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Hypertension intracranial review

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https://www.readbyqxmd.com/read/28716667/pupillometric-evaluation-of-the-melanopsin-containing-retinal-ganglion-cells-in-mitochondrial-and-non-mitochondrial-optic-neuropathies
#1
Shakoor Ba-Ali, Henrik Lund-Andersen
In recent years, chromatic pupillometry is used in humans to evaluate the activity of melanopsin expressing intrinsic photosensitive retinal ganglion cells (ipRGCs). Blue light is used to stimulate the ipRGCs and red light activates the rod/cone photoreceptors. The late re-dilation phase of pupillary light reflex is primarily driven by the ipRGCs. Optic neuropathies i.e. Leber hereditary optic neuropathy (LHON), autosomal dominant optic atrophy (ADOA), nonarteritic anterior ischemic optic neuropathy (NAION), glaucoma, optic neuritis and idiopathic intracranial hypertension (IIH) are among the diseases, which have been subject to pupillometric studies...
July 14, 2017: Mitochondrion
https://www.readbyqxmd.com/read/28712906/a-comparison-of-pharmacologic-therapeutic-agents-used-for-the-reduction-of-intracranial-pressure-following-traumatic-brain-injury
#2
REVIEW
Ahmed M Alnemari, Brianna M Krafcik, Tarek R Mansour, Daniel Gaudin
OBJECTIVE: In neurotrauma care, a better understanding of treatments following traumatic brain injury (TBI) has led to a significant decrease in morbidity and mortality in this population. TBI represents a significant medical problem, and complications following TBI are associated with the initial injury and post-event intracranial processes such as elevated intracranial pressure (ICP) and brain edema. Consequently, appropriate therapeutic interventions are required to reduce brain tissue damage and improve cerebral perfusion...
July 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28711538/cerebral-venous-sinus-thrombosis-secondary-to-idiopathic-hypertrophic-cranial-pachymeningitis-a-case-report-and-review-of-the-literature
#3
Kaiyuan Huang, Qingsheng Xu, Yuankun Ma, Renya Zhan, Jian Shen, Jianwei Pan
BACKGOUND AND IMPORTANCE: Idiopathic hypertrophic cranial pachymeningitis (IHCP) is a rare fibrosing inflammatory process involving the dura mater. Currently, there is no consensus on the treatments for IHCP, and the usefulness of immunosuppressive agents as a first-line option remains controversial. Cerebral venous sinus occlusion (CVSO) and cerebral venous sinus thrombosis (CVST) secondary to IHCP, which may cause progressive intracranial hypertension and venous obstructive parenchymal lesions, make the diagnosis and treatment of IHCP more complicated...
July 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28705815/sigmoid-sinus-diverticulum-dehiscence-and-venous-sinus-stenosis-potential-causes-of-pulsatile-tinnitus-in-patients-with-idiopathic-intracranial-hypertension
#4
J A Lansley, W Tucker, M R Eriksen, P Riordan-Eva, S E J Connor
BACKGROUND AND PURPOSE: Pulsatile tinnitus is experienced by most patients with idiopathic intracranial hypertension. The pathophysiology remains uncertain; however, transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence have been proposed as potential etiologies. We aimed to determine whether the prevalence of transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence was increased in patients with idiopathic intracranial hypertension and pulsatile tinnitus relative to those without pulsatile tinnitus and a control group...
July 13, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28682033/-adpkd-and-heart
#5
Francesca Liut, Claudia Izzi, Nadia Dallera, Francesco Scolari
Autosomal Polycystic Kidney Disease ( ADPKD) is the most common inherited renal disease. ADPKD is caused by mutations in PKD1 and PKD2, encoding polycystin 1 and 2, respectively. ADPKD is a systemic disease, with renal and extrarenal involvement. Renal disease is characterized by formation and growth of cysts, with progressive destruction of renal parenchyma and development of End Stage Renal Disease (ESRD) in about 50% of affected individuals at the age of 60 years. Extrarenal disease usually involves the liver, heart and vasculature...
