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Intra-cranial pressure

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https://www.readbyqxmd.com/read/28705994/wearable-brain-imaging-with-multi-modal-physiological-recording
#1
Gary E Strangman, Vladimir Ivkovic, Quan Zhang
The brain is a central component of cognitive and physical human performance. Measures including functional brain activation, cerebral perfusion, cerebral oxygenation, evoked electrical responses, and resting hemodynamic and electrical activity are all related to, or can predict health status or performance decrements. However, measuring brain physiology typically requires large, stationary machines that are not suitable for mobile or self-monitoring. Moreover, when individuals are ambulatory, systemic physiological fluctuations-e...
July 13, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28675537/evaluation-of-pelvic-floor-kinematics-in-continent-and-incontinent-women-during-running-an-exploratory-study
#2
Monika Leitner, Helene Moser, Patric Eichelberger, Annette Kuhn, Jean-Pierre Baeyens, Lorenz Radlinger
AIMS: Impact activity like running is associated with an increase in intra-abdominal pressure which needs to be sufficiently countered by pelvic floor muscle (PFM) activity to secure continence. The aim of this study was to investigate and compare PFM kinematics in continent and incontinent women during running. METHOS:  Three-dimensional position and orientation was measured with the electromagnetic tracking device trakSTAR™. One sensor was attached to the vaginal probe and a second one was secured to the subjects' skin at the height of the second sacral vertebrae...
July 4, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28669033/monitoring-the-brain-after-cardiac-arrest-a-new-era
#3
REVIEW
Niraj Sinha, Sam Parnia
PURPOSE OF REVIEW: Of the approximately 350,000 out-of-hospital, and 750,000 after in-hospital cardiac arrest (CA) events in the US annually approximately 5-9% and 20% respectively may achieve return of spontaneous circulation (ROSC) after attempted cardiopulmonary resuscitation (CPR). Up to 2/3 of these initial survivors may go on die in the subsequent 24-72 hours after ROSC due to a combination of (1) on-going cerebral injury, (2) myocardial dysfunction and (3) massive systemic inflammatory response...
August 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28663374/extra-and-intra-cranial-blood-flow-regulation-during-the-cold-pressor-test-influence-of-age
#4
Daniela Flück, Philip N Ainslie, Anthony R Bain, Kevin W Wildfong, Laura Emily Morris, James P Fisher
We determined how the extra- and intra-cranial circulations respond to generalized sympathetic activation evoked by a cold pressor test (CPT) and whether this was affected by healthy aging. Ten young (23±2 yr; mean±SD) and nine older (66±3 yr) individuals performed a 3-min CPT by immersing the left foot into 0.8±0.3°C water. Common carotid artery (CCA) and internal carotid artery (ICA) diameter, velocity and flow were simultaneously measured (duplex ultrasound), along with middle cerebral artery and posterior cerebral artery mean blood velocity (MCAvmean and PCAvmean), and cardiorespiratory variables...
June 29, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28643039/primary-intraventricular-meningiomas-in-children-experience-of-two-cases-with-review-of-literature
#5
Kapil D Muley, Salman T Shaikh, Chandrashekhar E Deopujari, Uday B Andar
Meningiomas are rare in the pediatric age group, more so in the intraventricular location. They arise in the lateral ventricles from the arachnoid cells contained within the choroid plexus, in the third ventricle from the velum interpositum and in the fourth ventricle from the choroids. These tumors are usually large and have an aggressive behaviour. Surgical management of intra-ventricular meningiomas is challenging because of their deep location, large size at presentation and increased vascularity. The authors report two such cases who presented with symptoms of raised intra cranial pressure and on evaluation were found to have associated hydrocephalus...
