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https://www.readbyqxmd.com/read/28448664/assessment-of-lower-doses-of-intravitreous-bevacizumab-for-retinopathy-of-prematurity-a-phase-1-dosing-study
#1
David K Wallace, Raymond T Kraker, Sharon F Freedman, Eric R Crouch, Amy K Hutchinson, Amit R Bhatt, David L Rogers, Michael B Yang, Kathryn M Haider, Deborah K VanderVeen, R Michael Siatkowski, Trevano W Dean, Roy W Beck, Michael X Repka, Lois E Smith, William V Good, Mary Elizabeth Hartnett, Lingkun Kong, Jonathan M Holmes
Importance: Intravitreous bevacizumab (0.25 to 0.625 mg) is increasingly used to treat type 1 retinopathy of prematurity (ROP), but there remain concerns about systemic toxicity. A much lower dose may be effective while reducing systemic risk. Objective: To find a dose of intravitreous bevacizumab that was lower than previously used for severe ROP, was effective in this study, and could be tested in future larger studies. Design, Setting, and Participants: Between May 2015 and September 2016, 61 premature infants with type 1 ROP in 1 or both eyes were enrolled in a masked, multicenter, phase 1 dose de-escalation study...
April 27, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28444950/optical-coherence-tomography-evaluation-of-patients-with-macula-off-retinal-detachment-after-different-postoperative-posturing-a-randomized-pilot-study
#2
Enrico Peiretti, Francesco Nasini, Elisa Buschini, Giulia Caminiti, Sarit Y Lesnik Oberstein, Alissa Willig, Heico M Bijl, Marco Mura
PURPOSE: To assess the presence of outer and inner retinal folds (RFs) and drop-out of the ellipsoid zone (EZ) occurring after surgical repair of macula-off rhegmatogenous retinal detachment (RRD) with different postoperative posture and preoperative use of adjuvant perfluorocarbon liquid (PFCO). METHODS: In this prospective study, 56 eyes of 56 consecutive patients affected by RRD were subjected to 23- or 25-gauge pars plana vitrectomy (PPV). The patients were randomized in four groups (14 prone 5 hr without PFCO, 14 supine 5 hr without PFCO, 14 prone 5 hr with PFCO and 14 supine 5 hr with PFCO) and followed up with spectral domain optical coherence tomography (SD-OCT)...
April 26, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28420906/comparison-of-ultrasound-and-ultrasound-plus-nerve-stimulator-guidance-axillary-plexus-block
#3
Gokhan Demirelli, Semih Baskan, Isil Karabeyoglu, Ismail Aytac, Dilsen Hatice Ornek, Alper Erdogmus, Mustafa Baydar
OBJECTIVE: To evaluate the characteristics of axillary plexus blockade applied using ultrasound only and using ultrasound together with nerve stimulator in patients undergoing planned forearm, wrist or hand surgery. METHODS: This randomised, prospective, double-blinded, single-centre study was conducted at Ankara Numune Training and Research Hospital, Ankara, Turkey, from November 2014 to August 2015, and comprised patients undergoing forearm, wrist or hand surgery...
April 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28418609/real-time-measurement-of-needle-forces-and-acute-pressure-changes-during-intravitreal-injections
#4
Logan Christensen, Ashlee Cerda, Jeffrey L Olson
BACKGROUND: The purpose of this study was to use a physiological pressure transducer to measure real-time, continuous pressure changes in an ex-vivo study model of porcine eyes to record the amount of force needed for scleral penetration and to measure acute IOP rise during intravitreal injections. METHODS: A pressure transducer was inserted into the anterior chamber of 30 fresh porcine eyes and intraocular pressure was measured two seconds prior to intravitreal injection until two seconds after...
April 18, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28412068/vitreous-amyloidosis-ocular-systemic-and-genetic-insights
#5
Pradeep Venkatesh, Harathy Selvan, Sundararajan Baskar Singh, Divya Gupta, Seema Kashyap, Shreyas Temkar, Varun Gogia, Koushik Tripathy, Rohan Chawla, Rajpal Vohra
PURPOSE: To report the unique clinical and surgical characteristics encountered in eyes with vitreous amyloidosis. Systemic evaluation and visual outcome after vitrectomy are discussed. A novel mutation in the transthyretin gene (TTR) in Indian patients with familial amyloid polyneuropathy (FAP) is described. DESIGN: Retrospective, observational study. PARTICIPANTS: Ten eyes of 5 patients from 2 pedigrees with a diagnosis of vitreous amyloidosis...