March 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28670797/cerebral-pulsatility-index-is-elevated-in-patients-with-elevated-right-atrial-pressure
#6
Shouri Lahiri, Konrad H Schlick, Matthew M Padrick, Brenda Rinsky, Nestor Gonzalez, Heather Jones, Stephan A Mayer, Patrick D Lyden
BACKGROUND AND PURPOSE: Extracerebral venous congestion can precipitate intracranial hypertension due to obstruction of cerebral blood outflow. Conditions that increase right atrial pressure, such as hypervolemia, are thought to increase resistance to jugular venous outflow and contribute to cerebro-venous congestion. Cerebral pulsatility index (CPI) is considered a surrogate marker of distal cerebrovascular resistance and is elevated with intracranial hypertension. Thus, we sought to test the hypothesis that elevated right atrial pressure is associated with increased CPI compared to normal right atrial pressure...
July 3, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28663268/increased-curvature-of-the-tentorium-cerebelli-in-idiopathic-intracranial-hypertension
#7
P P Morris, N Lachman, D F Black, R A Carter, J Port, N Campeau
BACKGROUND AND PURPOSE: Transverse sinus effacement is detectable on MRV examinations in almost all patients with idiopathic intracranial hypertension. This effacement of the transverse sinus is presumed to be mediated by elevation of intracranial pressure, resulting in compression and inward collapse of the dural margins of the sinus. We sought to establish whether supratentorial broad-based downward deformity of the tentorium might explain transverse sinus effacement in idiopathic intracranial hypertension...
June 29, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28640657/retinal-findings-on-oct-in-systemic-conditions
#8
Preeti Patil Chhablani, Vikas Ambiya, Akshay G Nair, Sailaja Bondalapati, Jay Chhablani
PURPOSE: Imaging technology has advanced by leaps and bounds in the recent past and has resulted in a much greater understanding of ocular diseases. The aim of this review article is to summarize optical coherence tomography (OCT) findings of various systemic conditions. METHOD: A systematic literature search of the Medline/PubMed database was performed. English articles up to April 2015 were included. Terms used for search included: Alzheimer's Disease; Multiple Sclerosis; Parkinson's Disease; Behçet's Disease; Schizophrenia; Migraine; Obstructive Sleep Apnea Syndrome; Neurofibromatosis; Sickle Cell Disease; Renal diseases; Lupus Retinopathy; Valsalva Retinopathy; Whiplash Retinopathy; Shaken-Baby Syndrome; Choroidal metastases; Intracranial Hypertension; Drug toxicity; Deferoxamine; Sildenafil; Tamoxifen; Hydroxychloroquine; Chloroquine; Ethambutol; Lead; Sickle Cell Disease; and Thalassemia along with OCT...
June 22, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/28637822/pattern-of-pressure-gradient-alterations-after-venous-sinus-stenting-for-idiopathic-intracranial-hypertension-predicts-stent-adjacent-stenosis-a-proposed-classification-system
#9
Daniel Raper, Thomas J Buell, Dale Ding, Ching-Jen Chen, Robert M Starke, Kenneth C Liu
OBJECTIVE: Venous sinus stenting (VSS) is a safe and effective treatment for idiopathic intracranial hypertension (IIH) with angiographic venous sinus stenosis. However, predictors of stent-adjacent stenosis (SAS) remain poorly defined. METHODS: We performed a retrospective review of 47 patients with IIH and intracranial venous stenosis who underwent VSS with pre- and post-stent venography. Patient characteristics, treatments and outcomes were reviewed. Changes in pressure gradient after VSS were classified according to pattern of gradient resolution into types I-III...
June 21, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28600075/corrigendum-to-optic-nerve-sheath-fenestration-for-idiopathic-intracranial-hypertension-a-seven-year-review-of-visual-outcomes-in-a-tertiary-centre-clin-neurol-neurosurg-137-october-2015-94-101
#10
E E Obi, B K Lakhani, J Burns, R Sampath
No abstract text is available yet for this article.
