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https://www.readbyqxmd.com/read/29166955/brain-arterial-diameters-and-cognitive-performance-the-northern-manhattan-study
#1
Jose Gutierrez, Erin Kulick, Yeseon Park Moon, Chuanhui Dong, Ken Cheung, Bagci Ahmet, Yaakov Stern, Noam Alperin, Tatjana Rundek, Ralph L Sacco, Clinton B Wright, Mitchell S V Elkind
OBJECTIVES: To test the hypothesis that brain arterial diameters are associated with cognitive performance, particularly in arteries supplying domain-specific territories. METHODS: Stroke-free participants in the Northern Manhattan Study were invited to have a brain MRI from 2003-2008. The luminal diameters of 13 intracranial arterial segments were obtained using time-of-flight magnetic resonance angiogram (MRA), and then averaged and normalized into a global score and region-specific arterial diameters...
November 23, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/29166912/neurofilament-distribution-in-the-superior-labrum-and-the-long-head-of-the-biceps-tendon
#2
Sandra Boesmueller, Antal Nógrádi, Patrick Heimel, Christian Albrecht, Sylvia Nürnberger, Heinz Redl, Christian Fialka, Rainer Mittermayr
BACKGROUND: The postoperative course after arthroscopic superior labrum anterior to posterior (SLAP) repair using suture anchors is accompanied by a prolonged period of pain, which might be caused by constriction of nerve fibres. The purpose was to histologically investigate the distribution of neurofilament in the superior labrum and the long head of the biceps tendon (LHBT), i.e. the location of type II SLAP lesions. METHODS: Ten LHBTs including the superior labrum were dissected from fresh human specimen and immunohistochemically stained against neurofilament (NF)...
November 22, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29166133/dosimetric-impact-of-gastrointestinal-air-column-in-radiation-treatment-of-pancreatic-cancer
#3
Neil C Estabrook, Jonathan B Corn, Marvene E Ewing, Higinia R Cardenes, Indra J Das
OBJECTIVE: Dosimetric evaluation of air column in gastro-intestinal (GI) structures in IMRT of pancreatic cancer. METHODS: Nine sequential patients were retrospectively chosen for dosimetric analysis of air column in the GI apparatus in pancreatic cancer using cone beam CT (CBCT). The 4DCT was used for target and organs at risk (OARs) and non-coplanar IMRT was used for treatment. Once/week, these patients underwent CBCT for air filling, isocenter verification and dose calculations retrospectively...
November 22, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29162242/current-concepts-in-spondylopelvic-dissociation
#4
REVIEW
André Luiz Loyelo Barcellos, Vinícius M da Rocha, João Antonio Matheus Guimarães
INTRODUCTION: Spondylopelvic dissociation is an uncommon and complex injury that results from high-energy trauma with axial overloading through the sacrum. Due to the life-threatening nature of these injuries, standard Advanced Trauma Life Support(®) (ATLS) protocol must be used in the trauma setting as part of the initial management of these patients. The key to diagnosis is a good physical exam coupled with high level of suspicion. Radicular neurological deficits commonly are present in spondylopelvic dissociation (L5's roots) and should be documented for future evaluations...
November 2017: Injury
https://www.readbyqxmd.com/read/29162239/biomechanical-study-of-pelvic-discontinuity-in-failed-total-hip-arthroplasty-lessons-learnt-from-the-treatment-of-pelvic-fractures
#5
Julio Ribes-Iborra, Carlos Atienza, Jorge Sevil-De la Torre, Amelia Gómez Pérez
Pelvic discontinuity is a rare but serious problem in orthopedic surgery. Acetabular reconstruction in case of severe bone loss after failed total hip arthroplasty is technically difficult, especially in segmental loss type III (anterior or posterior) or pelvic discontinuity (type IV). Acetabular reinforcement devices are frequently used as load-sharing devices to allow allograft incorporation and in order to serve as support of acetabular implants. This study tries to show, by means of biomechanic work, the efficiency of reinforced plate in anterior column in a segmental pelvic loss, illustrated with a clinical case, which shows the socket stability of hip prosthesis...
