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https://www.readbyqxmd.com/read/29143107/how-i-do-it-endoscopic-microvascular-decompression-for-hemifacial-spasm-associated-with-the-vertebral-artery
#1
Fuminari Komatsu, Masaaki Imai, Mitsunori Matsumae
BACKGROUND: Microvascular decompression (MVD) of hemifacial spasm (HFS) associated with the vertebral artery (VA) shows higher rates of incomplete cure and complications compared to non-VA-related HFS. METHOD: Purely endoscopic MVD for VA-associated HFS via a retrosigmoid keyhole was performed. Neurovascular conflicts by a directly offending artery and VA around the root exit zone of the facial nerve were clearly demonstrated under 30° endoscopic view without significant cerebellar retraction...
November 15, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29142778/-foramen-magnum-meningiomas-a-report-of-12-cases-and-literature-review
#2
Álvaro Campero, Pablo Ajler, Guillermo Roman, Conrado Rivadeneira
Objectives: The primary aim of this study was to assess the results attained for 12 patients with an anterior or lateral foramen magnum meningioma, treated microsurgically. Methods: Between June 2005 and December 2016, 12 patients with foramen magnum meningiomas underwent microsurgical resection. Patients' age and gender, tumor localization (anterior or lateral), symptoms, approach, and postoperative results were analyzed. Results: Eight of the 12 patients were women...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29142493/cervical-arterial-fibromuscular-dysplasia-in-a-biethnic-population-a-retrospective-study-in-the-u-s-mexican-border
#3
Ihtesham A Qureshi, Gustavo J Rodriguez, Tatiana Chacon-Quesada, Gavito-Higuera Jose, Salvador Cruz-Flores, Alberto Maud
Background  There have been studies trying to characterize Fibromuscular Dysplasia (FMD); however, most of them are based in mainly non-Hispanic sample. The objective of this study is to better understand the epidemiology and clinical characteristics of craniocervical FMD in the Hispanic population. Methods  We retrospectively reviewed the cerebral angiograms performed in our center in a period of 3.5 years under any indication looking for angiographic patterns of FMD. Exclusion criteria consisted of cases in which the first angiogram was done when the patients were younger than 18 years...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29138702/a-case-of-c5-vertebral-chordoma-in-a-73-year-old-patient-with-more-than-8-years-of-follow-up-after-total-piecemeal-spondylectomy
#4
Keigo Tanaka, Harutoshi Sakakima, Kazutoshi Hida, Kanako Hatanaka, Kosei Ijiri
Chordoma arising from the cervical spine is rare and the traditional long-term prognosis is typically poor. Total en bloc spondylectomy with a wide margin is generally accepted to be the most appropriate management for thoracic and lumbar malignant tumors. However, this method is still challenging for the cervical spine because of the proximity of the tumor to the vertebral arteries and neural elements. Here, we report a 73-year-old man with a C5 vertebral chordoma treated with total piecemeal spondylectomy...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29131823/prevalence-of-extracranial-carotid-artery-aneurysms-in-patients-with-an-intracranial-aneurysm
#5
V E C Pourier, C J H C M van Laarhoven, M D I Vergouwen, G J E Rinkel, Gert J de Borst
BACKGROUND AND PURPOSE: Aneurysms in various arterial beds have common risk- and genetic factors. Data on the correlation of extracranial carotid artery aneurysms (ECAA) with aneurysms in other vascular territories are lacking. We aimed to investigate the prevalence of ECAA in patients with an intracranial aneurysm (IA). METHODS: We used prospectively collected databases of consecutive patients registered at the University Medical Center Utrecht with an unruptured intracranial aneurysm (UIA) or aneurysmal Subarachnoid hemorrhage (SAH)...
2017: PloS One
https://www.readbyqxmd.com/read/29130477/transcranial-doppler-and-lower-extremity-function-in-older-adults-einstein-aging-study
#6
Ali Ezzati, Tatjana Rundek, Joe Verghese, Carol A Derby
OBJECTIVES: To determine whether transcranial Doppler ultrasound (TCD) measures of mean blood flow velocity (MBFV) in the major cerebral arteries are associated with measures of lower extremity function in community-dwelling older adults. DESIGN: Cross-sectional study. SETTING: Community sample. PARTICIPANTS: Individuals aged 70 and older (mean 79.5, 54% female) without dementia participating in the Einstein Aging Study (N = 200)...
November 11, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/29129766/the-treatment-of-a-spontaneous-dissecting-aneurysm-in-the-extracranial-vertebral-artery-with-covered-stent-a-case-report
#7
Ning Xu, Kun Zhang, Hao Meng, Tianyi Liu, Honglei Wang
A 13-year-old boy with a spontaneous vertebrobasilar artery dissecting aneurysm (VADA) in the extracranial artery, which was only 1 mm away from the initial segment of subclavian artery, was successfully treated with a covered-stent to block the artery of the VADA. Our experience indicates that this is a fast, reliable, effective and economical technique, particularly suitable for surgeries in settings with limited resources.