June 22, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28642867/evaluation-of-the-effect-of-a-single-intra-articular-injection-of-allogeneic-neonatal-mesenchymal-stromal-cells-compared-to-oral-non-steroidal-anti-inflammatory-treatment-on-the-postoperative-musculoskeletal-status-and-gait-of-dogs-over-a-6-month-period-after
#6
Mathieu Taroni, Quentin Cabon, Marine Fèbre, Thibaut Cachon, Nathalie Saulnier, Claude Carozzo, Stéphane Maddens, Fabrice Labadie, Clément Robert, Eric Viguier
OBJECTIVE: Compare the clinical and pressure walkway gait evolution of dogs after a tibial plateau leveling osteotomy (TPLO) for a cranial cruciate ligament rupture (CrCLR) and treatment with either a 1-month course of non-steroidal anti-inflammatory drugs (NSAIDs) or a single postoperative intra-articular (IA) injection of allogeneic neonatal mesenchymal stromal cells (MSCs). STUDY DESIGN: Prospective, double-blinded, randomized, controlled, monocentric clinical study...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28631971/rapidly-progressive-dementia-an-unusual-cause
#7
Aastha Takkar, Veenu Singla, Manish Modi, Vivek Gupta, Manoj K Goyal, Vivek Lal
Brain metastases are known to be present with a history of increased intra-cranial pressure headache, seizures or altered sensorium. Corresponding to the clinical brain metastases are the most feared complication of a systemic cancer. Classically, brain metastases are associated with significant morbidity and are known to present with a history of increased intracranial pressure headache, seizures or altered sensorium. Neuroimaging is usually suggestive of massive peri-lesional edema and mass effect surrounding the space occupying lesions...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28549600/novel-instrumented-probe-for-measuring-3d-pressure-distribution-along-the-vaginal-canal
#8
Licia P Cacciari, Anice C Pássaro, Amanda C Amorim, Manfred Geuder, Isabel C N Sacco
We developed an intravaginal instrumented probe (covered with a 10×10 matrix of capacitive sensors) for assessing the three-dimensional (3D) spatiotemporal pressure profile of the vaginal canal. The pressure profile was compared to the pelvic floor (PF) digital assessment, and the reliability of the instrument and repeatability of the protocol was tested. We also tested its ability to characterize and differentiate two tasks: PF maximum contraction and Valsalva maneuver (maximum intra-abdominal effort with downward movement of the PF)...
May 15, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28526462/-sudden-motor-and-sensorial-loss-due-to-retroperitoneal-hematoma-during-postoperative-periods-a-case-report
#9
Pelin Şen, Havva Gül Gültekin, İsmail Caymaz, Ömer Özel, Ayda Türköz
A 68 year-old male patient was hospitalized for radical prostatectomy. He had no abnormal medical history including neurological deficit before the operation. Prior to general anesthesia, an epidural catheter was inserted in the L3-4 interspace for intraoperative and postoperative analgesia. After surgery for nine hours, he developed confusion and flaccid paralysis of bilateral lower extremities occurred. No pathology was detected from cranial computed tomography and diffusion magnetic resonance imaging no pathology was detected...
May 16, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28255529/calcified-middle-cranial-fossa-mass
#10
James Botros, Kimmo Hatanpaa, Brandon Isaacson, Samuel L Barnett
A 21-year-old male presented for evaluation of transient loss of consciousness and was found to have a hyperdense mass in the left middle fossa. He underwent craniotomy for tumor resection. Intra- and extradural invasion was noted. Gross total resection was achieved. Pathology demonstrated a densely cellular neoplasm with predominately spindle cell morphology in a collagen-containing stroma, areas of vascular proliferation, focal mineralization, and regions of cartilage formation. High mitotic index and regions of necrosis were seen...
January 2017: Journal of Neurological Surgery Reports
https://www.readbyqxmd.com/read/28241107/technical-note-development-of-a-cranial-phantom-for-assessing-perfusion-diffusion-and-biomechanics
#11
Naoki Ohno, Tosiaki Miyati, Tomohiro Chigusa, Hikari Usui, Shota Ishida, Yuki Hiramatsu, Satoshi Kobayashi, Toshifumi Gabata, Noam Alperin
PURPOSE: A novel cranial phantom was developed to simulate the relationships among factors such as blood perfusion, water diffusion, and biomechanics in intracranial tissue. METHODS: The cranial phantom consisted of a high-density polypropylene filter (mimicking brain parenchyma) with intra- and extrafilter spaces (mimicking cerebral artery and vein, respectively), and a capacitor space (mimicking the cerebrospinal fluid space). Pulsatile and steady flow with different flow rates were applied to the cranial phantom using a programmable pump...