June 6, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28599841/changing-paradigm-in-the-management-of-elderly-patients-with-intracranial-aneurysms-an-institutional-review
#11
Oleg Y Chernyshev, Shyamal C Bir, Tanmoy K Maiti, Devi Prasad Patra, Cesar Liendo, Hugo Cuellar, Alireza Minagar, Anil Nanda
Optimal treatment of intracranial aneurysms (IAs) in elderly patients has not yet been well established. We have investigated the clinical and radiological outcomes and predictors of unfavorable outcome of IAs in elderly patients. Radiological and clinical data of 85 elderly patients from 2010 through 2015 were retrospectively reviewed. Significant differences between the groups were determined by a chi-square test. Regression analysis was performed to identify the predictors of unfavorable outcome. Among the 85 patients with IAs, the number of patients with >7mm size aneurysm (p=0...
June 6, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28562736/bariatric-surgery-as-a-treatment-for-pseudotumor-cerebri-case-study-and-narrative-review-of-the-literature
#12
Everton Cazzo, Martinho Antonio Gestic, Murillo Pimentel Utrini, Felipe David Mendonça Chaim, Fábio Henrique Mendonça Chaim, Elaine Cristina Cândido, Luciana Bueno da Silveira Jarolavsky, Ana Maria Neder de Almeida, José Carlos Pareja, Elinton Adami Chaim
CONTEXT: Pseudotumor cerebri occurs when there is an increase in intracranial pressure without an underlying cause, usually leading to loss of vision. It is most commonly observed in obese women of child-bearing age. CASE REPORT: A 46-year-old woman presented at our service with idiopathic intracranial hypertension that had been diagnosed two years earlier, which had led to chronic refractory headache and an estimated 30% loss of visual acuity, associated with bilateral papilledema...
May 29, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28553032/stroke-in-patients-with-chronic-kidney-disease%C3%A2-how-do-we-approach-and-manage-it
#13
REVIEW
S Nayak-Rao, M P Shenoy
Renal failure is a potent risk factor for stroke, which is a leading cause of morbidity and mortality worldwide. The risk of stroke is 5-30 times higher in patients with chronic kidney disease (CKD), especially on dialysis. Case fatality rates are also higher reaching almost 90%. It is therefore important to understand the factors that predispose to stroke in this vulnerable population to better apply preventive strategies. The heightened risk of stroke in CKD represents the interplay of the vascular co-morbidities that occur with renal impairment and factors specific to renal failure such as malnutrition-inflammation-atherosclerosis complex, the effect of uremic toxins, dialysis techniques, vascular access, and the use of anticoagulants to maintain flow in the extracorporeal circuit...
May 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28537352/is-pseudotumor-cerebri-an-unusual-expression-of-chiari-syndrome-a-case-report-and-review-of-the-literature
#14
Paolo Pacca, Roberto Altieri, Francesco Zenga, Diego Garbossa, Alessandro Ducati, Michele Lanotte
The Chiari I malformation (CM-I) is a developmental alteration of the posterior cranial fossa (PCF), radiographically defined as the descent of the cerebellar tonsils = 5 mm below the foramen magnum (FM) inside the cervical canal. Headache is the most frequent symptom associated with CM-I. The association of CM-I and neurological symptoms configures with Chiari syndrome. A rare symptom associated with Chiari syndrome is intracranial hypertension syndrome with cephalea and papilloedema-the typical findings of pseudotumor cerebri (PTC)...
May 24, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28534259/the-efficacy-of-orbital-ultrasonography-and-magnetic-resonance-imaging-findings-with-direct-measurement-of-intracranial-pressure-in-distinguishing-papilledema-from-pseudopapilledema
#15
Zeynep Ozturk, Tuba Atalay, Ebru Arhan, Kursad Aydin, Ayse Serdaroglu, Tugba Hirfanoglu, Cengiz Havali, Yilmaz Akbas, Duygu Yalinbas
INTRODUCTION: The goal of this study was to evaluate the utility of orbital ultrasonography and magnetic resonance imaging in the diagnosis of idiopathic intracranial hypertension (IIH). METHOD: We reviewed the medical records of patients referred to our department for suspected IIH. RESULTS: Seven children were diagnosed with IIH. Nine children revealed pseudopapilledema by optic coherence tomography and/or orbital ultrasonography. When the axial sequences were reexamined, patients with papilledema had optic nerve sheath (ONS) enlargement (6...
