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https://www.readbyqxmd.com/read/28319187/the-impact-of-high-grade-glial-neoplasms-on-human-cortical-electrophysiology
#1
S Kathleen Bandt, Jarod L Roland, Mrinal Pahwa, Carl D Hacker, David T Bundy, Jonathan D Breshears, Mohit Sharma, Joshua S Shimony, Eric C Leuthardt
OBJECTIVE: The brain's functional architecture of interconnected network-related oscillatory patterns in discrete cortical regions has been well established with functional magnetic resonance imaging (fMRI) studies or direct cortical electrophysiology from electrodes placed on the surface of the brain, or electrocorticography (ECoG). These resting state networks exhibit a robust functional architecture that persists through all stages of sleep and under anesthesia. While the stability of these networks provides a fundamental understanding of the organization of the brain, understanding how these regions can be perturbed is also critical in defining the brain's ability to adapt while learning and recovering from injury...
2017: PloS One
https://www.readbyqxmd.com/read/28315459/dynamic-reorganization-of-intrinsic-functional-networks-in-the-mouse-brain
#2
Joanes Grandjean, Maria Giulia Preti, Thomas Aw Bolton, Michaela Buerge, Erich Seifritz, Christopher R Pryce, Dimitri Van De Ville, Markus Rudin
Functional connectivity (FC) derived from resting-state functional magnetic resonance imaging (rs-fMRI) allows for the integrative study of neuronal processes at a macroscopic level. The majority of studies to date have assumed stationary interactions between brain regions, without considering the dynamic aspects of network organization. Only recently has the latter received increased attention, predominantly in human studies. Applying dynamic FC (dFC) analysis to mice is attractive given the relative simplicity of the mouse brain and the possibility to explore mechanisms underlying network dynamics using pharmacological, environmental or genetic interventions...
March 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28306578/selective-low-volume-nerve-block-for-the-open-surgical-fixation-of-a-midshaft-clavicle-fracture-in-a-conscious-high-risk-patient-a-case-report
#3
Carlos I Salvadores de Arzuaga, José M Naya Sieiro, Oscar Salmeron Zafra, Miguel A González Posada, Esther Marquez Martínez
We report a case of successful intraoperative management using only low-volume regional anesthesia for the open surgical fixation of a traumatic clavicle fracture in a conscious 69-year-old man with severe chronic obstructive pulmonary disease. To avoid general anesthesia, we provided low-volume C5 and C6 nerve root blocks along with a superficial cervical plexus block using only 9 mL of anesthetic solution to avoid the often encountered complications of higher volume injections. Throughout the procedure, the patient remained comfortable and cooperative with stable hemodynamics and respiration...
March 16, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28303363/test-retest-reliability-of-scotopic-full-field-electroretinograms-in-rabbits
#4
Jan Luebke, Alexandra Anton, Michael Bach
PURPOSE: To explore test-retest reliability of standard scotopic full-field ERG measurements in New Zealand White rabbits. The ERG is widely used for testing of retinal integrity after any ocular treatment. We here present detailed stimulus-response dependencies for single healthy and untreated animals, concentrating on test-retest reproducibility. MATERIALS AND METHODS: Five New Zealand White rabbits (aged 8-10 weeks, weight about 2.0-2.5 kg) underwent binocular ERG measurements after intramuscular anesthesia and pharmaceutical pupillary dilatation at a baseline day and 10 days later...
March 16, 2017: Documenta Ophthalmologica. Advances in Ophthalmology
https://www.readbyqxmd.com/read/28303086/anesthesia-provision-in-disasters-and-armed-conflicts
#5
REVIEW
Miguel Trelles Centurion, Rafael Van Den Bergh, Henry Gray
PURPOSE OF REVIEW: Disasters and armed conflicts are characterized by high numbers of trauma cases, and occur mainly in developing countries where the healthcare response is already impaired, resulting in an inadequate response. Aside of the trauma cases, other surgical health conditions are also still present and require urgent care. Surgical care needs are different from context to context and depend on local means and capabilities. RECENT FINDINGS: Doctors without Borders (MSF) has proven that even in precarious situations, safe administration of anesthesia is possible, and the "do no harm" principle can and must be upheld...
