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dexmedetomidine block

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https://www.readbyqxmd.com/read/27891424/a-study-on-the-efficacy-of-the-addition-of-low-dose-dexmedetomidine-as-an-adjuvant-to-lignocaine-in-intravenous-regional-anaesthesia-ivra
#1
Esha Nilekani, Yvonne Menezes, Shirley Ann D'souza
INTRODUCTION: Intravenous Regional Anaesthesia (IVRA) is a simple, effective method of providing anaesthesia for short duration surgical procedures on the extremities, its chief drawbacks are tourniquet pain, short duration of block and absence of post-operative analgesia. Dexmedetomidine is known to reduce anaesthetic requirements and also provide analgesia to the patient. AIM: To evaluate the efficacy of dexmedetomidine as an adjuvant to lignocaine in IVRA with respect to the quality of the block, tourniquet pain and post-operative analgesia...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27847704/treatment-of-postoperative-pain-in-pediatric-operations-comparing-the-efficiency-of-bupivacaine-bupivacaine-dexmedetomidine-and-bupivacaine-fentanyl-for-caudal-block
#2
Hashem Jarineshin, Fereydoon Fekrat, Aida Kargar Kermanshah
BACKGROUND: Caudal analgesia is a common method for postoperative pain management in pediatric patients. Additive agents such as opioids and α2 agonists have been used to enhance the analgesic effects of local anesthetics for caudal block. OBJECTIVES: The aim of this study was to compare the additive effects of dexmedetomidine and fentanyl on bupivacaine-induced caudal analgesia in pediatric patients who had undergone elective inguinal hernia repair. METHODS: This randomized, double-blind clinical trial included children aged 1 - 5 years who were divided into three groups: the bupivacaine group (Group B) received 0...
October 2016: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/27833486/a-comparative-study-of-dexmedetomidine-and-fentanyl-as-adjuvants-to-levobupivacaine-for-caudal-analgesia-in-children-undergoing-lower-limb-orthopedic-surgery
#3
S M Elfawal, W A Abdelaal, M R Hosny
BACKGROUND: Levobupivacaine is an effective local anesthetic agent with less systemic toxicity than racemic bupivacaine, but it has short postoperative analgesic duration. Dexmedetomidine and fentanyl are promising adjuncts to provide excellent and prolonged postoperative caudal analgesia. This study compared the effects of caudal levobupivacaine plus dexmedetomidine and levobupivacaine plus fentanyl for postoperative analgesia and sedation in children undergoing lower limb orthopedic surgery...
October 2016: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/27833479/efficacy-of-dexmedetomidine-as-an-adjuvant-to-ropivacaine-in-pediatric-caudal-epidural-block
#4
Manoj Kamal, Sadik Mohammed, Saroj Meena, Geeta Singariya, Rakesh Kumar, Dilip Singh Chauhan
CONTEXT: Caudal analgesia is a reliable and an easy method to provide intraoperative and postoperative analgesia for infraumbilical surgeries in pediatric population but with the disadvantage of short duration of action after single injection. Many additives were used in combination with local anesthetics in the caudal block to prolong the postoperative analgesia. AIM: We compared the analgesic effects and side effects of dexmedetomidine added to ropivacaine in pediatric patients undergoing lower abdominal surgeries...
October 2016: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/27816166/-perineural-dexmedetomidine-effects-on-sciatic-nerve-in-rat
#5
Abdulkadir Yektaş, Murat Çabalar, Mehmet Sar, Ayşin Alagöl, Duygu Sultan Çelik, Vildan Yayla, Deniz Tolga
The present study was designed to test the hypothesis that high dose dexmedetomidine would increase the duration of antinociception to a thermal stimulus in a rat model of sciatic nerve blockade without causing nerve damage. The rats were anesthetized with isoflurane. After electromyography (EMG) recordings, right sciatic nerves were explored and perineural injections were delivered: Group D (n=7), 40μgμgkg(-1) dexmedetomidine administration, Group II (n=6), (0.2mL) saline administration, Group III (n=2), only surgically exploration of the right sciatic nevre...
