a kind of sudden disease, which has the characteristics of short duration and high frequency. Since most patients can return to normal after the onset of the disease, it is often neglected. Medical research has proved that patients are prone to stroke in a relatively short time after the transient ischemic attacks. Therefore, it is extremely important to effectively monitor transient ischemic attack, especially for elderly people living alone. At present, video monitoring and wearing sensors are generally used to monitor transient ischemic attacks, but these methods have certain disadvantages. In order to more conveniently and accurately monitor transient ischemic attack in the indoor environment and improve risk management of stroke, this paper uses a microwave sensing platform working in C-Band (4.0 GHz–8.0 GHz) to monitor in a non-contact way. The platform first collects data, then preprocesses the data, and finally uses principal component analysis to reduce the dimension of the data. Two machine learning algorithms support vector machine (SVM) and random forest (RF) are used to establish prediction models respectively. The experimental results show that the accuracy of SVM and RF approaches are 97.3% and 98.7%, respectively; indicating that the scheme described in this paper is feasible and reliable.

/pdf/transient-ischemic-attack-analysis-through-non-contact-32h1u1btvt.pdf

Transient ischemic attack analysis through non-contact approaches

Background Although a timely comprehensive diagnostic workup is recommended for patients with transient ischemic attack (TIA), few studies have examined its impact on post‐TIA ischemic stroke risk. In this study, we hypothesized that patients receiving more comprehensive diagnostic workup have better outcomes, regardless of their care setting. Methods Studies on the workup process of patients with TIA and the 90‐day post‐TIA ischemic stroke incidence were searched. Eligible studies were scored 1 to 4 based on the number of diagnostic workups (head computed tomography scan, brain magnetic resonance imaging, and cerebrovascular imaging) and the involvement of a neurology provider in the diagnosis process. Results Thirty‐eight studies were included for meta‐analysis. The overall 90‐day post‐TIA ischemic stroke risk was estimated to be 5% (95% CI, 4.9%–5.1%). Our meta‐analysis showed that studies with higher scores—provided more comprehensive diagnostic workups by neurology providers—had a lower risk of 90‐day post‐TIA ischemic stroke ( P &lt;0.001). The post‐TIA ischemic stroke risk was 8.4% (95% CI, 6.4%–10.8%) among studies with a score of “1, 5.3% (95% CI, 5.2%–5.5%) among studies with a score of 2, 2.9% (95% CI: 2.7%–3.2%) among studies with a score of 3, and 3.2% (95% CI, 2.5%–4%) among studies with a score of 4. The difference between studies with a score of 3 and ”4 was not statistically significant ( P =0.524). Moreover, studies with more comprehensive cardiac examinations had lower 90‐day post‐TIA ischemic stroke risk ( P &lt;0.001). Conclusions Our findings highlight that a more comprehensive diagnostic workup—neuroimaging, cerebrovascular studies, and cardiac examinations—of patients with TIA delivered by neurology providers might improve their outcomes by reducing the risk of 90‐day post‐TIA ischemic stroke, regardless of the care setting. 

Risk of Ischemic Stroke After Transient Ischemic Attack in Patients Receiving Comprehensive Versus Noncomprehensive Diagnostic Workup: A Systematic Review and Meta‐Analysis

Comparison of recommended use of paraclinical investigations by emergency physicians and neurologists for emergency department patients with headaches: a retrospective observational study.

Introduction Emergency departments play a key role in the diagnosis and treatment of transient ischemic attacks, but limited data are available about the early management of such patients in emergency wards. Therefore, we aimed to evaluate emergency physicians’ management of transient ischemic attack and analyze variations factors. Methods A multicenter survey among emergency physicians of the Grand Est region network (Est-RESCUE) was conducted from January 28th to March 28th, 2019. Medical and administrative data were collected by the same network and the national directory of medical resources. Results Among 542 emergency physicians recipients, 78 answered (14%) and 71 were finally included, practicing in 25 public hospitals homogeneously distributed across the territory, including 3 university hospitals. A cerebral magnetic resonance imaging was obtained for 75%-100% of patients by 4.3% of responders, 36.4% of which were performed within more than 24 hours. A cardiac monitoring was prescribed in 75%-100% of cases by 32.4% of responders. A neurologic consultation was routinely requested by 84.6% of responders practicing in a university hospital and 36.8% of responders practicing in a community hospital (P = .02). Patients were hospitalized in a neurovascular unit in 75%-100% of cases by 17.4% of responders, which happened more likely in university hospitals (P Conclusions Transient ischemic attack suffers from management disparities across territories, due to limited access to technical facilities and neurologic consultations. Therefore, international recommendations are too often not followed. Implementation of territorial neurovascular tracks may help to standardize the management of these patients.

Early Management of Transient Ischemic Attack in Emergency Departments in France.

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Comparison of recommended use of paraclinical investigations by emergency physicians and neurologists for emergency department patients with headaches: a retrospective observational study.

Early Management of Transient Ischemic Attack in Emergency Departments in France.