November 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29129522/increasing-the-safety-of-surgical-treatment-for-complex-cranio-vertebral-anomalies-using-customized-3d-printed-models
#8
Kataria Rashim, K Verma Pawan, V D Sinha
Surgery for the Cranio-vertebral (CV) junction anomalies using top loading subocciput (C0)/C1-C2 screws is difficult and requires high level of skill and expertise. This is because of complex abnormal anatomy in that region and other issues including the instrumentation. Thorough knowledge of the 3D anatomy of the Craniovertebral junction of the patient is essential for favourable outcome. The customised 3D printed model of CV junction region of the patient can be used for studying the anatomy and relationship of vertebral artery to the C1-C2 joint before the actual surgery...
November 9, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29125372/matched-increases-in-cerebral-artery-shear-stress-irrespective-of-stimulus-induce-similar-changes-in-extra-cranial-arterial-diameter-in-humans
#9
Kurt J Smith, Ryan L Hoiland, Ryan Grove, Hamish McKirdy, Louise Naylor, Philip N Ainslie, Daniel J Green
The mechanistic role of arterial shear stress in the regulation of cerebrovascular responses to physiological stimuli (exercise and hypercapnia) is poorly understood. We hypothesised that, if shear stress is a key regulator of arterial dilation, then matched increases in shear, induced by distinct physiological stimuli, would trigger similar dilation of the large extra-cranial arteries. Participants ( n = 10) participated in three 30-min experimental interventions, each separated by ≥48 h: (1) mild-hypercapnia (FICO2:∼0...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29124322/air-breathing-changes-the-pattern-for-temperature-induced-ph-regulation-in-a-bimodal-breathing-teleost
#10
Christian Damsgaard, Mikkel Thy Thomsen, Mark Bayley, Tobias Wang
It is well established that ectothermic vertebrates regulate a lower arterial pH when temperature increases. Typically, water-breathers reduce arterial pH by altering plasma [HCO3(-)], whilst air-breathers rely on ventilatory adjustments to modulate arterial PCO2. However, no studies have investigated whether the shift from water- to air-breathing within a species changes the mechanisms for temperature-induced pH regulation. Here, we used the striped catfish Pangasianodon hypophthalmus to examine how pH regulation is affected by water- versus air-breathing, since P...
November 9, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/29119372/anatomical-considerations-of-c2-lamina-for-the-placement-of-translaminar-screw-a-review-of-the-literature
#11
REVIEW
D Chytas, D S Korres, G C Babis, N E Efstathopoulos, E C Papadopoulos, K Markatos, V S Nikolaou
PURPOSE: The thorough knowledge of C2 lamina anatomy is essential for the avoidance of complications during screw fixation. We performed a review of the literature, aiming to detect what was found about anatomical feasibility of C2 translaminar fixation in different populations, along with possible recommendations for the avoidance of complications, and to detect whether factors such as race or gender could influence axis lamina anatomy and fixation feasibility. METHODS: We performed a search in PubMed and Cochrane database of systematic reviews for studies which correlated axis lamina anatomy with fixation feasibility...
November 8, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29119335/unilateral-vertebral-artery-injury-in-a-patient-with-displaced-upper-cervical-spine-fractures-the-treatment-for-one-case-of-vertebral-artery-embolism
#12
Hong-Jun Zou, Jun Wu, Yong Hu, Dong Cheng, Jin-Bo Liu
PURPOSE: To report a novel treatment method for vertebral artery injury. Vertebral artery injuries may be caused during trauma by fracture and excessive motion with subluxation from C2 to C6 in spite of vertebral artery deeply seated and normally well protected inside the transverse foramen. Optimal medical management of the occluded vertebral artery has yet to be determined. METHODS: We report on a severely displaced C2-C3 fracture that was found to have a vertebral artery injury...
November 8, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29118804/hybrid-retrograde-antegrade-recanalization-of-acute-basilar-artery-occlusion
#13
James D Rossen, Edgar A Samaniego, Mishelle Paullus, Santiago Ortega-Gutierrez
Acute basilar artery (BA) occlusion has a very poor prognosis. Recanalization can be challenged by bilateral vertebral artery (VA) occlusions, arterial dissection, or advanced atherosclerotic disease. We describe a case in whom the BA was accessed and recanalized through a retrograde-antegrade approach from the anterior circulation using a large posterior communicating artery (PCOM). Once the BA had been crossed retrogradely through the PCOM, another microcatheter was advanced antegradely through the VA into the BA and right posterior cerebral artery using the "buddy-wire" technique...
October 2017: Interventional Neurology
https://www.readbyqxmd.com/read/29118803/multimodal-therapy-for-non-superacute-vertebral-basilar-artery-occlusion
#14
Xiongjun He, Liang Zhang, Juan Yang, Hui Zheng, Kaifeng Li, Yajie Liu
Objective: The aim of this study was to evaluate the feasibility and safety of multimodal therapy for patients with non-superacute vertebral basilar artery occlusion. Method: We performed a retrospective analysis of multimodal therapy for patients with vertebral basilar artery occlusion. All patients who were beyond the time window to receive intravenous thrombolysis and who had deterioration of symptoms after drug treatment received small-balloon dilatation of the occlusive artery to estimate vascular occlusion aetiology...
