Results 51 to 60 of about 422,931 (314)

Hydrogel Adhesive Integrated‐Microstructured Electrodes for Cuff‐Free, Less‐Invasive, and Stable Interface for Vagus Nerve Stimulation

Advanced Healthcare Materials, EarlyView.
In this study, a cuff‐free, less‐invasive surgical approach for vagus nerve stimulation (VNS) by combining ultrathin Y‐shaped kirigami electrodes is developed with a chemically cross‐linked hydrogel adhesive (hydrogel‐kirigami). Unlike conventional cuff implantation, which may damage nerves and nearby critical vessels, this new technique minimizes ...
Jae Young Park, Jongcheon Lim, Carl R. Russell III, Pei‐Lun Chen, Deniz Eksioglu, Seokkyoon Hong, Juan C. Mesa, Matthew P. Ward, Chi Hwan Lee, Hyowon Lee   +9 more
wiley   +1 more source

Blood Flow Lateralization and Collateral Compensatory Mechanisms in Patients With Carotid Artery Stenosis

Stroke, 2019
Background and Purpose— Four-dimensional phase-contrast magnetic resonance imaging enables quantification of blood flow rate (BFR; mL/min) in multiple cerebral arteries simultaneously, making it a promising technique for hemodynamic investigation in ...
L. Zarrinkoob, A. Wåhlin, K. Ambarki, R. Birgander, A. Eklund, J. Malm   +5 more
semanticscholar   +1 more source

Higher ventricular rate during atrial fibrillation relates to increased cerebral hypoperfusions and hypertensive events [PDF]

Scientific Reports, 9: 3779, 2019, 2019
Atrial fibrillation (AF) is associated with cognitive impairment/dementia, independently of clinical cerebrovascular events (stroke/TIA). One of the plausible mechanisms is the occurrence of AF-induced transient critical hemodynamic events; however, it is presently unknown, if ventricular response rate during AF may impact on cerebral hemodynamics.
arxiv   +1 more source

Non‐Surgical, In‐Stent Membrane Bioelectronics for Long‐Term Intracranial Pressure Monitoring

Advanced Healthcare Materials, EarlyView.
This image shows a sequence of long‐term intracranial pressure monitoring using non‐surgical, in‐stent membrane bioelectronics. Abstract Traditional intracranial pressure (ICP) monitoring methods, using intraventricular catheters, face significant limitations, including high invasiveness, discrete data, calibration complexities, and drift issues, which
Jimin Lee, Allison Bateman, Mi Hyeon Kim, Bruno Rigo, Hodam Kim, Jaeho Lee, Yun Hyeok Choi, Robert Herbert, Deok Hee Lee, Woon‐Hong Yeo   +9 more
wiley   +1 more source

Hypoglossal nerve palsy due to carotid artery dissection: an uncommon presentation of a common problem

The Neuroradiology Journal, 2019
Spontaneous internal carotid artery dissection occurs in patients of all ages, rarely presenting with hypoglossal nerve palsy. The characteristic imaging findings of internal carotid artery dissection and tongue denervation are reviewed in four patients.
M. Jurkiewicz, J. Stein, K. Learned, Ilya M. Nasrallah, L. Loevner   +4 more
semanticscholar   +1 more source

Separate origins of the left internal and external carotid arteries from the aorta in a patient with intracerebral hemorrhage

Radiology Case Reports, 2022
Agenesis of the left common carotid artery with separate origins of the left internal and external carotid arteries from the aorta is an extremely rare anomaly. This anomaly is typically asymptomatic unless associated with other conditions.
Yuma Hiratsuka, MD, Hideki Endo, MD, PhD, Naoyasu Okamura, MD, Masaaki Mikamoto, MD, Bunsho Asayama, MD, Kenji Kamiyama, MD, Toshiaki Osato, MD, Hirohiko Nakamura, MD, PhD   +7 more
doaj  

Progress and Application of Multifunctional Hydrogel in Radioactive Skin Injury

Advanced Materials Interfaces, EarlyView.
This review examines healing challenges in radiation‐wound injuries, where ionizing radiation impairs immune and tissue repair processes. Hydrogels, with their biocompatibility, antimicrobial properties, and drug delivery capabilities, present a transformative solution. It compares hydrogel efficacy in radiation‐induced versus common wounds, highlights
Xinyue Cui, Jingyi Wang, Xinyi Xu, Xiqian Cao, Yingtang Zhou, Jiaming Guo   +5 more
wiley   +1 more source

Neurocognitive Improvement After Carotid Artery Stenting in Patients With Chronic Internal Carotid Artery Occlusion and Cerebral Ischemia

Stroke, 2011
Background and Purpose— Chronic cerebral hypoperfusion may lead to impairment in neurocognitive performance in patients with chronic internal carotid artery occlusion, and the effects of carotid artery stenting on neurocognitive function have been ...
Mao-Shin Lin, M. Chiu, Yen-Wen Wu, Ching-Chang Huang, C. Chao, Ying-Hsien Chen, Hung-Ju Lin, Hung-Yuan Li, Ya-Fang Chen, Lung-Chun Lin, Yen‐Bin Liu, C. Chao, W. Tseng, Ming-Fong Chen, H. Kao   +14 more
semanticscholar   +1 more source

Computational Fluid Dynamic Simulations In a Model of a Carotid Bifurcation Under Steady Flow Conditions [PDF]

arXiv, 2020
Strokes are still one of the leading causes for death after heart diseases and cancer in all over the world. Most strokes happen because an artery that carries blood uphill from the heart to the head gets clogged. Most of the time, as with heart attacks, the problem is atherosclerosis, hardening of the arteries, calcified buildup of fatty deposits on ...
arxiv  

Increased Expression of Interleukin-18 mRNA is Associated with Carotid Artery Stenosis

Balkan Medical Journal, 2018
Background: Carotid artery stenosis is the atherosclerotic narrowing of the proximal internal carotid artery and one of the primary causes of stroke. Elevated expression of the pleiotropic proinflammatory cytokine interleukin-18 has been demonstrated in ...
Berk Arapi, Burcu Bayoğlu, Müjgan Cengiz, Ahmet Dirican, Serkan Burç Deser, Yerik Junusbekov, Caner Arslan   +6 more
doaj   +1 more source