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https://www.readbyqxmd.com/read/28741982/multimodal-mr-imaging-signatures-of-cognitive-impairment-in-active-professional-fighters
#1
Virendra R Mishra, Xiaowei Zhuang, Karthik R Sreenivasan, Sarah J Banks, Zhengshi Yang, Charles Bernick, Dietmar Cordes
Purpose To investigate whether combining multiple magnetic resonance (MR) imaging modalities such as T1-weighted and diffusion-weighted MR imaging could reveal imaging biomarkers associated with cognition in active professional fighters. Materials and Methods Active professional fighters (n = 297; 24 women and 273 men) were recruited at one center. Sixty-two fighters (six women and 56 men) returned for a follow-up examination. Only men were included in the main analysis of the study. On the basis of computerized testing, fighters were separated into the cognitively impaired and nonimpaired groups on the basis of computerized testing...
July 25, 2017: Radiology
https://www.readbyqxmd.com/read/28741228/craniocerebral-birth-injuries-in-term-newborn-infants-a-retrospective-series
#2
Pieter Nachtergaele, Frank Van Calenbergh, Lieven Lagae
OBJECTIVE: In an attempt to further define the spectrum of cranial birth injuries, we analyzed 21 consecutive cranial birth injuries in term neonates presenting to the neurosurgical department of our institution over the period 1994-2015. METHODS: We performed a retrospective chart review from the medical records of the University Hospitals of the KU Leuven, from 1994 to 2015. We included 21 infants of 36-week gestational age or older with a diagnosis of cranial birth injury...
July 24, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28740437/the-larynx-ruler-to-measure-height-and-profile-of-vocal-folds-a-proof-of-concept
#3
Gauthier Desuter, Benjamin Mertens, Alain Delchambre, Julie van Lith-Bijl, Peter Paul van Benthem, Elisabeth Sjögren
INTRODUCTION: Glottic leakage during phonation is a direct consequence of unilateral vocal fold (VF) paralysis. This air leakage can be in the horizontal plane and in the vertical plane. Presently, there is no easily applicable medical device allowing noninvasive, office-based measurement of the relative vertical position of the VFs. The larynx ruler (LR) is a laser-based measuring device that could meet the previously stated need, using a flexible endoscope. This study represents a proof of concept regarding the use of the LR in assessing VF relative positions in the vertical plane...
2017: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/28739565/unusual-genitourinary-tract-activity
#4
Eoin MacCraith, Niall F Davis, James Forde
A 23-year-old woman presented to the emergency department after manually inserting foreign bodies into the urinary bladder through her urethra. A plain abdominal film of the kidneys, ureters and bladder confirmed three radio-opaque densities in the urinary bladder. She was taken to the operating room where cystourethroscopy was performed. At cystoscopy 2 'corn-on-the-cob' skewers and 1 battery were identified but were too large to be retrieved safely with a grasper through the protective sheath. The objects were grasped with a 'sponge-holding forceps' (placed alongside the cystoscope) and extracted one at a time...
July 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28737268/comparison-of-two-minimally-invasive-techniques-for-liver-biopsy-collection-in-dogs
#5
N Fernandez, J Del-Pozo, D Shaw, A I C Marques
OBJECTIVES: High-quality biopsy is an essential factor for the successful diagnosis of canine liver disease. The aim of this study was to compare various aspects of biopsies obtained by two different techniques: pretied ligating loop and cup biopsy forceps. MATERIALS AND METHODS: Fifteen client-owned dogs underwent laparoscopic liver biopsies for diagnosis of liver disease. Biopsies were obtained from the same liver lobe using a pre-tied ligating loop and cup biopsy forceps...
July 24, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28736508/3-dof-force-sensing-motorized-micro-forceps-for-robot-assisted-vitreoretinal-surgery
#6
Berk Gonenc, Alireza Chamani, James Handa, Peter Gehlbach, Russell H Taylor, Iulian Iordachita
In vitreoretinal surgery, membrane peeling is a prototypical task where a layer of fibrous tissue is delaminated off the retina with a micro-forceps by applying very fine forces that are mostly imperceptible to the surgeon. Previously we developed sensitized ophthalmic surgery tools based on fiber Bragg grating (FBG) strain sensors, which were shown to precisely detect forces at the instrument's tip in two degrees of freedom perpendicular to the tool axis. This paper presents a new design that employs an additional sensor to capture also the tensile force along the tool axis...
June 1, 2017: IEEE Sensors Journal
https://www.readbyqxmd.com/read/28732604/artificial-iris-implantation-in-various-iris-defects-and-lens-conditions
#7
Christian Mayer, Tamer Tandogan, Andrea E Hoffmann, Ramin Khoramnia
We describe 6 surgical techniques used to implant a silicone iris prosthesis: sector-shaped iris segments that require suturing, injector-assisted sulcus fixation, injector-assisted capsular bag fixation with an intraocular lens (IOL) and capsular tension ring, folded iris tissue implanted with a forceps and sutured to the sclera with a scleral-fixated IOL, "sandwich" or "backpack" implantation with an IOL, and open-sky implantation with a perforating keratoplasty. The results of the techniques performed in 51 patients are discussed...