2017: Current Anesthesiology Reports
https://www.readbyqxmd.com/read/28298800/a-case-of-subclavian-artery-aneurysm-with-history-of-ischemic-heart-disease-operated-under-cervical-epidural-anesthesia
#6
Amrita Rath, J Abhinay, Sandeep Loha, Atul Kumar Singh
Subclavian artery aneurysm is usually operated under general anesthesia (GA), but in specific situations, it can also be conducted under regional anesthesia (RA) such as cervical epidural anesthesia (CEA). A 48-year-old male presented with chief complaint of progressive swelling in the right side of the neck for the past 3 months following trauma. He was diagnosed as subclavian artery aneurysm, and surgical intervention was advised. He had previous history of angina 4 months back for which tablet aspirin 75 mg and tablet clopidogrel 75 mg once daily was prescribed...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298799/case-of-neurological-complication-following-subarachnoid-block-in-a-patient-with-unsuspected-coagulopathy
#7
Arun Mathur, C Venkatesh Nagappa
Subarachnoid block (SAB) is an extensively used regional anesthesia technique for many surgeries. Neurological complications are rare following spinal anesthesia. We are reporting neurological complication in a patient the following appendectomy under SAB with unsuspected coagulopathy. The complication was noticed early and managed conservatively with a high dose of intravenous steroid and improved drastically in a short period.
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298798/regional-anesthesia-in-patients-of-aged-99-years-in-clopidogrel-use
#8
Bruno Brasileiro, Luiz Eduardo Imbelloni
The risk of neuraxial block in patients treated with antiplatelet drugs are uncertain. Elderly patients often have low physiological reserve, delaying surgery can lead to a high rate of morbidity and mortality. The aim of this paper is to present a case of a patient with 99 years using clopidogrel undergoing regional anesthesia for surgical treatment of hip fracture without complications.
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298796/anaesthetic-management-of-a-neuroectodermal-tumor-of-infancy-a-rare-case-report
#9
Pravin Ubale, Namita Baldwa, Pinakin Gujjar
Melanotic neuroectodermal tumor of infancy is a relatively uncommon osteolytic-pigmented neoplasm that primarily affects the jaws of infants. We report a 5-month-old male child who presented with a swelling in the right upper tooth region of upper jaw in which we face difficult mask ventilation as well as difficult intubation. Wide surgical excision was performed under general anesthesia. The uneventful course of anesthesia in the presented case was due to the thorough systemic evaluation and careful anesthetic strategy...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298787/caudal-levobupivacaine-supplemented-with-caudal-or-intravenous-clonidine-in-children-undergoing-infraumbilical-surgery-a-randomized-prospective-double-blind-study
#10
Laxmi Ramya Potti, Yatish Bevinaguddaiah, S Archana, Vinayak Seenappa Pujari, C Manjunath Abloodu
BACKGROUND: Caudal analgesia is the most popular regional anesthesia technique in pediatric population for intraoperative and postoperative analgesia. Clonidine, an α2 agonist, prolongs analgesia without causing significant respiratory depression after systemic or neuraxial administration. However, the most beneficial route of its administration is still controversial. Thus, we compared the effects of caudal and intravenous (i.v) clonidine on postoperative analgesia produced by caudal levobupivacaine in children undergoing infraumbilical surgery...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298786/comparison-of-dexmedetomidine-and-magnesium-sulfate-as-adjuvants-with-ropivacaine-for-spinal-anesthesia-in-infraumbilical-surgeries-and-postoperative-analgesia
#11
Reena Makhni, Joginder Pal Attri, Payal Jain, Veena Chatrath
INTRODUCTION: Postoperative pain is a major cause of fear and anxiety in hospitalized patients and so if patients remain pain-free during this period, they can cooperate with the circumstances well, leading to early recovery. Over the last two decades, there has been considerable revival of interest in the use of regional anesthesia techniques for surgery and pain management. As very few studies have been conducted using ropivacaine with dexmedetomidine and magnesium sulfate (MgSO4) as adjuvants, the present study was undertaken with primary aims to compare the hemodynamic stability, onset and duration of sensory and motor block and with secondary aims of the postoperative analgesic effect of dexmedetomidine and MgSO4 along with ropivacaine...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298785/the-effect-of-intravenous-dexmedetomidine-compared-to-propofol-on-patients-hemodynamics-as-a-sedative-in-brachial-plexus-block-a-comparative-study