February 27, 2017: Medical Physics
https://www.readbyqxmd.com/read/27909604/effects-of-head-position-on-cerebral-oxygenation-and-blood-flow-velocity-during-thyroidectomy
#12
Ayten Saraçoğlu, Demet Altun, Ayşen Yavru, Nihat Aksakal, İsmail Cem Sormaz, Emre Camcı
OBJECTIVE: Determining the blood flow through intra and extra-cranial arteries during neck extension may be helpful but is a controversial issue. We aimed to elucidate the changes in cerebral blood flow related to head positioning during thyroid surgery by carotid Doppler examination and regional oxygen saturation variations. METHODS: Thirty patients were recruited to the study. Patients were positioned with a final position of thyroidectomy consisting a 30° semi Fowler with the extension of neck and head...
October 2016: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/27836704/perioperative-risk-assessment-of-patients-with-gliomatosis-cerebri
#13
Nir Shimony, Ben Shofty, Zvi Ram, Rachel Grossman
BACKGROUND: Gliomatosis cerebri is a rare diffusely infiltrating malignant glial neoplasm. Presenting symptoms include seizures, neurologic deficits, and frequently symptoms related to increased intracranial pressure (ICP). Surgical intervention, including brain biopsy, may induce worsening of these neurologic symptoms. We reviewed our database to identify prognostic and risk factors for perioperative deterioration specifically associated with elevated ICP. METHODS: Between 2006 and 2014, 78 patients were treated for gliomatosis cerebri...
February 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27832503/estimating-the-accuracy-of-optic-nerve-sheath-diameter-measurement-using-a-pocket-sized-handheld-ultrasound-on-a-simulation-model
#14
Garrett G R J Johnson, Frederick A Zeiler, Bertram Unger, Gregory Hansen, Dimitrios Karakitsos, Lawrence M Gillman
BACKGROUND: Ultrasound measurement of optic nerve sheath diameter (ONSD) appears to be a promising, rapid, non-invasive bedside tool for identification of elevated intra-cranial pressure. With improvements in ultrasound technology, machines are becoming smaller; however, it is unclear if these ultra-portable handheld units have the resolution to make these measurements precisely. In this study, we estimate the accuracy of ONSD measurement in a pocket-sized ultrasound unit. METHODS: Utilizing a locally developed, previously validated model of the eye, ONSD was measured by two expert observers, three times with two machines and on five models with different optic nerve sheath sizes...
December 2016: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/27810603/overdrainage-after-ventriculoperitoneal-shunting-in-a-patient-with-a-wide-depressed-skull-bone-defect-the-effect-of-atmospheric-pressure-gradient
#15
Lixiang Zhou, Jinlu Yu, Lichao Sun, Yanwu Han, Guangming Wang
INTRODUCTION: In patients with traumatic brain injury, an effective approach for managing refractory intracranial hypertension is wide decompressive craniectomy. Postoperative hydrocephalus is a frequent complication requiring cerebrospinal fluid (CSF) diversion. PRESENTATION OF CASE: A 50-year-old male who underwent decompressive craniectomy after traumatic brain injury. He developed hydrocephalus postoperatively, and accordingly we placed a ventriculoperitoneal shunt...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27672280/clinical-management-of-acute-liver-failure-results-of-an-international-multi-center-survey
#16
MULTICENTER STUDY
Liane Rabinowich, Julia Wendon, William Bernal, Oren Shibolet
AIM: To assess the practice of caring for acute liver failure (ALF) patients in varying geographic locations and medical centers. METHODS: Members of the European Acute Liver Failure Consortium completed an 88-item questionnaire detailing management of ALF. Responses from 22 transplantation centers in 11 countries were analyzed, treating between 300 and 500 ALF cases and performing over 100 liver transplants (LT) for ALF annually. The questions pertained to details of the institution and their clinical activity, standards of care, referral and admission, ward- based care versus intensive care unit (ICU) as well as questions regarding liver transplantation - including criteria, limitations, and perceived performance...
