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https://www.readbyqxmd.com/read/28647659/flow-diverters-as-a-useful-adjunct-to-traditional-endovascular-techniques-in-the-treatment-of-direct-carotid-cavernous-fistulas
#1
Christopher S Ogilvy, Rouzbeh Motiei-Langroudi, Mohammad Ghorbani, Christoph J Griessenauer, Abdulrahman Y Alturki, Ajith J Thomas
BACKGROUND: Direct carotid-cavernous sinus fistulas (CCF) are high flow arteriovenous shunts that are typically the result of a severe head injury. The endovascular treatment of these lesions includes the use of detachable balloons, coils, liquid embolic agents, and covered stents. To minimize the chance of treatment failure and subsequent complications, endoluminal reconstruction using a flow-diverting stent may be added to the treatment construct . METHODS: We present 3 cases and review the existing literature...
June 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28634510/internal-carotid-artery-and-sphenoidal-emissary-vesalian-vein-fistula-mimicking-a-carotid-cavernous-sinus-fistula
#2
Ava L Liberman, Preethi Ramchand, Kimberly Gannon, Eric L Zager, Bryan Pukenas, Aaron L Bress, Michael D Ezekowitz, Robert Hurst, Steven R Messé
No abstract text is available yet for this article.
July 2017: Neurohospitalist
https://www.readbyqxmd.com/read/28634313/-a-case-of-bilateral-traumatic-carotid-cavernous-fistula
#3
Hanae Terashima, Takashi Higa, Koichi Kato, Tadasuke Tominaga, Masanori Nakagawa, Shigeru Kadoyama, Hiroshi Ujiie, Akira Teramoto
Bilateral traumatic carotid-cavernous fistula(CCF)is rare. It is most commonly caused by a direct head or face injury involving the cavernous sinus and develops immediately after trauma. We report a case of bilateral traumatic CCF that occurred as an intracerebral hematoma(ICH)mimicking apoplexy 5 months later. We treated the patient with point occlusion of venous reflux causing an ICH using coil embolization to remove the hematoma. Three days after we performed trans-venous occlusion of the intercavernous connection and right cavernous sinus using coil embolization through the right inferior petrosal vein, it was identified that the left CCF was occluded after first embolization into the left sylvian vein...
June 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28621574/endovascular-plug-for-internal-carotid-artery-occlusion-in-the-management-of-a-cavernous-pseudoaneurysm-with-bifrontal-subdural-empyema-technical-note
#4
Sunil Manjila, Gagandeep Singh, Obinna Ndubuizu, Zoe Jones, Daniel P Hsu, Alan R Cohen
The authors demonstrate the use of an endovascular plug in securing a carotid artery pseudoaneurysm in an emergent setting requiring craniotomy for a concurrent subdural empyema. They describe the case of a 14-year-old boy with sinusitis and bifrontal subdural empyema who underwent transsphenoidal exploration at an outside hospital. An injury to the right cavernous segment of the ICA caused torrential epistaxis. Bleeding was successfully controlled by inflating a Foley balloon catheter within the sphenoid sinus, and the patient was transferred to the authors' institution...
June 16, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28620841/device-based-approaches-for-the-treatment-of-arterial-hypertension
#5
REVIEW
Jens Jordan
Device-based antihypertensive treatments have primarily been developed and clinically tested for patients with hypertension refractory to pharmacological treatment. Most but not all device-based treatments target the sympathetic nervous system and provided important new insight in the mechanisms of human hypertension. This review provides an overview on the scientific rational and clinical data on recent device-based antihypertensive treatment approaches. Device-based treatments targeting the sympathetic nervous system include catheter-based renal nerve ablation, electrical carotid sinus stimulation, modulation of baroreflex transduction through a dedicated carotid stent, carotid body denervation, and deep brain stimulation...