November 2, 2016: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/27812971/efficacy-and-safety-of-dexmedetomidine-as-an-adjuvant-in-epidural-analgesia-and-anesthesia-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#6
REVIEW
Xu Zhang, Dong Wang, Min Shi, YuanGuo Luo
BACKGROUND AND OBJECTIVE: Several clinical trials have examined and indicated the usefulness of epidural dexmedetomidine therapy. However, there has been no systematic analysis of the findings of these trials to date. We undertook this systematic review and meta-analysis to investigate the efficacy and safety of epidural dexmedetomidine adjunctive therapy in different surgical procedures. MATERIALS AND METHODS: We searched EMBASE, PubMed, the Cochrane Library, and the Clinical Trials...
November 4, 2016: Clinical Drug Investigation
https://www.readbyqxmd.com/read/27792212/postoperative-analgesia-for-elective-total-knee-arthroplasty-under-subarachnoid-anesthesia-with-opioids-comparison-between-epidural-femoral-block-and-adductor-canal-block-techniques-with-and-without-perineural-adjuvants-a-prospective-randomized-clinical-trial
#7
José R Ortiz-Gómez, Marta Perepérez-Candel, José M Vázquez-Torres, José M Rodriguez-Del Río, Berta Torrón-Abad, Inocencia Fornet-Ruiz, Francisco J Palacio-Abizanda
BACKGROUND: Optimal control of acute postoperative pain and prevention of chronic persistent pain in total knee arthroplasty (TKA) remain a challenge. The main hypothesis was that nerve blocks improve postoperative analgesia especially if perineural adjuvants are added. METHODS: Immediate postoperative pain (24 h) was evaluated every hour in 639 patients using a verbal rating 11-point scale for patient self-reporting of pain (VRS-11). All patients received subarachnoid anesthesia and were randomly allocated in 8 groups: control group, epidural (EA) and single shots femoral (FNB) or adductor canal blocks (ACB), both with and without adjuvants: dexamethasone (+Dexa) or dexmedetomidine (+Dexm)...
October 28, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27792047/does-dexmedetomidine-have-a-perineural-mechanism-of-action-when-used-as-an-adjuvant-to-ropivacaine-a-paired-blinded-randomized-trial-in-healthy-volunteers
#8
Jakob H Andersen, Ulrik Grevstad, Hanna Siegel, Jørgen B Dahl, Ole Mathiesen, Pia Jæger
BACKGROUND: Dexmedetomidine used as an adjuvant to local anesthetics may prolong the duration of peripheral nerve blocks. Whether this is mediated by a perineural or systemic mechanism remains unknown. The authors hypothesized that dexmedetomidine has a peripheral mechanism of action. METHODS: The authors conducted a randomized, paired, triple-blind trial in healthy volunteers. All received bilateral saphenous nerve blocks with 20 ml ropivacaine, 0.5%, plus 1 ml dexmedetomidine, 100 µg/ml, in one thigh and 20 ml ropivacaine 0...
October 28, 2016: Anesthesiology
https://www.readbyqxmd.com/read/27790558/intrathecal-dexmedetomidine-for-anaesthetic-management-of-a-patient-with-chronic-inflammatory-demyelinating-polyneuropathy
#9
S Bala Bhaskar, D Srinivasalu
Chronic demyelinating disorders have multifactorial origin but common important physiologic and anaesthetic considerations. Choice of anaesthesia technique and the drugs used, undertanding the pros and cons of using central neuraxial blocks will help in successful management of such patients. We describe the anaesthetic management of a 34-year-old male with chronic inflammatory demyelinating polyneuropathy posted for cystolithotripsy.
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27787391/cardiac-arrest-in-a-patient-with-anterior-fascicular-block-after-administration-of-dexmedetomidine-with-spinal-anesthesia-a-case-report
#10
Baek Jin Kim, Bong Il Kim, Sung Hye Byun, Eugene Kim, Shin Yeung Sung, Jin Yong Jung
BACKGROUND: Dexmedetomidine is a sedative and analgesic agent that is administered intravenously as an adjunct to spinal anesthesia. It does not suppress the respiratory system significantly, but has adverse effects on the cardiovascular system, for example, bradycardia and hypotension. We here report a patient who underwent cardiac arrest during spinal anesthesia after intravenous infusion of dexmedetomidine. METHODS: A 57-year-old woman with no significant medical history underwent spinal anesthesia for arthroscopic meniscus resection after rupturing the right knee meniscus...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27768775/dexmedetomidine-acts-via-the-jak2-stat3-pathway-to-attenuate-isoflurane-induced-neurocognitive-deficits-in-senile-mice
#11
Yanna Si, Yuan Zhang, Liu Han, Lihai Chen, Yajie Xu, Fan Sun, Muhuo Ji, Jianjun Yang, Hongguang Bao
BACKGROUND: Previous studies showed that isoflurane-induced cognitive deficits could be alleviated by dexmedetomidine in young animal subjects. In the current study, we examine whether dexmedetomidine could also alleviate isoflurane-induced cognitive deficits in senile animals. METHODS: Senile male C57BL/6 mice (20 months) received dexmedetomidine (50 μg/kg, i.p.) or vehicle 30 minutes prior to isoflurane exposure (1.3% for 4 h). Cognitive function was assessed 19 days later using a 5-day testing regimen with Morris water maze...