#12
Amarjeet Kumar, Chandni Sinha, Ajeet Kumar, Poonam Kumari
BACKGROUND: The quest for an ideal sedative during regional anesthesia is on. Although propofol has been accepted as a sedative intraoperatively, it can be associated with troublesome hemodynamic changes. Dexmedetomidine is a new alpha 2 agonist used widely for sedation. AIMS: In this study, we tried to compare equivalent doses of dexmedetomidine infusion with propofol with emphasis on their effect on the hemodynamics. SETTINGS AND DESIGN: Prospective, single-blinded randomized controlled trial...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298758/comparison-of-analgesic-efficacy-of-dexmedetomidine-and-midazolam-as-adjuncts-to-lignocaine-for-intravenous-regional-anesthesia
#13
Bharti Gupta, Ravinder Kumar Verma, Sudershan Kumar, Geeta Chaudhary
BACKGROUND: Intravenous regional anesthesia (IVRA) is safe, technically simple, and cost-effective technique compared to general anesthesia with success rates of 94-98% for upper and lower limb surgeries. The main disadvantage of this procedure is its limited duration for surgery, lack of postoperative analgesia, and tourniquet pain. To overcome this disadvantage, various adjuvants to lignocaine have been studied from time to time. AIM: To compare the analgesic efficacy of dexmedetomidine and midazolam as adjuncts to lignocaine for IVRA for forearm and hand surgeries...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298747/benefits-and-pitfalls-of-cadavers-as-learning-tool-for-ultrasound-guided-regional-anesthesia
#14
REVIEW
Chhavi Sawhney, Sanjeev Lalwani, Bikash Ranjan Ray, Sumit Sinha, Abhyuday Kumar
Ultrasound-guided regional anesthesia (UGRA), like other basic skills, should be learnt in a simulation laboratory before performing on the patient. Cadavers provide an ideal tool for learning sonoanatomy and skills required for performing UGRA. On the basis of preservation technique used, the cadavers can be formalin embalmed cadavers, Thiel cadavers (soft cadavers), and fresh frozen cadavers. We compared three types of cadavers for performing ultrasound-guided upper and lower limb blocks. We observed that fresh frozen and Thiel cadavers were less smelling and had more realistic appearance as compared to formalin embalmed cadavers...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28297053/general-regional-or-local-anesthesia-for-successful-radial-cephalic-arteriovenous-fistula
#15
David Shemesh, Yefim Raikhinstein, Ilya Goldin, Oded Olsha
Autogenous fistulas and in particular radiocephalic fistulas are recommended as the first vascular access for hemodialysis. Unfortunately, the rates of early failure and non-maturation are very high. For more than a decade, brachial plexus block has been proposed as the anesthesia of choice for fistula creation due to its beneficial sympathectomy-like effect, causing vasodilation and attenuation of spasm. Until recently, there was not a single randomized clinical study supporting this proposition. Because performing regional anesthesia is time-consuming and requires expertise, many surgeons prefer local or general anesthesia for vascular access surgery...
March 6, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28294508/transversus-abdominis-plane-block-for-the-diagnosis-and-treatment-of-chronic-abdominal-wall-pain-following-surgery-a-case-series
#16
Marco Baciarello, Greta Migliavacca, Maurizio Marchesini, Adriana Valente, Massimo Allegri, Guido Fanelli
OBJECTIVE: The transversus abdominis plane (TAP) block is a relatively simple regional anesthesia technique which entails the injection of local anesthetics (LA) into the interfascial plane between the internal oblique and transversus abdominis muscles, where nerves supplying the anterolateral abdominal wall course. It is widely used for acute pain management following abdominal surgical procedures. We describe a series of cases in which TAP blocks were used to aid in the diagnosis and treatment of chronic abdominal wall pain (CAWP)...
