keyword
MENU ▼
Read by QxMD icon Read
search

cerebral monitoring

keyword
https://www.readbyqxmd.com/read/28803941/fast-imaging-for-mapping-dynamic-networks
#1
REVIEW
Pierre LeVan, Burak Akin, Jürgen Hennig
The development of highly accelerated fMRI acquisition techniques has led to novel possibilities to monitor cerebral activity non-invasively and with unprecedented temporal resolutions. With the emergence of dynamic connectivity and its ability to provide a much richer characterization of brain function compared to static measures, fast fMRI may yet play a crucial role in tracking dynamically varying networks. In spite of the dominance of slow hemodynamic contributions to the BOLD signal, high temporal sampling rates nevertheless improve the measurement of physiological noise, yielding an exceptional sensitivity for the detection of periods of transient connectivity at time scales of a few tens of seconds...
August 10, 2017: NeuroImage
https://www.readbyqxmd.com/read/28803174/intraoperative-vascular-neuromonitoring-in-patients-with-subarachnoid-hemorrhage-a-pilot-study-using-combined-laser-doppler-spectrophotometry
#2
Emilija Schmitz, Barbara Bischoff, Dennis Wolf, Hubert Schmitt, Ilker Y Eyupoglu, Karl Roessler, Michael Buchfelder, Björn Sommer
OBJECTIVE: Intraoperative monitoring of cerebral microcirculation in patients with subarachnoid hemorrhage (SAH) may predict the postoperative neurological outcome. In this pilot study, we examined the value of a novel non-invasive real-time measurement technique to detect changes in local microcirculation. METHODS: We used the laser-Doppler spectrophotometry system "Oxygen-to-see(O2C)" in 14 patients with SAH Hunt & Hess grade 2 to 5, who underwent microsurgical clipping of cerebral aneurysms...
August 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28801417/optic-nerve-sheath-diameter-sonography-for-the-diagnosis-of-increased-intracranial-pressure-a-systematic-review-and-meta-analysis-protocol
#3
Alex Koziarz, Niv Sne, Fraser Kegel, Waleed Alhazzani, Siddharth Nath, Jetan H Badhiwala, Timothy Rice, Paul Engels, Faidi Samir, Andrew Healey, Kamyar Kahnamoui, Laura Banfield, Sunjay Sharma, Kesava Reddy, Gregory W J Hawryluk, Andrew W Kirkpatrick, Saleh A Almenawer
INTRODUCTION: Increased intracranial pressure (ICP) is a significant neurological issue that may lead to permanent neurological sequelae. When evaluating patients with traumatic brain injury, it is crucial to identify those with high ICP in order to expedite ICP lowering measures and maintain adequate cerebral perfusion. Several measures are used to recognise patients with increased ICP including CT scan, MRI, ICP monitor, and lumbar puncture (LP). However, these tests can be invasive, associated with radiation exposure, contraindicated, or not readily available...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28801284/-yiqihuoxue-prescription-promotes-nerve-regeneration-by-mir-124-mediated-regulation-of-wnt-signaling-in-rats
#4
Hui Tan, Jian Wang, Ting-Ting Yin, Ling He, Yong Deng, Feng Li, Yu-Feng Wang
OBJECTIVE: To investigate the effect of Yiqihuoxue prescription (NLXT) on nerve regeneration in MCAO-R rat models of qi deficiency and blood stasis syndrome and explore the underlying mechanisms. METHODS: The rats were randomized into 4 groups, namely the control group, model group, NLXT group and TXL group. The rats in NLXT group and TXL group were treated with gavage of NLXT and TXL solutions, respectively. The NFDS, QDSS and BSSS of the rats were evaluated. The regional cerebral blood flow (rCBF) were dynamically monitored with laser Doppler scanning, and the volume of cerebral infarction was detected with TTC-dye; the expression levels of nestin and BrdU were assayed with immunohistochemistry and mmunofluorescent staining...
August 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28800981/near-infrared-spectroscopy-in-adult-cardiac-surgery-patients-a-systematic-review-and-meta-analysis
#5
Matthew J Chan, Tricia Chung, Neil J Glassford, Rinaldo Bellomo
OBJECTIVES: To identify the normal baseline preoperative range of cerebral tissue oxygen saturation (SctO2) derived using near-infrared spectroscopy (NIRS) and the efficacy of perioperative interventions designed to modulate SctO2 in cardiac surgical patients. DESIGN: Systematic review and meta-analysis of relevant randomized controlled trials (RCTs) extracted from the Medline, Embase, and Cochrane Central Register of Controlled Trials databases. SETTING: Hospitals performing cardiac surgery...