2016: PloS One
https://www.readbyqxmd.com/read/27746525/dexmedetomidine-as-an-adjuvant-to-levobupivacaine-in-supraclavicular-brachial-plexus-block-a-novel-anesthetic-approach
#12
Arvinder Pal Singh, Malika Mahindra, Ruchi Gupta, Sukhminder Jit Singh Bajwa
AIMS AND OBJECTIVES: Supplementation of dexmedetomidine produces a dose-dependent sedation, anxiolysis and analgesia without respiratory depression. This study was conducted to evaluate the possible effect of dexmedetomidine as an adjuvant to levobupivacaine for supraclavicular brachial plexus block in upper limb surgery. SETTINGS AND DESIGN: Tertiary care institute, Department of Anaesthesiology and Intensive Care, a placebo-controlled study. MATERIALS AND METHODS: After obtaining Ethical Committee approval, a randomized, double-blind, placebo-controlled study was conducted on sixty American Society of Anesthesiologists physical status I and II patients in the age group of 18-60 years, divided randomly into two groups, Group I received 30 ml of 0...
September 2016: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/27738803/preventive-effects-of-dexmedetomidine-on-the-development-of-cognitive-dysfunction-following-systemic-inflammation-in-aged-rats
#13
Daiki Yamanaka, Takashi Kawano, Atsushi Nishigaki, Bun Aoyama, Hiroki Tateiwa, Marie Shigematsu-Locatelli, Fabricio M Locatelli, Masataka Yokoyama
PURPOSE: In the present study, we examined whether and by what mechanisms dexmedetomidine (DMED) prevents the development of systemic inflammation (SI)-induced cognitive dysfunction in aged rats. METHODS: Animals received a single intraperitoneal (i.p.) injection of either 5.0 mg/kg lipopolysaccharide (LPS) or vehicle. LPS-treated rats were further divided into three groups: early DMED, late DMED, or midazolam (MDZ) treatment (n = 12 each). Seven days after LPS injection, cognitive function was evaluated using a novel object recognition task, followed by measurement of hippocampal levels of proinflammatory cytokines and Toll-like receptor 4 (TLR-4) expression...
October 13, 2016: Journal of Anesthesia
https://www.readbyqxmd.com/read/27650364/comparison-of-histopathological-effects-of-perineural-administration-of-bupivacaine-and-bupivacaine-dexmedetomidine-in-rat-sciatic-nerve
#14
Elham Memari, Mohammad-Ali Hosseinian, Ali Mirkheshti, Ali Arhami-Dolatabadi, Mojtaba Mirabotalebi, Mohsen Khandaghy, Yahya Daneshbod, Leila Alizadeh, Sadegh Shirian
Injection of a variety of drugs such as local anesthetics (LAs) for peripheral nerve block has been shown to cause damage to peripheral nerves. Bupivacaine is a local anesthetic widely used in surgical procedures. The aim of this study was to evaluate the neurotoxicity of LAs including Bupivacaine and dexmedetomidine (DEX)-Bupivacaine on sciatic nerve tissue at histopathological level. In addition, we investigated whether perineural administration of DEX can attenuate Bupivacaine-induced neurotoxicity. Twenty adult Sprague Dawley rats received unilateral sciatic nerve blocks with either 0...
September 17, 2016: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/27625483/a-comparative-study-of-clonidine-and-dexmedetomidine-as-an-adjunct-to-bupivacaine-in-supraclavicular-brachial-plexus-block
#15
Archana Tripathi, Khushboo Sharma, Mukesh Somvanshi, Rajib Lochan Samal
BACKGROUND AND AIMS: Various additives are mixed with local anesthetic agents to increase the quality of block in regional anesthesia. We compared clonidine and dexmedetomidine as an adjunct to bupivacaine in supraclavicular brachial plexus block with respect to the onset and duration of sensory and motor block and duration of analgesia. MATERIAL AND METHODS: Sixty American Society of Anesthesiologists Grades I and II patients scheduled for various orthopedic surgeries of the upper limb under supraclavicular brachial plexus block were divided into two equal groups in a randomized, double-blind manner...