July 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28603683/cavernous-sinus-involvement-by-pituitary-adenomas-clinical-implications-and-outcomes-of-endoscopic-endonasal-resection
#6
Abdulrazag Ajlan, Achal S Achrol, Abdulrahman Albakr, Abdullah H Feroze, Erick M Westbroek, Peter Hwang, Griffith R Harsh
Background  Parasellar invasion of pituitary adenomas (PAs) into the cavernous sinus (CS) is common. The management of the CS component of PA remains controversial. Objective  The objective of this study was to analyze CS involvement in PA treated with endoscopic endonasal approaches, including incidence, surgical risks, surgical strategies, long-term outcomes, and our treatment algorithm. Methods  We reviewed a series of 176 surgically treated PA with particular attention to CS involvement and whether the CS tumor was approached medial or lateral to the internal carotid artery...
June 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28602497/anatomical-localization-of-the-cavernous-sinus-dural-fistula-by-3d-rotational-angiography-with-emphasis-on-clinical-and-therapeutic-implications
#7
Santhosh Kumar Kannath, Jayadevan Enakshy Rajan, Sankara P Sarma
BACKGROUND AND PURPOSE: Carotid cavernous sinus dural arteriovenous fistulas (CSDAVFs) are presumed to be located within the walls of the cavernous sinus, however the exact fistulous site has not yet been studied by angiographic or anatomical methods. The present study aimed to localize CSDAVFs with the help of 3D rotational angiography (RA) and correlated the observations with clinical and angiographic findings. MATERIALS AND METHODS: The CSDAVFs were categorized as dural, extradural or osseous based on the site of convergence of feeders into the venous sac...
June 8, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28599682/bilateral-ocular-ischemia-induced-blindness-as-a-presenting-manifestation-of-takayasu-arteritis-a-case-report
#8
Pedro Pallangyo, Emmanuel Epafra, Paulina Nicholaus, Frederick Lyimo, Parvina Kazahura, Mohamed Janabi
BACKGROUND: Takayasu arteritis is a granulomatous panarteritis that predominantly affects the aorta and its major branches. The initial manifestations of this large-vessel vasculitis are usually nonspecific; however, as the disease progresses, typical symptoms of arterial occlusion, aneurysmal formation, and vascular pain become evident. Ischemic ocular complications of Takayasu arteritis which could lead to complete loss of vision are not uncommon and depend on the obliterated portion(s) of carotid(s), the intensity and rate of progression of ocular vascular insufficiency, and sufficiency of the collateral blood supply to the eye...
June 10, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28593889/circonscript-subcutaneous-arteriovenous-malformation-of-the-head
#9
Vladimir Mirchevski, Elizabeta Zogovska, Aleksandar Chaparoski, Venko Filipce, Milenko Kostov, Mirko Mishel Mirchevski
The aim of this study is to show the various possibilities to treat this rare malformation, accentuating the results of the early surgical treatment before complications. MATERIAL: The authors present 8 cases of patients with subcutaneous arteriovenous malformations, 5 females and 3 males (age of 7, 13, 19, 23, 27, 52 and 58 years) treated in the period of 1999 until 2015 at the Clinic for Neurosurgery and the Clinic for Plastic, Aesthetic and Reconstructive Surgery in Skopje, Republic of Macedonia...
March 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/28574038/-prediction-of-ischaemic-lesions-of-the-brain-in-reconstructive-operations-on-internal-carotid-arteries
#10
M M Tanashian, R B Medvedev, A N Evdokimenko, É G Gemdzhian, S I Ckrylev, O V Lagoda, M V Krotenkova, A S Suslin
The present study was undertaken to examine the relationship between the level of the intensity of the ultrasonic signal reflected from atherosclerotic plaques (ATP) of carotid arteries and the risk for formation of an ischaemic lesion in the brain matter, detected during diffusion-weighted magnetic resonance imaging (DW-MRI) performed 24 hours after carotid endarterectomy (CEA) or carotid angioplasty and stenting (CAS). Our prospective study included a total of 78 patients presenting with stenosis of the sinus of the interior carotid artery...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28531285/paratrigeminal-paraclival-precavernous-or-all-of-the-above-a-circumferential-anatomical-study-of-the-c3-c4-transitional-segment-of-the-internal-carotid-artery
#11
Eleonora Marcati, Norberto Andaluz, Sebastien C Froelich, Lee A Zimmer, James L Leach, Juan Carlos Fernandez-Miranda, Almaz Kurbanov, Jeffrey T Keller
BACKGROUND: Although the term paraclival carotid pervades recent skull base literature, no clear consensus exists regarding boundaries or anatomical segments. OBJECTIVE: To reconcile various internal carotid artery (ICA) nomenclatures for transcranial and endoscopic-endonasal perspectives, we reexamined the transition between lacerum (C3) and cavernous (C4) segments using a C1-C7 segments schema. In this cadaveric study, we obtained a 360°-circumferential view integrating histological, microsurgical, endoscopic, and neuroradiological analyses of this C3-C4 region and identified a distinct transitional segment...