August 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28800207/optically-derived-metabolic-and-hemodynamic-parameters-predict-hippocampal-neurogenesis-in-the-btbr-mouse-model-of-autism
#6
David Abookasis, Danit Lerman, Hava Roth, Mati Tfilin, Gadi Turgeman
In the present study, we made use of dual-wavelength laser speckle imaging (DW-LSI) to assess cerebral blood flow in the BTBR genetic mouse model of Autism Spectrum Disorder, as well as control (C57Bl/6J) mice. Since the deficits in social behavior demonstrated by BTBR mice are attributed to changes in neural tissue structure and function, we postulated that these changes can be detected optically using DW-LSI. BTBR mice demonstrated reductions in both cerebral blood flow (CBF) and cerebral oxygen metabolism (CMRO2 ), as suggested by studies using conventional neuroimaging technologies to reflect impaired neuronal activation and cognitive function...
August 11, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28791783/quantitative-susceptibility-mapping-as-a-monitoring-biomarker-in-cerebral-cavernous-malformations-with-recent-hemorrhage
#7
Hussein A Zeineddine, Romuald Girard, Ying Cao, Nicholas Hobson, Maged D Fam, Agnieszka Stadnik, Huan Tan, Jingjing Shen, Kiranj Chaudagar, Robert Shenkar, Richard E Thompson, Nichol McBee, Daniel Hanley, Timothy Carroll, Gregory A Christoforidis, Issam A Awad
BACKGROUND: Quantitative Susceptibility Mapping (QSM) MRI allows accurate assessment of iron content in cerebral cavernous malformations (CCM), and a threshold increase by 6% in QSM has been shown to reflect new symptomatic hemorrhage (SH) in previously stable lesions. PURPOSE/HYPOTHESIS: It is unclear how lesional QSM evolves in CCMs after recent SH, and whether this could serve as a monitoring biomarker in clinical trials aimed at preventing rebleeding in these lesions...
August 9, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28790311/plasmonic-silver-nanoshells-for-drug-and-metabolite-detection
#8
Lin Huang, Jingjing Wan, Xiang Wei, Yu Liu, Jingyi Huang, Xuming Sun, Ru Zhang, Deepanjali D Gurav, Vadanasundari Vedarethinam, Yan Li, Ruoping Chen, Kun Qian
In-vitro metabolite and drug detection rely on designed materials-based analytical platforms, which are universally used in biomedical research and clinical practice. However, metabolic analysis in bio-samples needs tedious sample preparation, due to the sample complexity and low molecular abundance. A further challenge is to construct diagnostic tools. Herein, we developed a platform using silver nanoshells. We synthesized SiO2@Ag with tunable shell structures by multi-cycled silver mirror reactions. Optimized nanoshells achieved direct laser desorption/ionization mass spectrometry in 0...
August 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28781914/will-clinical-parameters-reliably-predict-external-ventricular-drain-associated-ventriculitis-is-frequent-routine-cerebrospinal-fluid-surveillance-necessary
#9
Omid Hariri, Saman Farr, Shokry Lawandy, Bailey Zampella, Dan Miulli, Javed Siddiqi
BACKGROUND: The placement of an external ventricular drain (EVD) for monitoring and treatment of increased intracranial pressure is not without risk, particularly for the development of associated ventriculitis. The goal of this study was to investigate whether changes in cerebrospinal fluid (CSF), serum, or clinical parameters are correlated with the development of ventriculitis before it occurs, allowing for the determination of optimal timing of CSF collection. METHODS: An observational retrospective study was conducted between January 2006 and May 2012...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28780790/-value-of-early-stage-cerebral-oxygen-utilization-coefficient-in-predicting-delayed-encephalopathy-after-acute-carbon-monoxide-poisoning
#10
Q Liu, W Li, N Li, Q M Xiao, J Q He, W Z Wang, H N Qi, P Wang
Objective: To investigate the dynamic change in cerebral oxygen utilization coefficient (O(2)UCc) in the early stage of acute severe carbon monoxide poisoning (ASCMP) and its value in predicting delayed encephalopathy after acute carbon monoxide poisoning (DEACMP) . Methods: A prospective observational study was conducted for patients with ASCMP who were admitted to our hospital from November 2013 to March 2016, and their baseline features and physiological parameters were recorded. Observation ended at two months after acute poisoning; according to the presence or absence of DEACMP, the patients were divided into DEACMP group with 21 patients and non-DEACMP group with 64 patients...