October 2017: Interventional Neurology
https://www.readbyqxmd.com/read/29114306/combined-use-of-intraoperative-indocyanine-green-and-dynamic-angiography-in-rotational-vertebral-artery-occlusion
#15
Nauman Chaudhry, Brandon Gerard Gaynor, Sudheer Ambekar, Mohamed Samy Elhammady
Rotational vertebral artery occlusion (RVAO) is a well-documented surgically amenable cause of vertebrobasilar insufficiency. Traditionally, patients have been imaged using dynamic rotational angiography. We report a case of RVAO in which intraoperative indocyanine green angiography (ICGA) was used to confirm adequate surgical decompression of the VA. A 57-year-old female who presented with multiple episodes of syncope provoked by turning her head to the right. Rotational dynamic angiography revealed a dominant right VA that became occluded at the level of C5/6 with head rotation to the right...
October 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29111340/agenesis-of-the-left-internal-carotid-artery-associated-with-dolichoectatic-intracranial-arteries
#16
Motohiro Nomura, Akira Tamase, Kentaro Mori, Syunsuke Seki, Yu Iida, Yuichi Kawabata, Tatsu Nakano
A 28-year-old man without a significant medical history visited our hospital complaining of a headache. Computed tomography (CT) demonstrated thick, calcified vertebral artery (VA) and basilar artery (BA), despite the patient being young. Magnetic resonance angiography demonstrated the absence of the left internal carotid artery (ICA). The right ICA, the bilateral VA, and the BA were well developed and dolichoectatic. CT revealed the absence of the carotid canal on the left side. The condition was diagnosed as congenital agenesis of the left ICA with dolichoectatic changes in 3 other arteries...
October 27, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29110712/ultrasonographically-determined-renal-values-and-comparisons-to-serum-biochemistry-renal-variables-in-aged-semi-captive-cheetahs-acinonyx-jubatus
#17
Robert M Kirberger, Adrian S W Tordiffe
BACKGROUND: Cheetahs in captivity have a high prevalence of chronic renal diseases. We ultrasonographically evaluated the renal volumes, a variety of renal dimensions, interarcuate artery resistive indices (RI) as well as aortic diameters and the length of the ventral aspect of the 6th lumbar vertebrae in 27 aged semi-captive anesthetized cheetahs. Renal size, dimensions and ratios were compared to urine specific gravity, serum creatinine and urea values. RESULTS: There were minimal differences for all values between left and right kidneys...
November 6, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29108808/fatal-intracranial-aneurysms-and-dissections-causing-subarachnoid-hemorrhage-an-epidemiological-and-pathological-analysis-of-607-legal-autopsy-cases
#18
Shinjiro Mori, Shirushi Takahashi, Akira Hayakawa, Kazuyuki Saito, Aya Takada, Tatsushige Fukunaga
BACKGROUND: There are no detailed reports, in terms of epidemiology and pathology, on intracranial aneurysms and on dissections that were found in unexpected fatal subarachnoid hemorrhage (SAH) cases. In this report we analyzed, based on large-sized medicolegal autopsy cases, the detailed epidemiology and pathological aspects of both lesions. METHODS: We analyzed 607 autopsy cases of unexpected fatal SAHs including 496 aneurysms and 111 dissections. RESULTS: The following results were obtained: (1) Patients who died of dissections were younger than those who died of aneurysms; (2) symptom prevalence rates of aneurysms were 31...
November 3, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29107436/the-collateral-circulation-in-moyamoya-disease-a-single-center-experience-in-140-pediatric-patients
#19
Meng Zhao, Dong Zhang, Shuo Wang, Yan Zhang, Xiaofeng Deng, Jizong Zhao
BACKGROUND: The patterns and clinical significance of the presence of collaterals in moyamoya disease has not been elucidated thoroughly. We aimed to summarize the clinical features of collaterals in pediatric moyamoya disease. BASIC PROCEDURES: We reviewed consecutive pediatric patients with moyamoya vasculopathy who were admitted to our hospital from 2009 to 2015. Only pediatric moyamoya patients with digital subtraction angiography examinations were included in this study...
September 14, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/29104678/influence-of-gender-and-age-on-average-dimensions-of-arteries-forming-the-circle-of-willis-study-by-magnetic-resonance-angiography-on-kosovo-s-population
#20
Jeton Shatri, Dorentina Bexheti, Sadi Bexheti, Serbeze Kabashi, Shaip Krasniqi, Ilir Ahmetgjekaj, Valbona Zhjeqi
BACKGROUND: Circulus arteriosus cerebri is the main source of blood supply to the brain; it connects the left and right hemispheres with anterior and posterior parts. Located at the interpenducular fossa at the base of the brain the circle of Willis is the most important source of collateral circulation in the presence of the disease in the carotid or vertebral artery. AIM: The purpose of the research is to study the diameter and length of arteries and provide an important source of reference on Kosovo's population...
October 15, 2017: Open Access Macedonian Journal of Medical Sciences
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