June 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28730126/pivot-concept-achieving-a-good-quality-capsulorrhexis-through-a-2-2-mm-or-less-clear-corneal-incision-by-using-standard-capsulorhexis-forceps
#8
Hung-Yuan Lin, Ya-Jung Chuang, Xin Tang, Chun-Chang Lin, Hsin-Yang Chen, Pi-Jung Lin
No abstract text is available yet for this article.
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28729372/intraoperative-optical-coherence-tomography-compatible-surgical-instruments-for-real-time-image-guided-ophthalmic-surgery
#9
Justis P Ehlers, Atsuro Uchida, Sunil K Srivastava
Intraoperative optical coherence tomography (OCT) is a potentially transformational technology that is now commercially available to ophthalmic surgeons. Currently, the use of the technology is primarily limited to a 'stop and image' approach due to the lack of OCT compatibility with surgical instrumentation. In this report, we describe multiple OCT-compatible surgical instruments that were developed for various surgical needs, based on previous evaluation of potential surgical materials for optical features and physical properties...
July 20, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28726586/application-of-ureterorenoscope-and-flexible-ureterorenoscope-lithotripsy-in-removing-calculus-from-extracorporeal-living-donor-renal-graft-a-single-center-experience
#10
Chun-Hua Lin, Zuo-Fu Zhang, Jiahui Wang, Lu-Xin Yu, Wen-Ting Wang, Lei Shi, Xiang-Nan Lin
Here, we reported our clinical application of ureterorenoscope (URS) and flexible URS lithotripsy in stone removal on 10 cases of excised living donor kidney graft. After the extraction of donor kidney by retroperitoneal laparoscopy, the donor graft was perfused with 4 °C HCA solution. Calculus between 2-4 mm were removed intact with lithotomy forceps under direct vision of URS. Larger calculi of >4 mm were fractured with flexible URS combining holmium laser lithotripsy. Fragments of the calculus were extracted with basket extractor and lithotomy forceps...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28721483/the-effectiveness-of-mediolateral-episiotomy-in-preventing-obstetric-anal-sphincter-injuries-during-operative-vaginal-delivery-a-ten-year-analysis-of-a-national-registry
#11
Jeroen van Bavel, Chantal W P M Hukkelhoven, Charlotte de Vries, Dimitri N M Papatsonis, Joey de Vogel, Jan-Paul W R Roovers, Ben Willem Mol, Jan Willem de Leeuw
INTRODUCTION AND HYPOTHESIS: Obstetric anal sphincter injuries (OASIS) are associated with an increased risk of faecal incontinence after vaginal delivery. The aim of this retrospective population-based cohort study was to assess whether mediolateral episiotomy is associated with a reduction in the rate of OASIS during operative vaginal delivery. METHODS: We used data from the Dutch Perinatal Registry (Perined) that includes records of almost all births between 2000 and 2010 in The Netherlands...
July 18, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28719978/optimizing-rna-extraction-of-renal-papilla-biopsy-tissue-in-kidney-stone-formers-a-new-methodology-for-genomic-study
#12
Kazumi Taguchi, Manint Usawachintachit, Shuzo Hamamoto, Rei Unno, David T Tzou, Benjamin Sherer, Yongmei Wang, Atsushi Okada, Marshall Stoller, Takahiro Yasui, Thomas Chi
INTRODUCTION: Endoscopic tools have provided versatile examination and treatment for kidney stone procedures. Despite endourologists researching urinary stone disease using endoscopes to collect tissue, this tissue collection method is limited. Endoscopically removed tissues are small in size, restricting the types of genome-based examination possible. We investigated a new method of renal papilla biopsy and RNA extraction to establish a genomic research methodology for kidney stone disease...
July 18, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28717281/cystoscopic-stent-removal-using-a-guidewire-loop
#13
Ajay T Oswal, Pankaj N Maheshwari, Dhruti Amlani
Stent removal is a simple procedure performed with a rigid cystoscope and a stent removal forceps. In the rare event when the stent removal forceps does not work or breaks down, a guidewire loop can be used to remove the stent.
