keyword
MENU ▼
Read by QxMD icon Read
search

Transcranial doppler

keyword
https://www.readbyqxmd.com/read/29452906/extracranial-arterial-wall-volume-is-increased-and-shows-relationships-with-vascular-mri-measures-in-idiopathic-parkinson-s-disease
#1
Stephen Ball, Sarah Al-Bachari, Laura M Parkes, Hedley C A Emsley, Charles N McCollum
OBJECTIVE: Idiopathic Parkinson's disease (IPD) is the second most common neurodegenerative disorder, often complicated by dementia. Cardiovascular risk factors and spontaneous cerebral emboli (SCE) are strongly associated with Alzheimer's (AD) and vascular dementia (VaD). We measured SCE in the middle cerebral artery and arterial wall volume in the extracranial arteries in patients with IPD and controls, and explored the relationships with structural and physiological MRI brain neurovascular measures...
February 10, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29452150/cerebral-blood-flow-velocity-and-autoregulation-in-paediatric-patients-following-a-global-hypoxic-ischaemic-insult
#2
Marlina E Lovett, Tensing Maa, Melissa G Chung, Nicole F O'Brien
AIM: To describe the cerebral blood flow velocity pattern and investigate cerebral autoregulation using transcranial Doppler ultrasonography (TCD) following a global hypoxic-ischaemic (HI) event in children. METHODS: This was a prospective, observational study in a quaternary-level paediatric intensive care unit. Intubated children, newborn to 17 years admitted to the PICU following HI injury (asphyxia, drowning, cardiac arrest) were eligible for inclusion. TCD was performed daily until post-injury day 8, discharge, or death, whichever occurred earliest...
February 13, 2018: Resuscitation
https://www.readbyqxmd.com/read/29444972/usefulness-of-adamts13-to-predict-response-to-recanalization-therapies-in-acute-ischemic-stroke
#3
Alejandro Bustamante, MingMing Ning, Teresa García-Berrocoso, Anna Penalba, Cristina Boada, Alba Simats, Jorge Pagola, Marc Ribó, Carlos Molina, Eng Lo, Joan Montaner
OBJECTIVE: We aimed to analyze ADAMTS13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13) in relation to arterial recanalization in patients treated with IV tissue plasminogen activator (tPA) and in relation to futile recanalization in patients treated with mechanical thrombectomy. METHODS: Acute ischemic stroke patients (n = 108) with documented arterial occlusions treated with IV-tPA were selected. ADAMTS13 activity was measured by ELISA in samples collected before treatment...
February 14, 2018: Neurology
https://www.readbyqxmd.com/read/29444659/right-to-left-shunt-and-subclinical-ischemic-brain-lesions-in-chinese-migraineurs-a-multicentre-mri-study
#4
Xiao-Han Jiang, Si-Bo Wang, Qian Tian, Chi Zhong, Guan-Ling Zhang, Ya-Jie Li, Pan Lin, Yong You, Rong Guo, Ying-Hua Cui, Ying-Qi Xing
BACKGROUND: Migraine is considered as a risk factor for subclinical brain ischemic lesions, and right-to-left shunt (RLS) is more common among migraineurs. This cross-sectional study assessed the association of RLS with the increased prevalence of subclinical ischemic brain lesions in migraineurs. METHODS: We enrolled 334 migraineurs from a multicentre study from June 2015 to August 2016. Participants were all evaluated using contrast-enhanced transcranial Doppler, magnetic resonance imaging (MRI), and completed a questionnaire covering demographics, the main risk factors of vascular disease, and migraine status...
