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Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke

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Association between Heat Vulnerability Index and Stroke Severity.

Jason J Wang^1,2,3, Jeffrey M Katz^1,3,4, Maria X Sanmartin^1,2,3

¹Northwell Health, New Hyde Park, NY 11040, USA.

International Journal of Environmental Research and Public Health

|August 29, 2024

Summary

High heat vulnerability index (HVI) in neighborhoods is linked to increased severity of acute ischemic stroke (AIS). This highlights the need for targeted interventions in disadvantaged areas to reduce heat-related illness and stroke risk.

Keywords:

acute ischemic stroke heat vulnerability index stroke severity

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Area of Science:

Environmental Health
Neurology
Public Health

Background:

Socioeconomically disadvantaged neighborhoods face heightened risks of heat-related illnesses.
The Heat Vulnerability Index (HVI) quantifies neighborhood-level heat-related mortality risk.
Understanding the link between HVI and acute ischemic stroke (AIS) severity is crucial for public health.

Purpose of the Study:

To investigate the association between the Heat Vulnerability Index (HVI) and the severity of acute ischemic stroke (AIS).

Main Methods:

Retrospective analysis of 3429 AIS admissions from 2012-2021.
Stroke severity assessed using the National Institutes of Health Stroke Scale (NIHSS) upon admission.
HVI status determined by residential ZIP codes; multivariable logistic regression performed.

Main Results:

32.8% of AIS admissions were from high-HVI neighborhoods (scores 4-5).
25.3% of patients experienced severe stroke (NIHSS score ≥ 10).
High HVI was independently associated with severe stroke (aOR: 1.40; 95% CI: 1.16-1.69).

Conclusions:

A high HVI is associated with increased severity of acute ischemic stroke.
Findings emphasize the importance of targeted interventions for heat-related illness in vulnerable neighborhoods.
Policy interventions should address socioeconomic disparities impacting heat vulnerability and stroke outcomes.