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retrobulbar block

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https://www.readbyqxmd.com/read/29416247/effect-of-the-addition-of-rocuronium-to-2-lignocaine-in-peribulbar-block-for-cataract-surgery
#1
Vishalakshi Patil, Allauddin Farooqy, Balaraju Thayappa Chaluvadi, Vinayak Rajashekhar, Ashwini Malshetty
Background and Aims: Peribulbar anesthesia is associated with delayed orbital akinesia compared with retrobulbar anesthesia. To test the hypothesis that rocuronium added to a mixture of local anesthetics (LAs) could improve speed of onset of akinesia in peribulbar block (PB), we designed this study. This study examined the effects of adding rocuronium 5 mg to 2% lignocaine with adrenaline to note orbital and eyelid akinesia in patients undergoing cataract surgery. Material and Methods: In a prospective, randomized, double-blind study, 100 patients were equally randomized to receive a mixture of 0...
October 2017: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/29415860/development-of-an-ultrasound-guided-technique-for-retrobulbar-nerve-block-in-dromedary-camels-a-cadaveric-study
#2
Adel M Badawy, Eman A Eshra
OBJECTIVE: Description of an ultrasound (US)-guided technique for retrobulbar nerve blockade in dromedary (Camelus dromedarius) cadavers. STUDY DESIGN: Prospective experimental cadaveric study that was carried out in three phases: phase I: anatomical dissection and development of US-guided technique; phase II: methylene blue (MB) injection; phase III: contrast medium (CM), US-guided injections with computed tomography (CT) control. ANIMALS: A total of 36 orbits from 18 heads were obtained from 18 dromedary cadavers...
November 7, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29342845/anesthetic-preconditioning-as-endogenous-neuroprotection-in-glaucoma
#3
Tsung-Han Chou, Ganeswara Rao Musada, Giovanni Luca Romano, Elizabeth Bolton, Vittorio Porciatti
Blindness in glaucoma is the result of death of Retinal Ganglion Cells (RGCs) and their axons. RGC death is generally preceded by a stage of reversible dysfunction and structural remodeling. Current treatments aimed at reducing intraocular pressure (IOP) are ineffective or incompletely effective in management of the disease. IOP-independent neuroprotection or neuroprotection as adjuvant to IOP lowering in glaucoma remains a challenge as effective agents without side effects have not been identified yet. We show in DBA/2J mice with spontaneous IOP elevation and glaucoma that the lifespan of functional RGCs can be extended by preconditioning RGCs with retrobulbar lidocaine in one eye at four months of age that temporary blocks RGC axonal transport...
January 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29284873/optimal-dose-of-dexmedetomidine-retrobulbar-anesthesia-during-phacoemulsification-cataract-surgery
#4
Ahmed Ahmed Nagy, Saber Hamed El-Sayd, Ahmed Abdelaziz Ahmed, Ghada Zin-Eldin Rajab
Background: The cataract surgery anesthesia should be to make the procedure as safe and as satisfactory as possible for all concerned. The recent progress in anesthesia and surgery now allow cataract extraction to be done with minimal physiological changes to the patient. We aimed in the study to compare between two different doses of dexmedetomidine combined with lidocaine and bupivacaine during retrobulbar anesthesia for cataract extraction by phacoemulsification. Materials and Methods: This study was done on forty patients with cataract...
October 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/29239798/retrobulbar-hematoma-a-systematic-review-of-factors-related-to-outcomes
#5
Brian Christie, Lisa Block, Yue Ma, Alexandra Wick, Ahmed Afifi
INTRODUCTION: Retrobulbar hematoma (RBH), a rare but serious condition, can result in permanent vision loss. Although it is a known complication following trauma or facial fracture reduction, sinus surgery, or blepharoplasty, factors related to patient outcomes are not well-defined. A systematic review was performed to determine the relation of patient/treatment factors to outcomes. METHODS: Articles retrieved from a PubMed search (1989-2017) were reviewed. Demographic information, etiology, symptoms, and final vision outcomes were analyzed using Fisher's exact tests, single and multiple predictor logistic regression...
November 24, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/29121356/pain-associated-with-a-subconjunctival-cefazolin-lidocaine-mixture-in-retinal-surgery-a-randomized-control-trial
#6
Michael Y K Mak, Peng Yan, Jonathan Park, Lavnish Joshi, Daniel Warder, Cassandra Lee, Husayn Gulamhusein, Robert G Devenyi, Wai-Ching Lam
BACKGROUND AND OBJECTIVE: The purpose of this randomized, single-masked clinical trial is to explore whether cefazolin mixed with 2% lidocaine can reduce pain. PATIENTS AND METHODS: Patients naïve to ophthalmic surgery were randomized to subconjunctival injection of either a 0.5 mL cefazolin-balanced salt solution (0.3 mL cefazolin and 0.2 mL balanced salt solution) or 0.5 mL cefazolin-lidocaine solution (0.3 mL cefazolin and 0.2 mL 2% lidocaine) during retinal surgery with a retrobulbar block...