February 14, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29439353/evaluating-peripersonal-space-through-the-functional-transcranial-doppler-are-we-paving-the-way-for-early-detecting-mild-cognitive-impairment-to-dementia-conversion
#5
Angela Marra, Antonino Naro, Antonino Chillura, Alessia Bramanti, Giuseppa Maresca, Rosaria De Luca, Alfredo Manuli, Placido Bramanti, Rocco Salvatore Calabrò
BACKGROUND: Identifying the patients with mild cognitive impairment (MCI) who may develop dementia (MDC) is challenging. The study of peripersonal space (PPS) by using functional transcranial Doppler (fTCD) could be used for this purpose. OBJECTIVE: To identify changes in cerebral blood flow (CBF) during motor tasks targeting PPS, which can predict MDC. METHODS: We evaluated the changes in CBF in 22 patients with MCI and 23 with dementia [Alzheimer's disease (AD) and vascular dementia (VaD)] during a motor task (passive mobilization, motor imagery, and movement observation) in which the hand of the subject moved forward and backward the face...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29431856/cerebral-embolization-silent-cerebral-infarction-and-neurocognitive-decline-after-thoracic-endovascular-aortic-repair
#6
A H Perera, N Rudarakanchana, L Monzon, C D Bicknell, B Modarai, O Kirmi, T Athanasiou, M Hamady, R G Gibbs
BACKGROUND: Silent cerebral infarction is brain injury detected incidentally on imaging; it can be associated with cognitive decline and future stroke. This study investigated cerebral embolization, silent cerebral infarction and neurocognitive decline following thoracic endovascular aortic repair (TEVAR). METHODS: Patients undergoing elective or emergency TEVAR at Imperial College Healthcare NHS Trust and Guy's and St Thomas' NHS Foundation Trust between January 2012 and April 2015 were recruited...
February 12, 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29429015/transcranial-doppler-ultrasound-in-neurocritical-care
#7
REVIEW
Pablo Blanco, Anselmo Abdo-Cuza
Multimodality monitoring is a common practice in caring for neurocritically ill patients, and consists mainly in clinical assessment, intracranial pressure monitoring and using several imaging methods. Of these imaging methods, transcranial Doppler (TCD) is an interesting tool that provides a non-invasive, portable and radiation-free way to assess cerebral circulation and diagnose and follow-up (duplex method) intracranial mass-occupying lesions, such as hematomas and midline shift. This article reviews the basics of TCD applied to neurocritical care patients, offering a rationale for its use as well as tips for practitioners...
February 10, 2018: Journal of Ultrasound
https://www.readbyqxmd.com/read/29426978/impact-of-intracranial-artery-calcification-on-cerebral-hemodynamic-changes
#8
Xiaohong Wu, Li Wang, Jingxin Zhong, Jacky Ko, Lin Shi, Yannie Soo, Thomas Leung, Ka Sing Wong, Jill Abrigo, Xiangyan Chen
PURPOSE: Intracranial artery calcification (IAC) has been demonstrated to be correlated with ischemic stroke, cognitive decline, and other vascular events by accumulating evidences from both Western and Asian populations. The proposed study aimed to investigate its potential mechanisms by evaluating the blood flow velocity and pulsatility index (PI) of cerebral arteries. METHODS: Consecutive ischemic stroke patients admitted to the Prince of Wales Hospital were recruited after excluding those with atrial fibrillation or poor temporal window...
February 9, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29424477/association-of-lipoprotein-associated-phospholipase-a2-mass-with-asymptomatic-cerebral-artery-stenosis
#9
Youxin Wang, Bin Zhou, Pingan Zhou, Yan Yao, Qinghua Cui, Yingping Liu, Jichun Yang, Shouling Wu, Xingquan Zhao, Yong Zhou
Cerebral artery stenosis (CAS) is the most important causes of ischaemic stroke. Lipoprotein-associated phospholipase A2 (Lp-PLA2) plays 2 diverse roles in atherosclerosis (pro-inflammatory and anti-inflammatory), and the association between Lp-PLA2 mass and cardiovascular or cerebrovascular events is inconsistent among previous studies. A cross-sectional study including 2012 North Chinese adults aged ≥40 years was performed in 2010-2011 to investigate whether Lp-PLA2 mass is associated with asymptomatic cerebral artery stenosis (ACAS)...