May 21, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28529487/cardiac-baroreflex-variability-and-resetting-during-sustained-mild-effort
#12
Mair Zamir, Mark B Badrov, T Dylan Olver, J Kevin Shoemaker
This exploratory study assessed the pattern of closed-loop baroreflex resetting using multi-logistic-curve analysis. Operating point gain and ranges of RR-interval (RRI) and systolic blood pressure (SBP) are derived to examine how these relate to sympathetic activation. Sustained low-intensity isometric handgrip exercise, with a period of post-exercise circulatory occlusion (PECO), provided a model to study baroreflex resetting because the progression toward fatigue at constant tension induces a continuous increase in volitional contribution to neuro-cardiovascular control...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28514500/histology-of-the-distal-dural-ring
#13
Christopher S Graffeo, Avital Perry, William R Copeland, Aditya Raghunathan, Michael J Link
BACKGROUND: The distal dural ring (DDR) is a conserved intracranial anatomic structure marking the boundary point at which the internal carotid artery (ICA) exits the cavernous sinus (CS) and enters the subarachnoid space. Although the CS has been well described in a range of anatomic studies, to our knowledge no prior study has analyzed the histologic relationship between the ICA and DDR. Correspondingly, our objective was to assess the relationship of the DDR to the ICA and determine whether the DDR can be dissected from the ICA and thus divided, or can only be circumferentially trimmed around the artery...
May 17, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28512115/endogenous-hydrogen-sulfide-enhances-carotid-sinus-baroreceptor-sensitivity-by-activating-the-transient-receptor-potential-cation-channel-subfamily-v-member-1-trpv1-channel
#14
Wen Yu, Ying Liao, Yaqian Huang, Selena Y Chen, Yan Sun, Chufan Sun, Yuming Wu, Chaoshu Tang, Junbao Du, Hongfang Jin
BACKGROUND: We aimed to investigate the regulatory effects of hydrogen sulfide (H2S) on carotid sinus baroreceptor sensitivity and its mechanisms. METHODS AND RESULTS: Male Wistar-Kyoto rats and spontaneously hypertensive rats (SHRs) were used in the experiment and were given an H2S donor or a cystathionine-β-synthase inhibitor, hydroxylamine, for 8 weeks. Systolic blood pressure and the cystathionine-β-synthase/H2S pathway in carotid sinus were detected. Carotid sinus baroreceptor sensitivity and the functional curve of the carotid baroreceptor were analyzed using the isolated carotid sinus perfusion technique...
May 16, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28494642/normal-anatomy-and-variations-in-the-confluence-of-sinuses-using-digital-subtraction-angiography
#15
Yaqin Cheng, William A Li, Xingjuan Fan, Xiaohua Li, Jian Chen, Yan Wu, Ran Meng, Xunming Ji
OBJECTIVES: The configuration of the confluence of sinuses differs not only between individuals, but also between the two brain hemispheres, making the anatomical classification of this region difficult. In this study, we evaluated the anatomy of the confluence of sinuses and ascertained the accuracy and usefulness of digital subtraction angiography (DSA) in the evaluation of cerebral veins. METHODS: Bilateral carotid and vertebral artery angiographies were performed in 500 adult patients to evaluate the anatomy of the confluence of sinuses and contributory venous sinuses...
