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dexmedetomidine block

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https://www.readbyqxmd.com/read/28441717/dexmedetomidine-relieves-formaldehyde-induced-pain-in-rats-through-both-%C3%AE-2-adrenoceptor-and-imidazoline-receptor
#1
Hong Zhang, Xiang Yan, De-Gui Wang, Yu-Fang Leng, Zhan-Hai Wan, Yong-Qiang Liu, Yan Zhang
Dexmedetomidine (DEX) is a highly selective α2 adrenergic receptor agonist. In this study, we investigated the analgesic effect and the underlying mechanisms of DEX on inflammatory visceral pain in rats. Twenty-five male Sprague Dawley (SD) rats were randomly divided into 5 groups, including control, sham, low dose DEX, medium dose DEX and high dose DEX group. Pain was induced with 10% formalin and scored every 15min till 2 h-post the induction. Hematoxylin-eosin (HE) staining was used to evaluate the toxicity of DEX on spinal cord neurons...
April 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28435222/effects-of-intrathecal-dexmedetomidine-on-shivering-after-spinal-anesthesia-for-cesarean-section-a-double-blind-randomized-clinical-trial
#2
Karim Nasseri, Negin Ghadami, Bijan Nouri
BACKGROUND: Shivering is among the common troublesome complications of spinal anesthesia (SA), and causes discomfort and discontentment in parturients undergoing cesarean sections (CSs). The aim of this study was to investigate the effects of intrathecal dexmedetomidine in the prevention of shivering in those who underwent CS under SA. SUBJECTS AND METHODS: Fifty parturients planned for elective CSs under SA were enrolled in this prospective, double-blinded, controlled study and randomly divided into two equal groups...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28424537/awake-craniotomy-anesthetic-management-using-dexmedetomidine-propofol-and-remifentanil
#3
Andrea Prontera, Stefano Baroni, Andrea Marudi, Franco Valzania, Alberto Feletti, Francesca Benuzzi, Elisabetta Bertellini, Giacomo Pavesi
INTRODUCTION: Awake craniotomy allows continuous monitoring of patients' neurological functions during open surgery. Anesthesiologists have to sedate patients in a way so that they are compliant throughout the whole surgical procedure, nevertheless maintaining adequate analgesia and anxiolysis. Currently, the use of α2-receptor agonist dexmedetomidine as the primary hypnotic-sedative medication is increasing. METHODS: Nine patients undergoing awake craniotomy were treated with refined monitored anesthesia care (MAC) protocol consisting of a combination of local anesthesia without scalp block, low-dose infusion of dexmedetomidine, propofol, and remifentanil, without the need of airways management...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28416997/comparison-of-intrathecal-versus-intra-articular-dexmedetomidine-as-an-adjuvant-to-bupivacaine-on-postoperative-pain-following-knee-arthroscopy-a-randomized-clinical-trial
#4
Eman A Ismail, Jehan A Sayed, Mohamed H Bakri, Reda Z Mahfouz
BACKGROUND: Postoperative pain is a common, distressing symptom following arthroscopic knee surgery. The aim of this study was to compare the potential analgesic effect of dexmedetomidine after intrathecal versus intra-articular administration following arthroscopic knee surgery. METHODS: Ninety patients undergoing unilateral elective arthroscopic knee surgery were randomly assigned into three groups in a double-blind placebo controlled study. The intrathecal dexmedetomidine group (IT) received an intrathecal block with intrathecal dexmedetomidine, the intra-articular group (IA) received an intrathecal block and intra-articular dexmedetomidine, and the control group received an intrathecal block and intra-articular saline...
April 2017: Korean Journal of Pain
https://www.readbyqxmd.com/read/28413277/efficacy-of-dexmedetomidine-with-ropivacaine-in-supraclavicular-brachial-plexus-block-for-upper-limb-surgeries
#5
Jithendra Chinnappa, Shivakumar Shivanna, Vinayak Seenappa Pujari, Tejesh Channasandra Anandaswamy
BACKGROUND AND AIMS: The primary aim of this study was to evaluate the effect of addition of dexmedetomidine on the duration of analgesia in patients undergoing upper limb surgeries under supraclavicular brachial plexus block. MATERIAL AND METHODS: Sixty patients of American Society of Anesthesiologists physical status I/II/III undergoing elective upper limb surgeries under supraclavicular brachial plexus block using nerve stimulator were randomized into two groups...
January 2017: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/28405041/supraclavicular-brachial-plexus-block-comparison-of-varying-doses-of-dexmedetomidine-combined-with-levobupivacaine-a-double-blind-randomised-trial
#6
Srinivasa Rao Nallam, Sunil Chiruvella, Swetha Karanam
BACKGROUND AND AIMS: The ideal dose of dexmedetomidine for brachial plexus block is a matter of debate. This study was carried out to evaluate 50 μg or 100 μg of dexmedetomidine added to 0.5% levobupivacaine, with regard to the duration of analgesia. Our study also sought to assess the onset and duration of sensorimotor blockade, haemodynamic effects, sedation and adverse effects. METHODS: One hundred adult patients undergoing upper limb surgeries under supraclavicular brachial plexus block were randomly allocated into two groups...