February 9, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29422868/relationship-between-aortic-compliance-and-impact-of-cerebral-blood-flow-fluctuation-to-dynamic-orthostatic-challenge-in-endurance-athletes
#10
Tsubasa Tomoto, Tomoko Imai, Shigehiko Ogoh, Seiji Maeda, Jun Sugawara
Aorta effectively buffers cardiac pulsatile fluctuation generated from the left ventricular (LV) which could be a mechanical force to high blood flow and low-resistance end-organs such as the brain. A dynamic orthostatic challenge may evoke substantial cardiac pulsatile fluctuation via the transient increases in venous return and stroke volume (SV). Particularly, this response may be greater in endurance-trained athletes (ET) who exhibit LV eccentric remodeling. The aim of this study was to determine the contribution of aortic compliance to the response of cerebral blood flow fluctuation to dynamic orthostatic challenge in ET and age-matched sedentary (SED) young healthy men...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29422852/recurrent-stroke-in-a-young-woman-with-a-single-pulmonary-arteriovenous-fistula-an-unusual-association
#11
Sandra Sousa, Nuno Vasco Costa, Cátia Carmona, Élia Coimbra, Fernando Pita
Introduction: Cryptogenic stroke is present in about 40% of ischemic stroke patients. Extracardiac shunt related to pulmonary arteriovenous fistula (PAVF) could be a rare potential risk factor for embolic stroke. Most PAVFs are multiple, congenital, and associated with hereditary conditions. On the other hand, isolated PAVFs are rare conditions and an uncommon cause of cryptogenic stoke. Case Report: We describe a case of a young woman without history of respiratory diseases or vascular risk factors, who presented with acute onset of transitory aphasia and right hemiplegia...
September 2017: Case Reports in Neurology
https://www.readbyqxmd.com/read/29421451/intracranial-hypertension-and-cerebral-autoregulation-a-systematic-review-and-meta-analysis
#12
REVIEW
Marcelo de Lima Oliveira, Angela S M Salinet, Ricardo C Nogueira, Daniel S de Azevedo, Wellingson S Paiva, Manoel J Teixeira, Edson Bor-Seng-Shu
OBJECTIVE: The objective of this paper is to present a systematic review and meta-analysis to establish the relation between cerebral autoregulation (CA) and intracranial hypertension. METHODS: An electronic search using the term "Cerebral autoregulation and intracranial hypertension" was designed to identify studies that analyzed cerebral blood flow (CBF) autoregulation in patients undergoing intracranial pressure (ICP) monitoring. The data were used in meta-analyses and sensitivity analyses...
February 5, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29420354/the-rise-and-fall-of-transcranial-doppler-ultrasonography-for-the-diagnosis-of-vasospasm-in-aneurysmal-subarachnoid-hemorrhage
#13
Réza Behrouz
No abstract text is available yet for this article.
February 7, 2018: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/29417750/does-gradual-change-in-head-positioning-affect-cerebrovascular-physiology
#14
Man Y Lam, Victoria J Haunton, Thompson G Robinson, Ronney B Panerai
We studied cerebral blood velocity (CBV), and associated hemodynamic parameters during gradual changes in head positioning in a nonstroke group. CBV (transcranial Doppler ultrasound), beat-to-beat blood pressure (BP, Finometer), and end-tidal carbon dioxide (ETCO2 , capnography) were recorded between lying flat (0°) and sitting up (30°) head positions, in 18 volunteers (10 female, mean age, 57 ± 16 years), at two visits (12 ± 8 days). A significant reduction was found between 5-min FLAT (0°) and 5-min SIT (30°) positions in CBV (visit 1: 4...
February 2018: Physiological Reports
https://www.readbyqxmd.com/read/29405840/changes-in-transcranial-ultrasound-velocities-in-children-with-sickle-cell-disease-undergoing-adenotonsillectomy
#15
Griffin Santarelli, Sarah C DeShields, Stacey L Ishman, Michael Randall, Tina D Cunningham, Cristina M Baldassari
Objectives (1) To assess for changes in cerebral blood flow velocity in children with sickle cell disease and obstructive sleep apnea (OSA) following adenotonsillectomy. (2) To determine if clinical factors such as OSA severity affect cerebral blood flow velocity values. Study Design Case series with chart review over 10 years. Settings Two tertiary children's hospitals. Subjects and Methods Children aged 2 to 18 years with a history of sickle cell disease and OSA, as defined by an apnea hypopnea index (AHI) >1 on polysomnography, were eligible for inclusion...