November 2017: Injury
https://www.readbyqxmd.com/read/29161717/subconjunctival-prgf-fibrin-membrane-as-an-adjuvant-to-nonpenetrating-deep-sclerectomy-a-2-year-pilot-study
#6
Iñaki Rodríguez-Agirretxe, Vanesa Freire, Francisco Muruzabal, Gorka Orive, Eduardo Anitua, Elio Díez-Feijóo, Arantxa Acera
PURPOSE: To evaluate the potential role of the autologous PRGF (plasma rich in growth factors) fibrin membrane in tissue regeneration after glaucoma filtering surgery. MATERIALS AND METHODS: Ten patients with medically uncontrolled primary open-angle glaucoma underwent nonpenetrating deep sclerectomy and were treated with PRGF fibrin membrane as adjuvant. Intraocular pressure reduction was the primary outcome. This variable was measured preoperatively and also at each follow-up visit...
November 22, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/29160595/advanced-anterior-segment-imaging-in-keratoconus-a-review
#7
REVIEW
Akilesh Gokul, Hans R Vellara, Dipika V Patel
Advances in anterior segment imaging have enhanced our ability to detect keratoconus in its early stages and characterise the pathologic changes that occur. Computerised corneal tomography has elucidated the alterations in shape of the anterior and posterior corneal surfaces and alterations in thickness as the disease progresses. Automated screening indices such as the keratoconus screening index were developed to assist in detecting keratoconus in suspicious cases. In vivo assessment of keratoconic corneas has revealed that compromised corneal biomechanics can now be measured clinically...
November 21, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/29160542/corneal-biomechanical-features-in-patients-with-ankylosing-spondylitis
#8
Kubra Serefoglu Cabuk, Emine Isil Üstün, Kursat Atalay, Ahmet Kirgiz, Rukiye Aydin
PURPOSE: To evaluate the corneal biomechanical features and central corneal thickness in ankylosing spondylitis patients and to evaluate correlations of these parameters with disease activity. METHODS: The study included 51 patients diagnosed with ankylosing spondylitis (mean age, 40.80 ± 13.15 years; range, 18-72 years) and 34 age- and sex-matched healthy controls (mean age, 42.00 ± 12.32 years; range, 18-60 years). All underwent a complete ophthalmological and physical examination, including visual acuity testing and biomicroscopic anterior and posterior segment examinations...
September 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/29160537/relationship-between-anterior-segment-and-optic-nerve-head-parameters-in-healthy-subjects
#9
Ali Bulent Cankaya, Serdar Ozates
PURPOSE: To determine the relationship between anterior segment and optic nerve head (ONH) parameters. METHODS: Two hundred healthy subjects were enrolled in this study. The par-ticipants underwent measurement of anterior segment parameters with a Pentacam Scheimpflug system and imaging of the optic disc with confocal scanning laser ophthalmoscopy. Pearson's correlation coefficient was calculated to assess the associations between ONH and anterior segment parameters...
September 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/29160423/comparison-of-short-segment-monoaxial-and-polyaxial-pedicle-screw-fixation-combined-with-intermediate-screws-in-traumatic-thoracolumbar-fractures-a-finite-element-study-and-clinical-radiographic-review
#10
Hongwei Wang, Yiwen Zhao, Zhongjun Mo, Jianda Han, Yu Chen, Hailong Yu, Qi Wang, Jun Liu, Changqing Li, Yue Zhou, Liangbi Xiang
OBJECTIVES: No studies have compared monoaxial and polyaxial pedicle screws with regard to the von Mises stress of the instrumentation, intradiscal pressures of the adjacent segment and adjacent segment degeneration. METHODS: Short-segment monoaxial/polyaxial pedicle screw fixation techniques were compared using finite element methods, and the redistributed T11-L1 segment range of motion, largest maximal von Mises stress of the instrumentation, and intradiscal pressures of the adjacent segment under displacement loading were evaluated...