May 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28780602/executive-function-after-exhaustive-exercise
#11
Mizuki Sudo, Takaaki Komiyama, Ryo Aoyagi, Toshiya Nagamatsu, Yasuki Higaki, Soichi Ando
PURPOSE: Findings concerning the effects of exhaustive exercise on cognitive function are somewhat equivocal. The purpose of this study was to identify physiological factors that determine executive function after exhaustive exercise. METHODS: Thirty-two participants completed the cognitive tasks before and after an incremental exercise until exhaustion (exercise group: N = 18) or resting period (control group N = 14). The cognitive task was a combination of a Spatial Delayed-Response (Spatial DR) task and a Go/No-Go task, which requires executive function...
August 5, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28779955/fluid-resuscitation-in-septic-patients-improves-systolic-but-not-diastolic-middle-cerebral-artery-flow-velocity
#12
Annika A de Goede, Bert G Loef, Auke C Reidinga, Arjen Schaafsma
To investigate the effects of fluid resuscitation on cerebral hemodynamics in sepsis, the following set of transcranial Doppler (TCD) parameters was used: maximal change in flow velocity (FV) during stroke onset (acc), maximal FV during first (sys1) or second (sys2) phase of systole and mean diastolic FV (dias@560). We aim to evaluate changes in cerebral hemodynamics that result from (i) sepsis and (ii) adequate fluid resuscitation in critically ill septic patients. In the majority of 16 septic patients sys2 was initially absent but reappeared during the period of fluid resuscitation; whereas sys2 absence was never seen in healthy controls...
August 2, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28775140/predictors-for-cerebral-edema-in-acute-ischemic-stroke-treated-with-intravenous-thrombolysis
#13
Magnus Thorén, Elsa Azevedo, Jesse Dawson, Jose A Egido, Anne Falcou, Gary A Ford, Staffan Holmin, Robert Mikulik, Jyrki Ollikainen, Nils Wahlgren, Niaz Ahmed
BACKGROUND AND PURPOSE: Cerebral edema (CED) is a severe complication of acute ischemic stroke. There is uncertainty regarding the predictors for the development of CED after cerebral infarction. We aimed to determine which baseline clinical and radiological parameters predict development of CED in patients treated with intravenous thrombolysis. METHODS: We used an image-based classification of CED with 3 degrees of severity (less severe CED 1 and most severe CED 3) on postintravenous thrombolysis imaging scans...
August 3, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28774294/temperature-variability-in-the-day-night-cycle-is-associated-with-further-intracranial-pressure-during-therapeutic-hypothermia
#14
Adriano Barreto Nogueira, Eva Annen, Oliver Boss, Faraneh Farokhzad, Christopher Sikorski, Emanuela Keller
BACKGROUND: To assess whether circadian patterns of temperature correlate with further values of intracranial pressure (ICP) in severe brain injury treated with hypothermia. METHODS: We retrospectively analyzed temperature values in subarachnoid hemorrhage patients treated with hypothermia by endovascular cooling. The circadian patterns of temperature were correlated with the mean ICP across the following day (ICP24). RESULTS: We analyzed data from 17 days of monitoring of three subarachnoid hemorrhage patients that underwent aneurysm coiling, sedation and hypothermia due to refractory intracranial hypertension and/or cerebral vasospasm...
August 3, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28772198/cerebral-regional-oxygen-saturation-trends-in-infants-with-hypoxic-ischemic-encephalopathy
#15
Siddharth V Jain, Lindsay Pagano, Maria Gillam-Krakauer, James C Slaughter, Sumit Pruthi, Barbara Engelhardt
BACKGROUND: Neurological outcomes in neonatal hypoxic-ischemic encephalopathy (HIE) continue to be sub-optimal despite therapeutic hypothermia (TH). Cerebral near-infrared spectroscopy provides real-time regional oxygen saturation (CrSO2) that may be a marker of adverse MRI findings and neurodevelopmental outcomes. AIM: The aim of this study was to examine the value of CrSO2 monitoring in infants with HIE undergoing TH. STUDY DESIGN AND SUBJECTS: In this prospective study, CrSO2 was continuously recorded in 21 infants with HIE admitted for TH...