September 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27644335/telemetric-intra-cranial-pressure-monitoring-clinical-and-financial-considerations
#17
James M Barber, Catherine J Pringle, Helen Raffalli-Ebezant, Omar Pathmanaban, Roberto Ramirez, Ian D Kamaly-Asl
Intracranial pressure (ICP) measurement is an important diagnostic tool in Neurosurgery. Until relatively recently, conventional monitoring has required that subjects be admitted to a hospital bed and the device is only able to be left in-situ for limited periods of time. We have evaluated a Telemetric ICP monitoring system that has been proven, by several other groups worldwide, to permit rapid, repeated and prolonged ICP measurement, in multiple environments. In our unit, 4 patients have been implanted to-date, between the ages of 4 and 16, manifesting a wide range of complex neurosurgical conditions...
September 19, 2016: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/27537518/comparison-of-nirs-serum-biomarkers-and-muscle-damage-in-a-porcine-balloon-compression-model-of-acute-compartment-syndrome
#18
COMPARATIVE STUDY
Steven C Budsberg, Michael S Shuler, Megan Hansen, Elizabeth Uhl, Brett A Freedman
BACKGROUND: Near-infrared spectroscopy (NIRS) has been shown to aid in the diagnosis of extremity acute compartment syndrome (ACS), offering continuous real-time capability to monitor perfusion in extremities. Porcine models of ACS have been developed to attempt to aid in the understanding of the development of ACS and provide better methods of diagnosing ACS. The objective of the present study was to assess and correlate NIRS, tibial intracompartmental pressure (TICP), tibial intracompartmental perfusion pressure (TIPP), serum markers of inflammation and muscle injury in a balloon compression model of ACS...
November 2016: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/27501699/a-unique-method-for-estimating-the-reliability-learning-curve-of-optic-nerve-sheath-diameter-ultrasound-measurement
#19
Frederick A Zeiler, Markus T Ziesmann, Patrick Goeres, Bertram Unger, Jason Park, Dimitrios Karakitsos, Michael Blaivas, Ashley Vergis, Lawrence M Gillman
BACKGROUND: Optic nerve sheath diameter (ONSD) measurement using ultrasound has been proposed as a rapid, non-invasive, point of care technique to estimate intra-cranial pressure (ICP). Ultrasonic measurement of the optic nerve sheath can be quite challenging and there is limited literature surrounding learning curves for this technique. We attempted to develop a method to estimate the reliability learning curve for ONSD measurement utilizing a unique definition of reliability: a plateau in within-subject variability with unchanged between-subject variability...
December 2016: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/27332553/reduced-leukocyte-infiltration-in-absence-of-eosinophils-correlates-with-decreased-tissue-damage-and-disease-susceptibility-in-%C3%AE-dblgata-mice-during-murine-neurocysticercosis
#20
Pramod K Mishra, Qun Li, Luis E Munoz, Chris A Mares, Elizabeth G Morris, Judy M Teale, Astrid E Cardona
Neurocysticercosis (NCC) is one of the most common helminth parasitic diseases of the central nervous system (CNS) and the leading cause of acquired epilepsy worldwide. NCC is caused by the presence of the metacestode larvae of the tapeworm Taenia solium within brain tissues. NCC patients exhibit a long asymptomatic phase followed by a phase of symptoms including increased intra-cranial pressure and seizures. While the asymptomatic phase is attributed to the immunosuppressive capabilities of viable T. solium parasites, release of antigens by dying organisms induce strong immune responses and associated symptoms...
June 2016: PLoS Neglected Tropical Diseases
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