October 2017: Clinics
https://www.readbyqxmd.com/read/29160344/quantification-of-intrusive-retraction-force-and-moment-generated-during-en-masse-retraction-of-maxillary-anterior-teeth-using-mini-implants-a-conceptual-approach
#11
A Sumathi Felicita
OBJECTIVE: The aim of the present study was to clarify the biomechanics of en-masse retraction of the upper anterior teeth and attempt to quantify the different forces and moments generated using mini-implants and to calculate the amount of applied force optimal for en-masse intrusion and retraction using mini-implants. METHODS: The optimum force required for en-masse intrusion and retraction can be calculated by using simple mathematical formulae. Depending on the position of the mini-implant and the relationship of the attachment to the center of resistance of the anterior segment, different clinical outcomes are encountered...
September 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/29158954/the-relationship-between-segmental-rolling-ability-and-lumbar-multifidus-activation-time
#12
Nicole Clark, Michael L Voight, Ashley M Campbell, Sherry Pierce, Pat Sells, Ryan Cook, Clint Henley, Lindsey Schiller
Background: Segmental rolling has been utilized as an assessment and intervention tool to identify and affect dysfunction of the upper quarter, core, and lower quarter. One theory to explain dysfunctional segmental rolling is a lack of segmental spinal control / stabilization. Faulty muscle firing sequencing has been related to poor spinal stability, however to date, no assessment tool exists to evaluate a patient's motor coordination of local and global musculature. Purpose: The purpose of this study was to assess the temporal sequence of lumbar multifidus activation associated with anterior deltoid activation, and to determine if faulty sequencing was associated with the inability to segmentally roll in subjects without mobility restrictions...
November 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29158035/infant-chest-compression-quality-a-video-based-comparison-of-two-thumb-versus-one-hand-technique-in-the-emergency-department
#13
Hye Young Jang, Heather Wolfe, Ting-Chang Hsieh, Mary Kate Abbadessa, Sage Myers, Vinay Nadkarni, Aaron Donoghue
AIM: To use video review to compare CC quality between 2-thumb encircling (2T) and one-hand anterior (1H) hand position in infants receiving CPR. METHODS: Events where an infant received >2minutes of CC using a CPR monitor device while videorecorded were included. CC were measured in segments provided by a single compressor; segment duration, identity of the compressor, and hand position (2T vs 1H) was determined from video review. CC rate and depth were measured by the monitor device...
November 17, 2017: Resuscitation
https://www.readbyqxmd.com/read/29156465/-pseudophacic-additive-lenses
#14
Fritz H Hengerer, Ina Conrad-Hengerer
Implantation of artificial intraocular lenses (IOL) after cataract removal today represents the standard of care in the field of anterior segment surgery. In refractive lens exchange cases the natural lens is replaced by an IOL to correct different types of refractive situations. In the majority of the operations the refractive result is satisfying with only few deviations from target refraction.But daily practice reveals some outliers from the intended corrections with the need for further refractive enhancements, respectively...
November 20, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29156413/anterior-posterior-gradient-differences-in-lobar-and-cingulate-cortex-cerebral-blood-flow-in-late-life-depression
#15
Margarita Abi Zeid Daou, Brian D Boyd, Manus J Donahue, Kimberly Albert, Warren D Taylor
Vascular pathology is common in late-life depression, contributing to changes in cerebral function. We examined whether late-life depression was associated with differences in cerebral blood flow (CBF) and whether such differences were related to vascular risk and cerebrovascular pathology, specifically white matter hyperintensity (WMH) volumes. Twenty-three depressed elders and 20 age- and sex-matched elders with no psychiatric history completed cranial 3T MRI. MRI procedures included a pseudo-continuous Arterial Spin Labeling (pcASL) acquisition obtained while on room air and during a hypercapnia challenge allowing for calculation of cerebrovascular reactivity (CVR)...