January 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29399014/evaluation-of-application-value-of-transcranial-doppler-tcd-in-the-inspection-of-cerebral-vasospasm-after-the-treatment-of-intracranial-aneurysm
#16
Yuling Wang, Yongqian Ma, Peiquan Hui, Guangheng Liu, Yanyan Luan, Chunguang Wang
Objective This study aimed to explore the application value of transcranial doppler (TCD) in the inspection of cerebral vasospasm (CVS) after the treatment of intracranial aneurysm. METHODS: 105 cases of patients with confirmed intracranial aneurysm were divided into two groups based on the two different treatments - craniotomy and aneurysmal clipping or interventional emboli-zation therapy. TCD was applied to monitor the conditions of CVS of 105 cases, and case study re-search method was used to analyze and conclude the TCD inspection data of patients with intracrani-al aneurysm detected after operation...
February 2018: Current Medical Imaging Reviews
https://www.readbyqxmd.com/read/29398806/lower-transcranial-doppler-flow-velocities-in-sickle-cell-anemia-patients-on-hydroxyurea-myth-or-fact
#17
Sawsan M Moeen, Ahmad F Thabet, Hosam A Hasan, Medhat A Saleh
Transcranial Doppler (TCD) detects stroke risk in patients with sickle cell anemia (SCA). Hydroxyurea therapy has the ability to induce increased levels of fetal hemoglobin in sickle cells thus decreasing tendency for red cell sickling. This study aimed to evaluate TCD findings in SCA patients on hydroxyurea and correlate the time-averaged mean velocity (TAMV) with their hematological parameters. Forty SCA patients of both sexes, aged 16-22 years with no history of stroke were screened with TCD for an elevated TAMV, divided into: Group T (20 patients on blood transfusion); and Group H (20 patients on daily hydroxyurea)...
January 2018: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/29397783/estimating-pressure-reactivity-index-using-non-invasive-doppler-based-systolic-flow-index
#18
Frederick Adam Zeiler, Peter Smieleweski, Joseph Donnelly, Marek Czosnyka, David Menon, Ari Ercole
To derive models that estimate pressure reactivity index (PRx) using non-invasive transcranial Doppler (TCD) based systolic flow index (Sx_a) and mean flow index (Mx_a), both based on mean arterial pressure, in traumatic brain injury (TBI). Using a retrospective database of 347 TBI patients with ICP and TCD time series recordings we derived PRx, Sx_a and Mx_a. We first derived the autocorrelative structure of PRx based on: A. autoregressive integrative moving average (ARIMA) modelling in representative patients, and B...
February 3, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29388231/ultrasound-imaging-for-traumatic-brain-injury
#19
Samuel S Shin, Thierry A G M Huisman, Misun Hwang
Traumatic brain injury (TBI) is challenging to assess even with recent advancements in computed tomography and magnetic resonance imaging. Ultrasound (US) imaging has previously been less utilized in TBI compared to conventional imaging because of limited resolution in the intracranial space. However, there have been substantial improvements in contrast-enhanced US and development of novel techniques such as intravascular US. Also, continued research provides further insight into cerebrovascular parameters from transcranial Doppler imaging...
February 1, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29384395/diffuse-low-grade-glioma-mimicking-ischemic-infarct-a-case-report
#20
Gaigai Li, Yanyan Li, Yang Hu, Qian Wu, Haihan Yu, Hong Deng, Zhouping Tang
Diffuse low-grade gliomas (LGGs) include WHO grade II diffuse astrocytoma, oligodendroglioma, and oligoastrocytoma. Since the neurological symptoms of LGGs are often subtle and deceptive, LGGs are easily overlooked at their early stage. Here, we report a case of a 49-year-old female with symptoms and imaging manifestations mimicking ischemic infarct. After treatments for ischemic stroke, the symptoms initially fluctuating and then aggravated. In addition, we found that the locations of the lesions did not match the vascular distribution and no obvious abnormalities were observed by Computed Tomography Angiography (CTA) and Transcranial Doppler (TCD)...
January 31, 2018: International Journal of Neuroscience
keyword
keyword
2179
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"