November 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28991108/patient-harm-in-cataract-surgery-a-series-of-adverse-events-in-massachusetts
#7
Sarah A Roberto, Joseph Bayes, Paul E Karner, Michael G Morley, Karen C Nanji
Massachusetts state agencies received reports of 37 adverse events (AEs) involving cataract surgery from 2011 to 2015. Fifteen were anesthesia related, including 5 wrong eye blocks, 3 cases of hemodynamic instability, 2 retrobulbar hematoma/hemorrhages, and 5 globe perforations resulting in permanent loss of vision. While Massachusetts' reported AEs likely underrepresent the true number of AEs that occur during cataract surgery, they do offer useful signal data to indicate the types of patient harm occurring during these procedures...
October 5, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28944317/comparison-of-regional-vs-general-anesthesia-for-surgical-repair-of-open-globe-injuries-at-a-university-referral-center
#8
Andrew J McClellan, Jacquelyn J Daubert, Nidhi Relhan, Kimberly D Tran, Harry W Flynn, Steven Gayer
PURPOSE: This study compares the clinical features and physician selection of either Regional Anesthesia (peribulbar or retrobulbar block) with Monitored Anesthesia Care (RA-MAC) or General Anesthesia (GA) for open globe injury repair. DESIGN: A non-randomized, comparative, retrospective case series at a University Referral Center. PARTICIPANTS: All adult repairable open globe injuries receiving primary repair between January 1st, 2004 and December 31st, 2014 (11 years)...
May 2017: Ophthalmology Retina
https://www.readbyqxmd.com/read/28868910/-orbital-compartment-syndrome-the-most-frequent-cause-of-blindness-following-facial-trauma
#9
Gusztáv Klenk, József Katona, Gábor Kenderfi, János Lestyán, Katalin Gombos, Andor Hirschberg
INTRODUCTION: Although orbital compartment syndrome is a rare condition, it is still the most common cause of blindness following simple or complicated facial fractures. Its pathomechanism is similar to the compartment syndrome in the limb. Little extra fluid (blood, oedema, brain, foreign body) in a non-space yielding space results with increasingly higher pressures within a short period of time. Unless urgent surgical intervention is performed the blocked circulation of the central retinal artery will result irreversible ophthalmic nerve damage and blindness...
September 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28592279/the-effect-of-post-traumatic-stress-disorder-on-intra-operative-analgesia-in-a-veteran-population-during-cataract-procedures-carried-out-using-retrobulbar-or-topical-anesthesia-a-retrospective-study
#10
Yuna Rapoport, Laura L Wayman, Amy S Chomsky
BACKGROUND: A growing proportion of veterans treated at the Veterans Health Administration (VA) have a history of post-traumatic-stress-disorder (PTSD), and there exists a higher rate of PTSD amongst veterans than the general population. The purpose of this study is to determine the correlation between PTSD and intra-operative analgesia, intra-operative time, and anesthesia type for cataract surgery in a veteran population. Secondary objectives are to determine if patient age, and first or second eye surgery affect intra-operative pain control or are correlated with type of anesthesia modality...
June 7, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28492439/retrobulbar-block-in-pediatric-vitreoretinal-surgery-eliminates-the-need-for-intraoperative-fentanyl-and-postoperative-analgesia-a-randomized-controlled-study
#11
Lan Yao, Hong Zhao, Bailin Jiang, Yi Feng
BACKGROUND AND OBJECTIVES: Pediatric ophthalmologic surgery is traditionally accomplished by general anesthesia with opioids, but respiratory depression remains a major concern. Our study compared the efficacy of retrobulbar block with systemic fentanyl on pain, hemodynamic, and stress response in pediatric vitreoretinal surgery. METHODS: A prospective double-blind, randomized controlled study was performed comparing retrobulbar block with intravenously administered fentanyl in 28 children aged 1 to 6 years undergoing vitreoretinal surgery...
July 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28450776/brainstem-anesthesia-after-retrobulbar-block-a-case-report-and-review-of-literature
#12
Kumale Tolesa, Girum W Gebreal
BACKGROUND: Retro-bulbar anesthesia is one of the most common regional blocks used for intraocular surgeries. Complications associated with regional blocks may be limited to the eye or may be systemic. CASE REPORT: After a retro-bulbar block for glaucoma surgery, a 60-year-old man developed loss of consciousness, apnea with hypotension and bradycardia-features of brainstem anesthesia. We present the clinical features, treatment and comments on how to prevent the problem as well as a review of the literature on reported cases...
November 2016: Ethiopian Journal of Health Sciences
https://www.readbyqxmd.com/read/28060246/unsuspected-conjunctival-orbital-dermoid-cyst-aids-in-diagnosis
#13
Frederick A Jakobiec, Fouad R Zakka, Alice Lorch
A 25-year-old man with Type 1 diabetes mellitus experienced rapid visual decline and was scheduled for right cataract surgery. At the time of administering an inferotemporal retrobulbar block, a white discharge appeared spontaneously on the surface of the globe. Superotemporally a cyst was found and its contents were subtotally evacuated. Microscopically, eosinophilic, acellular material with chatter artifact and small vacuoles was detected and initially thought to represent a lens choristoma. This material stained moderately with the periodic acid Schiff method and was focally Congo red positive without apple green birefringence; it also stained blue with the Masson trichrome method...