April 12, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28410708/twenty-nine-gauge-dual-chandelier-retroillumination-for-the-non-open-sky-continuous-curvilinear-capsulorhexis-in-the-penetrating-keratoplasty-triple-procedure
#6
Shunji Yokokura, Takehiro Hariya, Wataru Kobayashi, Yasuhiko Meguro, Kohji Nishida, Toru Nakazawa
We describe a technique for the penetrating keratoplasty (PKP) triple procedure that uses 29-gauge dual-chandelier illumination during creation of a non-open-sky continuous curvilinear capsulorhexis (CCC). The chandeliers are inserted through the pars plana into the vitreous cavity through the bulbar conjunctiva at the 3 o'clock and 9 o'clock positions. We compared this approach with that of a core vitrectomy, in which a single 25-gauge port is inserted into the vitreous cavity transconjunctivally through the upper temporal pars plana...
March 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28396814/the-histopathological-finding-of-the-surgically-extracted-atypical-dome-shaped-choroidal-osteoma
#7
Hirona Bessho, Hisanori Imai, Atsushi Azumi
Purpose. To report a case of atypical dome-shaped choroidal osteoma, which was diagnosed by histopathological finding of surgically extracted tumor. Case Report. A 35-year-old woman presented with visual field abnormality in the left eye (OS). Her best-corrected visual acuity with Landolt ring chart was 1.0 OS. The funduscopic examination revealed a yellowish dome-shaped choroidal tumor located in the temporal side of the macula with exudative retinal detachment. 25-gauge pars plana vitrectomy and the extraction of the tumor were performed for the definitive diagnosis...
2017: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/28390161/sonographic-visualization-of-the-posterior-cutaneous-nerve-of-the-forearm-technique-and-validation-using-perineural-injections-in-a-cadaveric-model
#8
Eugene Maida, Mary M Chiavaras, Elena J Jelsing, Shawn W O'Driscoll, Wojciech Pawlina, Jay Smith
OBJECTIVES: To determine the ability to sonographically identify the posterior cutaneous nerve of the forearm (PCNF) and its distal epicondylar branches using sonographically guided perineural injections in an unembalmed cadaveric model. METHODS: A single experienced operator used a 12-3-MHz linear array transducer to identify the PCNF and its distal epicondylar region branches in 10 unembalmed cadaveric specimens (6 right and 4 left) obtained from 10 donors. Sonographically guided perineural PCNF injections were then completed with a 22-gauge, 38-mm stainless steel needle to deliver 0...
April 8, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28389702/cooperative-robot-assistant-for-vitreoretinal-microsurgery-development-of-the-rvrms-and-feasibility-studies-in-an-animal-model
#9
Yi-Qi Chen, Ji-Wei Tao, Ling-Ya Su, Liang Li, Shi-Xin Zhao, Yang Yang, Li-Jun Shen
PURPOSE: The purpose of the study was to describe the development of a robotic aided surgical system named RVRMS (robotic vitreous retinal microsurgery system) and to evaluate the capability for using it to perform vitreoretinal surgery. METHODS: The RVRMS was designed and built to include the key components of two independent arms. End-effectors of each arm fix various surgical instruments and perform intraocular manipulation. To evaluate properly the RVRMS, robot-assisted 23-gauge surgical tasks including endolaser for retinal photocoagulation, pars plana vitrectomy (PPV), retinal foreign body removal and retinal vascular cannulation were performed in two different sizes of an animal model...
April 8, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28376039/residual-intraretinal-edema-after-25-gauge-vitrectomy-and-macular-pucker-removal-is-intraoperative-sustained-release-dexamethasone-a-real-treatment-option
#10
Gianluca Guidi, Giamberto Casini, Guido Ripandelli, Paolo Piaggi, Flavio Dalle Lucche, Mariasole Sartini, Pasquale Loiudice, Francesco Nasini, Mario Stirpe, Stefano Lazzeri
PURPOSE: To investigate the efficacy and safety of intraoperative slow-release dexamethasone implant and 25-gauge (G) vitrectomy plus epiretinal membrane removal in patients affected by idiopathic macular pucker. METHODS: In this randomized, clinical, multicenter study, 60 eyes of 60 pseudophakic eyes having idiopathic macular pucker were enrolled. Thirty eyes underwent 25-G pars plana vitrectomy and internal limiting membrane peeling ("Control group"), whereas 30 eyes underwent 25-G pars plana vitrectomy and internal limiting membrane peeling combined with dexamethasone implant ("DEX group")...