July 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28717197/subcortical-volume-and-white-matter-integrity-abnormalities-in-major-depressive-disorder-findings-from-uk-biobank-imaging-data
#14
Xueyi Shen, Lianne M Reus, Simon R Cox, Mark J Adams, David C Liewald, Mark E Bastin, Daniel J Smith, Ian J Deary, Heather C Whalley, Andrew M McIntosh
Previous reports of altered grey and white matter structure in Major Depressive Disorder (MDD) have been inconsistent. Recent meta-analyses have, however, reported reduced hippocampal grey matter volume in MDD and reduced white matter integrity in several brain regions. The use of different diagnostic criteria, scanners and imaging sequences may, however, obscure further anatomical differences. In this study, we tested for differences in subcortical grey matter volume (n = 1157) and white matter integrity (n = 1089) between depressed individuals and controls in the subset of 8590 UK Biobank Imaging study participants who had undergone depression assessments...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28715393/generation-and-long-term-maintenance-of-nerve-free-hydra
#15
Cassidy M Tran, Sharon Fu, Trevor Rowe, Eva-Maria S Collins
The interstitial cell lineage of Hydra includes multipotent stem cells, and their derivatives: gland cells, nematocytes, germ cells, and nerve cells. The interstitial cells can be eliminated through two consecutive treatments with colchicine, a plant-derived toxin that kills dividing cells, thus erasing the potential for renewal of the differentiated cells that are derived from the interstitial stem cells. This allows for the generation of Hydra that lack nerve cells. A nerve-free polyp cannot open its mouth to feed, egest, or regulate osmotic pressure...
July 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28713710/the-healing-effect-of-conditioned-media-and-bone-marrow-derived-stem-cells-in-laryngotracheal-stenosis-a-comparison-in-experimental-dog-model
#16
Kamyar Iravani, Arash Sobhanmanesh, Mohammad Javad Ashraf, Seyed Basir Hashemi, Davood Mehrabani, Shahrokh Zare
BACKGROUND: Differences in causes, severities, areas of stenosis, and the association with swallowing and phonation of larynx and trachea can result into Laryngotracheal stenosis (LTS).This study evaluated the healing effect of bone marrow stem cells (BMSCs) in experimentally induced LTS dog model. METHODS: Seven dogs were enrolled. BMSCs were isolated from proximal humerus and shoulder of a dog and cultured in media containing alpha minimal essential medium, fetal bovine serum, penicillin and streptomycin, and L-glutamine...
May 2017: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/28713635/fibrous-encapsulation-of-the-peritoneal-catheter-in-peritoneal-shunt-case-report
#17
Tomoaki Kano, Hideyuki Kawauchi
BACKGROUND: The authors report a case of fibrous encapsulation of the peritoneal catheter, which caused peritoneal shunt malfunction, and has not previously been researched well as a complication of peritoneal shunts. CASE DESCRIPTION: A 69-year-old woman who had undergone a lumboperitoneal (LP) shunt for communicative hydrocephalus following subarachnoid hemorrhage caused by a ruptured aneurysm was identified with malfunction of the LP shunt system by dementia and gait disturbance...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28702208/conjunctival-cystectomy-assisted-by-pattern-scan-laser-photocoagulation
#18
Hee Kyung Yang, Moosang Kim, Seung-Jun Lee, Sang Beom Han, Joon Young Hyon, Won Ryang Wee
BACKGROUND: To introduce a new technique of laser-assisted conjunctival cystectomy using pattern scan laser (PASCAL) photocoagulation. CASE PRESENTATION: A 50-years-old Asian woman presented with a conjunctival cyst in the left eye. Slit-lamp examination revealed a 5 mm × 2 mm sized freely movable conjunctival cyst. After a 1 mm × 1 mm sized conjunctival opening was made using PASCAL photocoagulation, the cyst was extracted using a non-toothed forceps without rupture...
2017: Military Medical Research
https://www.readbyqxmd.com/read/28695783/sialendoscopic-pneumatic-lithotripsy-for-salivary-calculi-a-new-technique-and-a-long-term-clinical-experience
#19
Erhun Serbetci, M Mazhar Celikoyar, Aytug Altundag
We report our results comprising a series of 34 cases of sialolithiasis that were approached sialendoscopically with conventional instruments (ie, basket and/or forceps) and for which stone removal was unsuccessful and so were thereafter treated with pneumatic lithotripsy. Intraductal pneumatic lithotripsy was able to fragment 30 of 34 (88%) salivary calculi in total. No major complications occurred. All 30 treated glands returned to normal function without any symptoms. We believe that the success of sialendoscopy is closely related to the success of salivary stone fragmentability...
July 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28692173/perinatal-and-maternal-morbidity-and-mortality-among-term-singletons-following-midcavity-operative-vaginal-delivery-versus-caesarean-delivery
#20
Giulia M Muraca, Amanda Skoll, Sarka Lisonkova, Yasser Sabr, Rollin Brant, Geoffrey W Cundiff, K S Joseph
OBJECTIVE: To quantify severe perinatal and maternal morbidity/mortality associated with midcavity operative vaginal delivery compared with caesarean delivery. DESIGN: Population-based, retrospective cohort study. SETTING: British Columbia, Canada. POPULATION: Term, singleton deliveries (2004-2014) by attempted midcavity operative vaginal delivery or caesarean delivery in the second stage of labour, stratified by indication for operative delivery (n=10,901 deliveries; 5,057 indicated for dystocia, 5,844 for fetal distress)...
July 10, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
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