November 11, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29155874/morphological-characteristics-of-diffuse-idiopathic-skeletal-hyperostosis-in-the-cervical-spine
#16
Jessica T Bakker, Jonneke S Kuperus, Hugo J Kuijf, F Cumhur Oner, Pim A de Jong, Jorrit-Jan Verlaan
OBJECTIVES: Diffuse idiopathic skeletal hyperostosis (DISH) is characterized by anterior ossification of the spine and can lead to dysphagia and airway obstruction. The morphology of the newly formed bone in the cervical spine is different compared to the thoracic spine, possibly due to dissimilarities in local vascular anatomy. In this study the spatial relationship of the new bone with the arterial system, trachea and esophagus was analyzed and compared between subjects with and without DISH...
2017: PloS One
https://www.readbyqxmd.com/read/29155114/risks-of-endoscopic-temporal-ventriculocisternostomy-for-isolated-lateral-ventricle-anatomical-surgical-nuances
#17
Takatoshi Hasegawa, Toshihiro Ogiwara, Alhusain Nagm, Tetsuya Goto, Tatsuro Aoyama, Kazuhiro Hongo
BACKGROUND: Entrapment of the temporal horn, known as isolated lateral ventricle (ILV), is a rare type of noncommunicating focal hydrocephalus, and its standard treatment has not been established. Here, we report two cases of endoscopic surgery for ILV, and highlight the anatomical surgical nuances to avoid associated surgical risks. CASE DESCRIPTION: The authors present two surgical cases with ILV treated by endoscopic surgery. The first patient with recurrent ILV, due to shunt malfunction, following the initial shunt placement for ILV...
November 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29155064/enterprise-deployment-through-a-pulserider-to-treat-an-anterior-communicating-artery-aneurysm-recurrence
#18
Iacopo Valente, Nicola Limbucci, Sergio Nappini, Andrea Rosi, Antonio Laiso, Salvatore Mangiafico
BACKGROUND: PulseRider (Pulsar Vascular, Los Gatos, CA, USA) is a new endovascular device designed to treat wide neck bifurcation intracranial aneurysms. Deployment of a stent through a PulseRider to treat an aneurysm's recurrence has never been described before. CASE DESCRIPTION: We report the case of a 55-year-old man who underwent coiling of a 8 mm anterior communicating artery aneurysm with assistance of a PulseRider neck reconstruction device. The 6-month digital subtraction angiography control showed aneurysm recurrence, so we deployed an Enterprise 2 closed-cell stent (Codman, Miami Lakes, FL, USA) in the A1-A2 segment passing across the previously implanted PulseRider...
November 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29153286/combined-transaortic-and-transapical-approach-to-septal-myectomy-in-patients-with-complex-hypertrophic-cardiomyopathy
#19
Dustin Hang, Hartzell V Schaff, Steve R Ommen, Joseph A Dearani, Rick A Nishimura
OBJECTIVES: Residual midventricular obstruction after transaortic myectomy may lead to recurrent symptoms and reoperation in patients with hypertrophic cardiomyopathy and long-segment septal hypertrophy. A combined transaortic and transapical approach to septal myectomy during initial operation allows for the complete relief of subaortic and midventricular gradients and may reduce the risk of poor late functional results. METHODS: We analyzed the early outcomes of 86 patients aged 18 years or more who underwent combined transaortic and transapical septal myectomy for left ventricular outflow tract obstruction due to systolic anterior motion and midventricular obstruction or cavitary obliteration due to apical hypertrophic cardiomyopathy...
October 27, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29151687/medium-term-anatomical-results-of-laser-peripheral-iridoplasty-an-anterior-segment-optical-coherence-tomography-study
#20
Joobin Hooshmand, James Cy Leong, Jeremy O'Connor, Ghee S Ang, Anthony P Wells
Aim: To evaluate by anterior segment optical coherence tomography (AS-OCT) the medium-term (mean duration 3.2 years) anatomical changes in the anterior chamber angle (ACA) after laser peripheral iridoplasty. Materials and methods: This is a longitudinal, retrospective case series of 31 eyes of 31 patients with primary angle-closure suspicion, primary angle closure (PAC), or primary angle-closure glaucoma (PACG) who underwent laser peripheral iridoplasty. All patients had persistent iridotrabecular contact (ITC) despite the presence of a patent peripheral iridotomy (PI)...
September 2017: Journal of Current Glaucoma Practice
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