April 3, 2017: Retina
https://www.readbyqxmd.com/read/28375713/comparing-spinal-blockade-effectiveness-and-maternal-hemodynamics-using-25-gauge-and-29-gauge-spinal-needles-with-the-same-volumetric-flow-rate-in-patients-undergoing-caesarean-section
#11
Taner Ciftci, Hayrettin Daskaya, Serdar Efe
Spinal needles with different diameters can be used to prevent side effects in patients undergoing spinal anaesthesia. However, the velocity of local anaesthetic changes through the spinal needle depending on the diameter of it. Local anaesthetic injection velocity has been reported to be associated with the spinal block level. We aimed to compare spinal needles of different diameters with the same local anaesthetic volumetric flow rate in terms of spinal blockade and hemodynamics in obstetric patients. Eighty-four patients received spinal anaesthesia by either a 25G needle or 29G with the same volumetric flow rate...
April 4, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28372658/a-case-of-paradoxical-presentation-of-a-postural-postdural-puncture-headache-after-combined-spinal-epidural-anesthesia
#12
John W Bordlee, Burton D Beakley, Rayomond Mody, Anne P McConville, Jonathan T Weed, Brian P McClure, Peter J Foldes, Jonathan G Ma, Alan D Kaye, Jonathan P Eskander
We report a case of paradoxical presentation of a postural postdural puncture headache secondary to dural puncture with a 25-gauge Whitacre needle for combined spinal-epidural anesthesia. This 27-year-old female patient presented to the emergency department with elevated blood pressure and a global headache 9 days after administration of epidural anesthesia for a spontaneous vaginal delivery after an uncomplicated pregnancy. The patient reported that the headache was more intense when lying down and immediately improved when she sat or stood up from a recumbent position...
May 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28370499/microtopography-guided-conductive-patterns-of-liquid-driven-graphene-nanoplatelet-networks-for-stretchable-and-skin-conformal-sensor-array
#13
Youngjin Park, Jongwon Shim, Suyeon Jeong, Gi-Ra Yi, Heeyeop Chae, Jong Wook Bae, Sang Ouk Kim, Changhyun Pang
Flexible thin-film sensors have been developed for practical uses in invasive or noninvasive cost-effective healthcare devices, which requires high sensitivity, stretchability, biocompatibility, skin/organ-conformity, and often transparency. Graphene nanoplatelets can be spontaneously assembled into transparent and conductive ultrathin coatings on micropatterned surfaces or planar substrates via a convective Marangoni force in a highly controlled manner. Based on this versatile graphene assembled film preparation, a thin, stretchable and skin-conformal sensor array (144 pixels) is fabricated having microtopography-guided, graphene-based, conductive patterns embedded without any complicated processes...
March 29, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28367324/comparative-study-of-27-gauge-versus-25-gauge-vitrectomy-for-the-treatment-of-primary-rhegmatogenous-retinal-detachment
#14
Stanislao Rizzo, Silvio Polizzi, Francesco Barca, Tomaso Caporossi, Gianni Virgili
Purpose. To compare the vitrectomy time, clinical outcomes, and complications between 27-gauge (27-G) and 25-gauge (25-G) vitrectomy in patients with primary rhegmatogenous retinal detachment (PRRD). Methods. Prospective, nonrandomized, comparative, interventional study. Forty consecutive patients with PRRD were recruited. Twenty patients underwent the 27-gauge procedure and twenty patients had the 25-gauge procedure. The main outcome measure of the study was the actual vitrectomy time. Results. The mean duration of vitreous removal was 23...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28358744/short-term-outcomes-of-hybrid-23-25-and-27-gauge-vitrectomy-for-complex-diabetic-tractional-retinal-detachment-repair
#15
M Ali Khan, Wasim A Samara, Jason Hsu, Sunir Garg
PURPOSE: To describe the short-term outcomes of complex diabetic retinal detachment repair using hybrid 23-gauge or 25-gauge vitrectomy instruments with a 27-gauge vitrectomy system. METHODS: Retrospective, interventional, consecutive case series. Ten eyes of 10 patients undergoing hybrid pars plana vitrectomy for diabetic tractional retinal detachment were reviewed. RESULTS: Combined use of 25-gauge and 27-gauge instrumentation was used in 8 of 10 eyes and combined use of 23-gauge and 27-gauge instrumentation in 2 of 10 eyes...