March 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28386682/-update-in-neuroanesthesiology-key-publications
#7
V-S Eckle, G Schneider
One of the aims of the Scientific Working Group Neuroanesthesia (WAKNA) of the German Society of Anesthesiology and Intensive Care Medicine is to disseminate new findings in the field of neuroscience and neuroanesthesia and to propagate novel therapeutic and diagnostic options into clinical practice. Once a year, the WAKNA displays and discusses recent noteworthy publications from the past 12 months at the German Anesthesia Meeting. In 2016, a new pharmacologic strategy with dexmedetomidine to prevent postoperative pain after craniotomy, the impact of the widely used anesthetic drug propofol on GABA receptor surface expression, a study highlighting the ultrasound-guided detection of increased intracranial pressure, and an article showing the interactions of neuromuscular blocking drugs on the BIS neuromonitoring were presented...
April 6, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28384962/comparison-of-intravenous-dexmedetomidine-with-midazolam-in-prolonging-spinal-anaesthesia-with-ropivacaine
#8
Balwinder Kaur Rekhi, Tejinderpal Kaur, Divya Arora, Pankaj Dugg
INTRODUCTION: Midazolam and dexmedetomidine both being sedatives, but the latter with additional analgesic properties is expected to prolong the duration of sensory and motor block obtained with spinal anaesthesia. AIM: To compare intravenous dexmedetomidine with midazolam and placebo with respect to sensory and motor block duration, analgesia, and sedation in patients undergoing lower limb and lower abdominal surgeries with intrathecal ropivacaine anaesthesia. MATERIALS AND METHODS: In this single blind placebo controlled trial, 60 patients, classified as American Society of Anaesthesiologists' (ASA) physical status I-II, were randomized into three groups (n=20 per group)...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28375904/the-cardioprotective-effect-of-dexmedetomidine-in-rats-is-dose-dependent-and-mediated-by-bkca-channels
#9
Friederike Behmenburg, Eileen Pickert, Alexander Mathes, André Heinen, Markus W Hollmann, Ragnar Huhn, Marc M Berger
The alpha-2 receptor agonist Dexmedetomidine (Dex) protects the heart against ischemia-reperfusion injury. We investigated the signaling cascade underlying Dex-induced acute cardioprotection, with special emphasis on large-conductance Ca2+-sensitive potassium (BKCa) channels. Rats were anesthetized with pentobarbital. Hearts were isolated, mounted on a Langendorff system and perfused with Krebs-Henseleit buffer. Hearts underwent 33 minutes of ischemia followed by 60 minutes of reperfusion. Before the beginning of ischemia, Dex was administered at different doses (0...
April 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28374183/effect-of-adding-dexmedetomidine-to-ropivacaine-on-ultrasound-guided-dual-transversus-abdominis-plane-block-after-gastrectomy
#10
Wengang Ding, Wanying Li, Xianzhang Zeng, Jinying Li, Jingjing Jiang, Changchun Guo, Wenzhi Li
OBJECTIVES: Transversus abdominis plane (TAP) block is an analgesic technique. Adding dexmedetomidine can enhance regional anesthesia. This study's aim was to evaluate whether dexmedetomidine prolonged analgesic time of TAP block after gastrectomy. METHODS: Patients scheduled for gastrectomy were randomly assigned to receive a TAP block with saline (group S), ropivacaine (group R), or ropivacaine and dexmedetomidine (group RD). Visual analogue scale (VAS) scores, postoperative nausea and vomiting (PONV) scores, sedation scores, tramadol consumption, ropivacaine concentration, and Quality of Recovery Questionnaire 40 (QoR-40) were recorded...
April 3, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28341722/sciatic-and-femoral-nerve-blockade-using-bupivacaine-alone-or-in-combination-with-dexmedetomidine-or-buprenorphine-in-cats
#11
M C Evangelista, G M Doodnaught, D T Fantoni, P V M Steagall
The aim of this study was to determine the onset and offset of antinociception after sciatic (ScN) and femoral (FN) nerve blocks. Six healthy adult cats (4.8±1.3years; 4.3±0.4 kg) were included in a randomised, crossover, blinded and controlled study. Following sedation with dexmedetomidine (25 µg/kg, intramuscular), each ScN and FN injection was performed using 0.1 ml/kg of saline (CONTROL), bupivacaine (0.46 per cent, 0.46 mg/kg; BUPI), bupivacaine and dexmedetomidine (1 µg/kg; BUPI-DEX) or bupivacaine and buprenorphine (2...