September 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28002113/techniques-for-learning-descemet-membrane-endothelial-keratoplasty-for-eyes-of-asian-patients-with-shallow-anterior-chamber
#14
Takahiko Hayashi, Itaru Oyakawa, Naoko Kato
PURPOSE: To describe several essential surgical techniques that overcome difficulties in performing Descemet membrane endothelial keratoplasty (DMEK) for inexperienced surgeons, especially those who perform DMEK on eyes of Asian patients. METHODS: Nine eyes of 9 Asian patients with bullous keratopathy who underwent DMEK were analyzed retrospectively. All patients were given a diuretic such as D-mannitol or acetazolamide shortly before surgery, with retrobulbar anesthesia and a Nadbath facial nerve block...
March 2017: Cornea
https://www.readbyqxmd.com/read/27996187/gasserian-ganglion-and-retrobulbar-nerve-block-in-the-treatment-of-ophthalmic-postherpetic-neuralgia-a-case-report
#15
Jie Huang, Zhongge Ni, Philip Finch
OBJECTIVES: Varicella zoster virus reactivation can cause permanent histological changes in the central and peripheral nervous system. Neural inflammatory changes or damage to the dorsal root ganglia sensory nerve fibers during reactivation can lead to postherpetic neuralgia (PHN). For PHN of the first division of the fifth cranial nerve (ophthalmic division of the trigeminal ganglion), there is evidence of inflammatory change in the ganglion and adjacent ocular neural structures. First division trigeminal nerve PHN can prove to be difficult and sometimes even impossible to manage despite the use of a wide range of conservative measures, including anticonvulsant and antidepressant medication...
September 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/27889503/gamma-knife-radiosurgery-for-uveal-metastases-report-of-three-cases-and-a-review-of-the-literature
#16
REVIEW
William J Ares, Daniel Tonetti, Jenny Y Yu, Edward A Monaco, John C Flickinger, L Dade Lunsford
PURPOSE: Uveal metastases are ophthalmologic tumors that have historically been treated by fractionated external beam radiation therapy or invasive brachytherapy. The need for rapid response and less invasive management options led the authors to explore the use of Gamma Knife stereotactic radiosurgery (SRS) for this common problem. DESIGN: Interventional case series. METHODS: To prevent eye movement during the procedure, all 3 patients underwent a retrobulbar anesthetic block followed by magnetic resonance imaging to detect the target...
February 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27832280/imaging-of-ocular-perforation-after-retrobulbar-block
#17
Stanislao Rizzo, Andrea Giorni, Alfonso Savastano
No abstract text is available yet for this article.
November 10, 2016: JAMA Ophthalmology
https://www.readbyqxmd.com/read/27749747/contralateral-anesthesia-in-two-patients-after-retrobulbar-block
#18
Quraish Ghadiali, Larissa K Ghadiali, William M Schiff, Jeffrey G Odel
PURPOSE: To report a case series of two patients with contralateral anesthesia after retrobulbar block. METHODS: Retrospective review of two cases and review of the literature. RESULTS: Two patients of one practitioner received contralateral anesthesia after retrobulbar block for posterior segment surgery. Patient 1 suffered from transient contralateral akinesia, whereas Patient 2 experienced transient contralateral amaurosis. CONCLUSION: Posterior spread of anesthetics is a rare but potentially serious complication of retrobulbar anesthesia caused by spread of anesthetics along the optic nerve sheath...
October 5, 2016: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/27554191/-amaurosis-and-contralateral-cranial-nerve-pairs-iii-and-vi-paralysis-after-peribulbar-block-case-report
#19
Fábio Caetano Oliveira Leme, Eduardo Toshiyuki Moro, Alexandre Alberto Fontana Ferraz
BACKGROUND AND OBJECTIVES: Peribulbar anesthesia (PBA) has emerged as a safer option compared with intraconal retrobulbar block. Still, PBA may not be considered without risk. Numerous complications have been described when performing this technique. This report aims to describe a rare case of amaurosis and contralateral paralysis while attempting to perform a PBA. CASE REPORT: Male patient, 75-year old, physical status ASA II, undergoing cataract surgery by phacoemulsification with intraocular lens implantation...
August 20, 2016: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/27329086/visual-evoked-potentials-in-the-horse
#20
L Ström, B Ekesten
BACKGROUND: Electrical potentials generated in the central nervous system in response to brief visual stimuli, flash visual evoked potentials (FVEPs), can be recorded non-invasively over the occipital cortex. FVEPs are used clinically in human medicine and also experimentally in a number of animal species, but the method has not yet been evaluated in the horse. The method would potentially allow the ophthalmologist and equine clinician to evaluate visual impairment caused by disorders affecting post-retinal visual pathways...
June 21, 2016: BMC Veterinary Research
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