July 2016: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/27625482/comparison-of-block-characteristics-of-spinal-anesthesia-following-intravenous-dexmedetomidine-and-clonidine
#16
Akansha Agrawal, Sanjay Agrawal, Yashwant S Payal
BACKGROUND AND AIMS: Different routes of administration of α2 adrenergic receptor agonists have been found to prolong the duration of spinal block. MATERIAL AND METHODS: One hundred and twenty patients, aged 18-60 years, of ASA physical status I or II posted for elective fixation of fractures of lower limb under spinal anesthesia were selected. Spinal anesthesia was administered with 2.5 ml of 0.5% bupivacaine mixed with 10 μg fentanyl. The patients were randomized to receive intravenous (IV) dexmedetomidine 1 μg/kg/h for 15 min followed by infusion of 0...
July 2016: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/27616331/postoperative-analgesia-with-dexmedetomidine-in-interscalene-block-comparative-study
#17
E Velázquez-Delgado, S P Gaspar-Carrillo, A A Peña-Riveron, G E Mejía-Terrazas
INTRODUCTION: Dexmedetomidine prolongs sensory block of ropivacaine. Our objective was to study whether this extension would produce better postoperative pain control compared to that produced by clonidine in patients undergoing arthroscopic shoulder. MATERIALS AND METHODS: Study comparative, longitudinal, controlled, randomized into 3 groups. Control group I: ropivacaine 0.75% clonidine group II: 0.75% ropivacaine plus clonidine 1mg/kg group iiidexmedetomidine: 0...
September 9, 2016: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/27611039/the-effects-of-perineural-dexmedetomidine-on-the-pharmacodynamic-profile-of-femoral-nerve-block-a-dose-finding-randomised-controlled-double-blind-study
#18
M Abdulatif, M Fawzy, H Nassar, A Hasanin, M Ollaek, H Mohamed
This randomised, controlled, double-blind study investigated the effects of different doses of perineural dexmedetomidine on the pharmacodynamic profile of femoral nerve block in patients undergoing arthroscopic knee surgery. Ultrasound-guided femoral nerve block was performed before general anaesthesia using 25 ml of bupivacaine 0.5% combined with normal saline in the control group, and 25 μg, 50 μg or 75 μg of dexmedetomidine in three treatment groups (n = 15 for each group). All patients received a standard general anaesthetic and multimodal postoperative analgesic regimen...
October 2016: Anaesthesia
https://www.readbyqxmd.com/read/27610584/evaluation-of-sedatives-analgesics-and-neuromuscular-blocking-agents-in-adults-receiving-extracorporeal-membrane-oxygenation
#19
Jeremy R DeGrado, Benjamin Hohlfelder, Brianne M Ritchie, Kevin E Anger, David P Reardon, Gerald L Weinhouse
PURPOSE: The objective of this study was to evaluate the use of sedative, analgesic, and neuromuscular blocking agents (NMBAs) in patients undergoing extracorporeal membrane oxygenation (ECMO) support. MATERIALS AND METHODS: This was a 2-year, prospective, observational study of adult intensive care unit patients on ECMO support for more than 48hours. RESULTS: We analyzed 32 patients, including 15 receiving VA (venoarterial) ECMO and 17 VV (venovenous) ECMO...
August 10, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27606116/combination-of-continuous-dexmedetomidine-infusion-with-titrated-ultra-low-dose-propofol-fentanyl-for-an-awake-craniotomy
#20
Samaresh Das, Ali Al-Mashani, Neelam Suri, Neeraj Salhotra, Nilay Chatterjee
An awake craniotomy is a continuously evolving technique used for the resection of brain tumours from the eloquent cortex. We report a 29-year-old male patient who presented to the Khoula Hospital, Muscat, Oman, in 2016 with a two month history of headaches and convulsions due to a space-occupying brain lesion in close proximity with the left motor cortex. An awake craniotomy was conducted using a scalp block, continuous dexmedetomidine infusion and a titrated ultra-low-dose of propofolfentanyl. The patient remained comfortable throughout the procedure and the intraoperative neuropsychological tests, brain mapping and tumour resection were successful...
August 2016: Sultan Qaboos University Medical Journal
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