May 22, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28516363/posterior-reversible-encephalopathy-syndrome-presenting-in-the-anterior-circulation-with-malignant-intracranial-hypertension-requiring-surgical-decompression-a-case-report-and-literature-review
#16
S Hernández-Durán, A Barrantes-Freer, V Rohde, C von der Brelie
Posterior reversible encephalopathy syndrome (PRES) is thought to result from endothelial dysfunction and breakdown of the blood-brain barrier with subsequent vasogenic edema. Abrupt hypertension has been identified as one of its risk factors. We present a rare case of PRES in the anterior circulation with sudden onset of left hemiparesis and rapid neurological deterioration on the basis of hypertensive crisis. Due to refractory intracranial hypertension, the patient required emergent right decompressive craniectomy...
July 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28512741/intervention-for-elevated-intracranial-pressure-improves-success-rate-after-repair-of-spontaneous-cerebrospinal-fluid-leaks
#17
William Teachey, Jessica Grayson, Do-Yeon Cho, Kristen O Riley, Bradford A Woodworth
OBJECTIVES/HYPOTHESIS: Spontaneous cerebrospinal fluid (CSF) leaks are associated with increased intracranial pressure (ICP) and considered a manifestation of idiopathic intracranial hypertension. Although postoperative acetazolamide and placement of CSF shunt systems are considered valuable interventions for elevated ICP, the impact on recurrence rate remains unclear. The objective of this study was to systematically review evidence from reported literature to evaluate whether postoperative ICP management reduces recurrence rates after primary endoscopic repair...
May 16, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28489610/invasive-and-noninvasive-means-of-measuring-intracranial-pressure-a-review
#18
Xuan Zhang, Joshua Medow, Bermans Iskandar, Fa Wang, Mehdi Shokoueinejad, Joyce Koueik, John Webster
Measurement of intracranial pressure (ICP) can be invaluable in the management of critically ill patients. Cerebrospinal fluid (CSF) is produced by the choroid plexus in the brain ventricles (a set of communicating chambers), after which it circulates through the different ventricles and exits into the subarachnoid space (SAS) around the brain, where it is reabsorbed into the venous system. If the fluid does not drain out of the brain or get reabsorbed, the ICP increases, which may lead to brain damage or death...
May 10, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28483156/-bilateral-papilledema
#19
REVIEW
M-B Rougier
This article will review the current standard of care in the diagnosis and management of bilateral optic disc edema. Two emergent conditions must be considered first: secondary intracranial hypertension (cerebral tumor, cerebral thrombophlebitis…) and arteritic ischemic optic neuropathy (or giant cell arteritis). Having ruled out these two diagnoses, the management follows various steps in order to: (i) rule out pseudo-edema, and (ii) determine the underlying cause of the edema: papilledema, non-arteritic ischemic optic neuropathy or papillitis...
May 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28480112/nontraumatic-posterior-circulation-pseudoaneurysm-of-the-basilar-artery-summit-with-complete-spontaneous-resolution-case-report-and-literature-review
#20
Nefize Turan, Shannon Butler, Theodore C Larson, Alexander Mason
BACKGROUND: Intracranial pseudoaneurysms are rare vascular defects of arterial walls that are classically the result of traumatic injury, iatrogenic causes, or infection. Idiopathic pseudoaneurysms are seen even less frequently and are often related to atherosclerosis. Pseudoaneurysms are most commonly found along the distal wall of the internal carotid artery, however, can occur at any location in the cerebrovascular circulation. Treatment of these arterial defects is often challenging due to their frail nature...
2017: Surgical Neurology International
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