Results 91 to 100 of about 1,633 (249)

Procoagulatory changes induced by head-up tilt test in patients with syncope: observational study

Thrombosis Journal, 2017
Background Orthostatic hypercoagulability is proposed as a mechanism promoting cardiovascular and thromboembolic events after awakening and during prolonged orthostasis.
Viktor Hamrefors, Artur Fedorowski, Karin Strandberg, Richard Sutton, Nazim Isma   +4 more
doaj   +1 more source

Cerebral Perfusion Monitoring Using Near-Infrared Spectroscopy During Head-Up Tilt Table Test in Patients With Orthostatic Intolerance [PDF]

, 2019
The head-up tilt table test (HUT) is one of the primary clinical examinations for evaluating orthostatic intolerance (OI). HUT can be divided into three phases: dynamic tilt phase (supine to tilt up), static tilt phase (remain tilted at 70°), and post ...
Zephaniah Phillips V, Seung-ho Paik, Beop-Min Kim, Byung-Jo Kim, Yoo Hwan Kim, Nam-Joon Jeon   +5 more
core   +1 more source

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

Advanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo, Mi Jeong Lee, Hyun Wook Kang, Seonhee Byeon, Soo‐Kyoung Choi, Nakwon Choi, Seung‐Woo Cho, Yoonhee Jin   +7 more
wiley   +1 more source

Different haemodynamic patterns in head-up tilt test on 400 paediatric cases with unexplained syncope

, 2015
Objective: To assess haemodynamic patterns in head-up tilt testing on 400 paediatric cases with unexplained syncope. Methods: Medical records of 520 children who underwent head-up tilt testing in the preceding year were retrospectively evaluated, and 400
Mese, Timur, Ozdemir, RAHMİ, Karadeniz, Cem, Karaarslan, Utku, Yozgat, Yilmaz, Unal, Nurettin, Doksoz, Onder, Kucuk, Mehmet   +7 more
core   +1 more source

Mechanoluminescent HOF Nanotransducers Enabled Sono‐Optogenetics in Parkinsonian Rats

Advanced Functional Materials, EarlyView.
We present a mechanoluminescent system utilizing porous hydrogen‐bonded organic frameworks (HOFs) as a toolkit for focused ultrasound‐triggered, non‐invasive light delivery to the deep brain in rats. This approach enables the specific activation of PV‐GPe neurons in dopamine‐depleted Parkinson's disease rat models, resulting in a comparable alleviation
Wenliang Wang, Ilya Pyatnitskiy, Yanshu Shi, Kai Wing Kevin Tang, Yi Xie, Sihan Yu, Thomas Wynn, Xiangping Liu, Ju‐Chun Hsieh, Jinmo Jeong, Weilong He, Brinkley Artman, Anakaren Romero Lozano, Xi Shi, Arjun Sangani, Lief E Fenno, Samantha Santacruz, Banglin Chen, Huiliang Wang   +18 more
wiley   +1 more source

Head-up tilt testing in older syncope patients: a systematic review

Age and Ageing
Abstract Background In older syncope patients, medical histories are often less reliable due to retrograde amnesia and cognitive impairment. Therefore, additional tests may be needed to reach a diagnosis. We conducted a systematic review to evaluate positivity rates and safety of head-up tilt testing (
Ruiter, S.C. de, Marum, R.J. van, Ruiter, J.H., Hemels, M.E.W., Groot, J.R. de, Jansen, R.   +5 more
openaire   +3 more sources

Vestibular function in different otoneurological patients as measured by head tilt and head impulse test

, 2014
Objectives The first objective was to evaluate feasibility of head tilt testing and the motorized head impulse test (mHIT) for the quantification of vestibular function and its possible change in different otoneurological patient groups.
Jutila, Topi
core  

Targeting Post‐Irradiation Thyroid Dysfunction: Electrospun Scaffolds As A Dual‐Action Approach for Antioxidant and Immune Modulation

Advanced Healthcare Materials, EarlyView.
Radiation‐induced hypothyroidism follows head and neck radiotherapy due to oxidative stress and inflammation. Electrospun polycaprolactone scaffolds containing adenosine have potential to modulate thyroid repair. Scaffolds enhance thyrocyte proliferation, antioxidant enzymes glutathione peroxidase and catalase, reduce senescence and apoptosis markers ...
Maria Heim, Ella‐Louise Handley, Daniel Grant, Lizi M. Hegarty, Elaine Emmerson, Anthony Callanan   +5 more
wiley   +1 more source

Head-Up Tilt Table Testing with Sublingual Isosorbide Dinitrate in the Diagnosis of Vasovagal Syncope in Children

Eurasian Journal of Medicine, 2019
Objective: To evaluate the effect of sublingual administration of ISDN on the results of the head-up tilt table test (HUTT) in children and adolescents with vasovagal syncope. Materials and Methods: The study group consisted of 30 children, each
Mehmet Karacan, Hasim Olgun, Naci Ceviz
doaj  

Cerebral blood flow changes during tilt table testing in healthy volunteers, as assessed by Doppler imaging of the carotid and vertebral arteries

Clinical Neurophysiology Practice, 2018
Objectives: Using different techniques, reduction of cerebral blood flow (CBF) during orthostatic stress were demonstrated. One study reported flow reduction of the right internal carotid (ICA) and vertebral (VA) artery during orthostatic stress by ...
C. (Linda).M.C. van Campen, Freek W.A. Verheugt, Frans C. Visser   +2 more
doaj   +1 more source