March 24, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28333707/the-effect-of-sedation-on-cortical-activation-a-randomized-study-comparing-the-effects-of-sedation-with-midazolam-propofol-and-dexmedetomidine-on-auditory-processing
#12
Michael A Frölich, Catiffaney Banks, Timothy J Ness
BACKGROUND: Every day, millions of people undergo surgical procedures facilitated by anesthesia. Yet, there is no clinically accepted measure to predict the effects of sedation or anesthesia on the central nervous system. Auditory brain activation may provide an objective and quantifiable method to measure of the effects of sedation on neuronal processing. METHODS: This is a randomized clinical trial. Forty-eight healthy volunteers were randomly assigned to receive 1 of 3 sedative drugs (midazolam [n = 11], propofol [n = 12], or dexmedetomidine [n = 12]) at a concentration adjusted to achieve mild sedation by self-rating, or to a no-drug control group (n = 13)...
May 2017: Anesthesia and Analgesia
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
#13
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
#14
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/28298772/effect-of-dexmedetomidine-as-an-adjuvant-to-0-75-ropivacaine-in-interscalene-brachial-plexus-block-using-nerve-stimulator-a-prospective-randomized-double-blind-study
#15
H D Rashmi, H K Komala
BACKGROUND: Ropivacaine, a newer local anesthetic (LA), has been increasingly used nowadays in different concentrations for peripheral nerve blocks. It has lesser cardiac toxicity and higher safety margin when compared to bupivacaine. Dexmedetomidine, a novel α2 agonist, is widely used as adjuvant to LA in peripheral nerve blocks to decrease the time of onset and increase the duration of the block. In this study, we evaluated the effect of dexmedetomidine as an adjuvant with 0.75% ropivacaine for interscalene brachial plexus block using nerve stimulator...
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
#16
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/28298753/a-prospective-randomized-trial-comparing-dexmedetomidine-and-midazolam-for-conscious-sedation-during-oocyte-retrieval-in-an-in-vitro-fertilization-program
#17
Ali Mohamed Ali Elnabtity, Mohamed Fouad Selim
BACKGROUND: Various sedative and analgesic techniques have been used for pain relief during oocyte retrieval which is the most painful part of in vitro fertilization (IVF) procedures. AIM: This study aimed at comparing dexmedetomidine and midazolam for conscious sedation in women undergoing transvaginal oocyte retrieval during an IVF program. SETTINGS AND DESIGN: Prospective randomized double-blinded comparative study. PATIENTS AND METHODS: Fifty-two patients undergoing oocyte retrieval in their first IVF cycle were randomly allocated into two equal groups...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28256096/dexmedetomidine-sedation-combined-with-caudal-anesthesia-for-lower-abdominal-and-extremity-surgery-in-ex-preterm-and-full-term-infants
#18
Katrin Waurick, Cristina Sauerland, Christiane Goeters
BACKGROUND: Awake caudal anesthesia is a potentially attractive option, because the administration of general anesthesia is associated with a high rate of respiratory complications and hemodynamic disturbances and potential neurotoxic effects. To facilitate the caudal puncture and subsequent surgical intervention, additional sedatives are commonly administered. AIM: We aimed to establish a new, safe, and effective anesthetic procedure for very young children with comorbidities...
March 2, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28253863/combined-use-of-dexmedetomidine-and-propofol-in-monitored-anesthesia-care-a-randomized-controlled-study
#19
Kyu Nam Kim, Hee Jong Lee, Soo Yeon Kim, Ji Yoon Kim
BACKGROUD: Although propofol and dexmedetomidine have been widely used for monitored anesthesia care, their adverse effects necessitate the search for better methods. Therefore, we performed this randomized controlled trial to evaluate the combined use of propofol and dexmedetomidine. METHODS: Eighty-seven adult patients undergoing hand surgery under brachial plexus block were randomly allocated to receive 1.6 μg/ml of the target effect site concentration of propofol (P group) and infusion of 0...
March 1, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28250482/efficacy-of-intravenous-dexmedetomidine-on-patient-s-satisfaction-comfort-and-sedation-during-awake-fibre-optic-intubation-in-patients-with-cervical-spondylotic-myelopathy-posted-for-elective-cervical-fixation
#20
Saikat Niyogi, Samir Basak, Amita Acharjee, Indrani Chakraborty
BACKGROUND AND AIMS: Various anaesthetic drugs, in addition to airway block, are used for producing favourable intubation conditions during awake fibre-optic intubation (AFOI), but most of them cause respiratory depression and hypoxaemia. The aim of this study was to evaluate the efficacy of intravenous (IV) dexmedetomidine (DEX) on sedation, patient comfort and cardiovascular responses during AFOI in patients with cervical spondylotic myelopathy (CSM). METHODS: This randomised, placebo-controlled, double-blinded, prospective study was conducted on 56 adult patients with cervical spondylotic myelopathy (CSM) undergoing elective cervical fixation, who were randomly allocated into two groups - Group D and Group C...
February 2017: Indian Journal of Anaesthesia
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