July 31, 2017: Early Human Development
https://www.readbyqxmd.com/read/28769866/eye-control-deficits-coupled-to-hand-control-deficits-eye-hand-incoordination-in-chronic-cerebral-injury
#16
John-Ross Rizzo, James K Fung, Maryam Hosseini, Azadeh Shafieesabet, Edmond Ahdoot, Rosa M Pasculli, Janet C Rucker, Preeti Raghavan, Michael S Landy, Todd E Hudson
It is widely accepted that cerebral pathology can impair ocular motor and manual motor control. This is true in indolent and chronic processes, such as neurodegeneration and in acute processes such as stroke or those secondary to neurotrauma. More recently, it has been suggested that disruptions in these control systems are useful markers for prognostication and longitudinal monitoring. The utility of examining the relationship or the coupling between these systems has yet to be determined. We measured eye and hand-movement control in chronic, middle cerebral artery stroke, relative to healthy controls, in saccade-to-reach paradigms to assess eye-hand coordination...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28769857/hyperventilation-therapy-for-control-of-posttraumatic-intracranial-hypertension
#17
REVIEW
Daniel Agustín Godoy, Ali Seifi, David Garza, Santiago Lubillo-Montenegro, Francisco Murillo-Cabezas
During traumatic brain injury, intracranial hypertension (ICH) can become a life-threatening condition if it is not managed quickly and adequately. Physicians use therapeutic hyperventilation to reduce elevated intracranial pressure (ICP) by manipulating autoregulatory functions connected to cerebrovascular CO2 reactivity. Inducing hypocapnia via hyperventilation reduces the partial pressure of arterial carbon dioxide (PaCO2), which incites vasoconstriction in the cerebral resistance arterioles. This constriction decrease cerebral blood flow, which reduces cerebral blood volume and, ultimately, decreases the patient's ICP...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28768822/intravenous-immunoglobulin-for-maintenance-treatment-of-chronic-inflammatory-demyelinating-polyneuropathy-a-multicentre-open-label-52-week-phase-iii-trial
#18
Satoshi Kuwabara, Masahiro Mori, Sonoko Misawa, Miki Suzuki, Kazutoshi Nishiyama, Tatsuro Mutoh, Shizuki Doi, Norito Kokubun, Mikiko Kamijo, Hiroo Yoshikawa, Koji Abe, Yoshihiko Nishida, Kazumasa Okada, Kenji Sekiguchi, Ko Sakamoto, Susumu Kusunoki, Gen Sobue, Ryuji Kaji
OBJECTIVE: Short-term efficacy of induction therapy with intravenous immunoglobulin (Ig) in patients with chronic inflammatory demyelinating polyneuropathy (CIDP) is well established. However, data of previous studies on maintenance therapy were limited up to 24-week treatment period. We aimed to investigate the efficacy and safety of longer-term intravenous Ig therapy for 52 weeks. METHODS: This study was an open-label phase 3 clinical trial conducted in 49 Japanese tertiary centres...
August 2, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28762701/epilepsy-treatment-options
#19
REVIEW
Gerald Liu, Nicole Slater, Allen Perkins
The occurrence of a single seizure does not always require initiation of antiepileptic drugs. Risk of recurrent seizures should guide their use. In adults, key risk factors for recurrence are two unprovoked seizures occurring more than 24 hours apart, epileptiform abnormalities on electroencephalography, abnormal brain imaging, nocturnal seizures, or an epileptic syndrome associated with seizures. In children, key risk factors are abnormal electroencephalography results, an epileptic syndrome associated with seizures, severe head trauma, and cerebral palsy...
July 15, 2017: American Family Physician
https://www.readbyqxmd.com/read/28762185/consideration-of-the-intracranial-pressure-threshold-value-for-the-initiation-of-traumatic-brain-injury-treatment-a-xenon-ct-and-perfusion-ct-study
#20
Mitsuru Honda, Ryo Ichibayashi, Ginga Suzuki, Hiroki Yokomuro, Yoshikatsu Seiki, Shigeru Sase, Taichi Kishi
BACKGROUND: Monitoring of intracranial pressure (ICP) is considered to be fundamental for the care of patients with severe traumatic brain injury (TBI) and is routinely used to direct medical and surgical therapy. Accordingly, some guidelines for the management of severe TBI recommend that treatment be initiated for ICP values >20 mmHg. However, it remained to be accounted whether there is a scientific basis to this instruction. The purpose of the present study was to clarify whether the basis of ICP values >20 mmHg is appropriate...
July 31, 2017: Neurocritical Care
keyword
keyword
59233
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"