March 14, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28293468/a-method-for-independent-component-graph-analysis-of-resting-state-fmri
#17
Demetrius Ribeiro de Paula, Erik Ziegler, Pubuditha M Abeyasinghe, Tushar K Das, Carlo Cavaliere, Marco Aiello, Lizette Heine, Carol di Perri, Athena Demertzi, Quentin Noirhomme, Vanessa Charland-Verville, Audrey Vanhaudenhuyse, Johan Stender, Francisco Gomez, Jean-Flory L Tshibanda, Steven Laureys, Adrian M Owen, Andrea Soddu
INTRODUCTION: Independent component analysis (ICA) has been extensively used for reducing task-free BOLD fMRI recordings into spatial maps and their associated time-courses. The spatially identified independent components can be considered as intrinsic connectivity networks (ICNs) of non-contiguous regions. To date, the spatial patterns of the networks have been analyzed with techniques developed for volumetric data. OBJECTIVE: Here, we detail a graph building technique that allows these ICNs to be analyzed with graph theory...
March 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28289619/the-effect-of-ondansetron-and-dexamethasone-on-nausea-and-vomiting-under-spinal-anesthesia
#18
Navid Kalani, Hasan Zabetian, Mohammad Sadegh Sanie, Mansour Deylami, Mohammad Radmehr, Reza Sahraei, Hossein Kargar Jahromi, Wesam Kooti
BACKGROUND: During abdominal surgery under regional anesthesia, nausea may happen due to several contributing factors. This study compared the effects of ondansetron and dexamethasone on nausea and vomiting under spinal anesthesia. METHODS: One hundred and twenty patients of 15 to 35 years old with ASA class I and II were enrolled. Before administering either ondansetron or dexamethasone, blood pressure and heart rate of the patients were recorded. The patients received 70 mg of 5% lidocaine for spinal anesthesia...
January 2017: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/28286626/periodic-lateralized-epileptiform-discharges-can-survive-anesthesia-and-result-in-asymmetric-drug-induced-burst-suppression
#19
Edward C Mader, Louis A Cannizzaro, Frank J Williams, Saurabh Lalan, Piotr W Olejniczak
Drug-induced burst suppression (DIBS) is bihemispheric and bisymmetric in adults and older children. However, asymmetric DIBS may occur if a pathological process is affecting one hemisphere only or both hemispheres disproportionately. The usual suspect is a destructive lesion; an irritative or epileptogenic lesion is usually not invoked to explain DIBS asymmetry. We report the case of a 66-year-old woman with new-onset seizures who was found to have a hemorrhagic cavernoma and periodic lateralized epileptiform discharges (PLEDs) in the right temporal region...
February 20, 2017: Neurology International
https://www.readbyqxmd.com/read/28284817/differential-effects-of-gaseous-versus-injectable-anesthetics-on-changes-in-regional-cerebral-blood-flow-and-metabolism-induced-by-l-dopa-in-a-rat-model-of-parkinson-s-disease
#20
Zisis Bimpisidis, Carl M Öberg, Natallia Maslava, M Angela Cenci, Cornelia Lundblad
Preclinical imaging of brain activity requires the use of anesthesia. In this study, we have compared the effects of two widely used anesthetics, inhaled isoflurane and ketamine/xylazine cocktail, on cerebral blood flow and metabolism in a rat model of Parkinson's disease and l-DOPA-induced dyskinesia. Specific tracers were used to estimate regional cerebral blood flow (rCBF - [(14)C]-iodoantipyrine) and regional cerebral metabolic rate (rCMR - [(14)C]-deoxyglucose) with a highly sensitive autoradiographic method...
March 8, 2017: Experimental Neurology
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