March 29, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28338490/small-volume-injections-evaluation-of-volume-administration-deviation-from-intended-injection-volumes
#16
Matthew K Muffly, Michael I Chen, Rebecca E Claure, David R Drover, Bradley Efron, William L Fitch, Gregory B Hammer
BACKGROUND: In the perioperative period, anesthesiologists and postanesthesia care unit (PACU) nurses routinely prepare and administer small-volume IV injections, yet the accuracy of delivered medication volumes in this setting has not been described. In this ex vivo study, we sought to characterize the degree to which small-volume injections (≤0.5 mL) deviated from the intended injection volumes among a group of pediatric anesthesiologists and pediatric postanesthesia care unit (PACU) nurses...
March 23, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28333880/twenty-five-gauge-pars-plana-vitrectomy-in-complex-retinal-detachments-associated-with-giant-retinal-tear
#17
Vinod Kumar, Devesh Kumawat, Anju Bhari, Parijat Chandra
PURPOSE: To study the structural and functional outcomes of 25-gauge pars plana vitrectomy in giant retinal tear-associated retinal detachments. METHODS: Seventeen eyes of 17 patients with giant retinal tear, who underwent 25-gauge pars plana vitrectomy over a period of 15 months at a tertiary eye care center by a single surgeon, were recruited in this retrospective interventional study. RESULTS: Giant retinal tears were mostly traumatic (35...
March 22, 2017: Retina
https://www.readbyqxmd.com/read/28333857/successful-closure-of-full-thickness-macular-holes-secondary-to-macular-vitelliform-lesions
#18
Justin C Galvin, Brian E Chua, Adrian T Fung
PURPOSE: To describe the first reported cases of full-thickness macular holes secondary to vitelliform lesions that were successfully closed with vitrectomy surgery and gas tamponade. METHODS: Two female patients developed visual loss secondary to bilateral vitelliform lesions and associated full-thickness macular holes. The patients underwent 25-gauge pars plana vitrectomy, internal limiting membrane peeling, and 26% sulfur hexafluoride gas, followed by 3 days of face-down positioning...
March 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28333431/ultrahigh-self-sensing-performance-of-geopolymer-nanocomposites-via-unique-interface-engineering
#19
Shuguang Bi, Ming Liu, Jingjing Shen, Xiao Matthew Hu, Liying Zhang
Monitoring and assessment of the health of a civil structural material are the critical requirements to ensure its safety and durability. In this work, a coating strategy on carbon nanotubes (CNTs) was employed for the dispersion of CNTs in geopolymer matrix. The geopolymer nanocomposites prepared exhibited ultrahigh self-sensing performance based on the unique behaviors of SiO2 coating on CNTs in the geopolymer matrix. The SiO2 layer on CNTs was partially or fully removed during the fabrication process to restore the conductive nature of CNTs, facilitating the dispersion of CNTs and forming well-connected 3D electrical conductive networks...
March 30, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28332863/male-and-female-worldsid-and-post-mortem-human-subject-responses-in-full-scale-vehicle-tests
#20
Narayan Yoganandan, John Humm, Frank Pintar, Heather Rhule, Kevin Moorhouse, Brian Suntay, Jim Stricklin, Rodney Rudd, Matthew Craig
Structured ABSTRACT Objective: To compare the responses of male and female WorldSID dummies with post mortem human subject (PMHS) responses in full-scale vehicle tests. METHODS: Tests were conducted according to the FMVSS-214 protocols and using the United States Side impact New Car Assessment Program change in velocity to match PMHS experiments, published earlier. Moving deformable barrier (MDB) tests were conducted with the male and female surrogates in the left front and left rear seats...
March 23, 2017: Traffic Injury Prevention
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