June 2017: Neurological Research
https://www.readbyqxmd.com/read/28494130/visualization-of-stereoscopic-anatomic-models-of-the-paranasal-sinuses-and-cervical-vertebrae-from-the-surgical-and-procedural-perspective
#16
Jian Chen, Andrew D Smith, Majid A Khan, Allan R Sinning, Marianne L Conway, Dongmei Cui
Recent improvements in three-dimensional (3D) virtual modeling software allows anatomists to generate high-resolution, visually appealing, colored, anatomical 3D models from computed tomography (CT) images. In this study, high-resolution CT images of a cadaver were used to develop clinically relevant anatomic models including facial skull, nasal cavity, septum, turbinates, paranasal sinuses, optic nerve, pituitary gland, carotid artery, cervical vertebrae, atlanto-axial joint, cervical spinal cord, cervical nerve root, and vertebral artery that can be used to teach clinical trainees (students, residents, and fellows) approaches for trans-sphenoidal pituitary surgery and cervical spine injection procedure...
May 11, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28465265/stereotactic-radiosurgery-for-dural-carotid-cavernous-sinus-fistulas
#17
Seong-Hyun Park, Ki-Su Park, Dong-Hun Kang, Jeong-Hyun Hwang, Sung-Kyoo Hwang
OBJECTIVE: We reviewed our 7-year experience to assess the efficacy of stereotactic radiosurgery (SRS) for dural carotid cavernous fistulas (DCCFs). We analyzed the clinical outcome, complications and angiographic results. METHODS: We performed a retrospective analysis of 18 consecutive patients with DCCF treated by SRS alone using Gamma Knife between 2009 and 2015. Median target volume was 2.6 cm(3) (range, 0.6-11.6 cm(3)) and median radiation dose to the target was 17 Gy (range, 14-19 Gy)...
April 29, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28459715/biphasic-renal-sympathetic-response-to-hemorrhagic-hypotension-in-mice
#18
Tao Zhang, Mamoru Tanida, Kunitoshi Uchida, Yoshiro Suzuki, Wei Yang, Yuhichi Kuda, Yasutaka Kurata, Makoto Tominaga, Toshishige Shibamoto
AIM: The inhibitory responses of renal sympathetic nerve activity (RSNA) and heart rate (HR) to sustained hemorrhagic shock occurred in anesthetized rats, but have not yet been determined in mice. Here, we investigated the responses of RSNA and HR to hemorrhagic hypotension in anesthetized mice, with an emphasis on the molecule-based mechanism for roles of afferent vagal nerves. METHODS: RSNA, HR, and mean systemic arterial pressure (MAP) were continuously measured in male pentobarbital-anesthetized C57BL/6N mice...
April 28, 2017: Shock
https://www.readbyqxmd.com/read/28458950/carotid-cavernous-fistula-after-percutaneous-balloon-compression-for-trigeminal-neuralgia-endovascular-treatment-with-coils
#19
Luana A M Gatto, Rafaella Tacla, Gelson L Koppe, Zeferino Demartini Junior
BACKGROUND: Percutaneous ganglyolysis treatment of trigeminal neuralgia is rarely associated with vascular complications, such as hematoma, subarachnoid hemorrhage, and stroke. Internal carotid artery injury may also occur after misguided needle placement, particularly far posteriorly or medially, resulting in carotid cavernous fistula. Anatomical variations of the foramen ovale can predispose those complications. CASE DESCRIPTION: A young woman diagnosed with trigeminal neuralgia during 11 years was submitted to a balloon rhizotomy by percutaneous approach to the trigeminal ganglion, with severe intraoperative bleeding...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28457930/delayed-venous-drainage-in-ruptured-arteriovenous-malformations-based-on-quantitative-color-coded-digital-subtraction-angiography
#20
Jan-Karl Burkhardt, Xiaolin Chen, Ethan A Winkler, Daniel L Cooke, Helen Kim, Michael T Lawton
OBJECTIVE: Clinically applicable hemodynamic risk factors to predict arteriovenous malformation (AVM) rupture are missing in the literature. The aim of this study was to identify hemodynamic parameters in ruptured and unruptured AVMs based on catheter angiography. METHODS: Patients with frontal and temporal AVMs and Siemens syngo iFlow color-coding angiography were included in this study (n=71). Clinical and radiological data (age, gender, Spetzler-Martin (SM) and supplemented SM grade, and rupture status), and hemodynamic features (contrast mean transit time (MTT) of feeding arteries, draining veins, AVM nidus, and the cerebral circulation time (CCT)) were analyzed...
April 27, 2017: World Neurosurgery
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