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Mepivacain

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https://www.readbyqxmd.com/read/28330526/different-spectrophotometric-and-chromatographic-methods-for-determination-of-mepivacaine-and-its-toxic-impurity
#1
Nada S Abdelwahab, Nehal F Fared, Mohamed Elagawany, Esraa H Abdelmomen
Stability-indicating spectrophotometric, TLC-densitometric, and ultra-performance LC (UPLC) methods were developed forthe determination of mepivacaine HCl (MEP) in the presence of its toxic impurity, 2,6-dimethylanaline (DMA). Different spectrophotometric methods were developed for the determination of MEP and DMA. In a dual-wavelength method combined with direct spectrophotometric measurement, the absorbance difference between 221.4 and 240 nm was used for MEP measurements, whereas the absorbance at 283 nm was used for measuring DMA in the binary mixture...
February 21, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28319552/evaluation-of-lung-function-and-clinical-features-of-the-ultrasound-guided-stellate-ganglion-block-with-2-different-concentrations-of-a-local-anesthetic-a-randomized-controlled-trial
#2
Won-Joong Kim, Hahck Soo Park, Myung Sub Yi, Gill-Hoi Koo, Hwa-Yong Shin
BACKGROUND: One possible complication of stellate ganglion block (SGB) is respiratory compromise. No study has yet addressed the comparison of its effect on lung function and clinical features, including Horner's syndrome, changes in temperature, sensory and motor functions, and adverse events of lower versus higher concentrations (LC and HC, respectively) of local anesthetics in an ultrasound-guided SGB. METHODS: Fifty patients were randomized into 1 of 2 groups: the LC group (5 mL of 0...
April 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28289821/single-dose-local-anesthetics-exhibit-a-type-dose-and-time-dependent-chondrotoxic-effect-on-chondrocytes-and-cartilage-a-systematic-review-of-the-current-literature
#3
REVIEW
Peter Cornelius Kreuz, Matthias Steinwachs, Peter Angele
PURPOSE: Many studies have shown that local anesthetics may impede chondrocyte metabolism. However, the influence of a single-dose local anesthetics is controversial. The aim of this metaanalysis was to review the literature for studies investigating the cytotoxic effects of single-dose local anesthetics on chondrocytes and cartilage. METHODS: A comprehensive literature search was performed using established search engines (Medline, Embase) to identify studies, investigating the influence of single-dose local anesthetics on cartilage...
March 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28277420/regional-to-the-rescue-axillary-brachial-plexus-nerve-block-facilitates-removal-of-entrapped-transradial-catheter-placed-for-cardiac-catheterization
#4
Brian M Fitzgerald, Lee A Babbel, Ferdinand K Bacomo, Sandeep T Dhanjal
OBJECTIVE: Our objective was to describe the first reported use of an axillary brachial plexus block to treat the entrapment of a transradial artery catheter due to vasospasm. CASE REPORT: A 42-year-old man undergoing transradial arterial cardiac catheterization suffered arterial vasospasm causing the catheter to become entrapped and refractory to conservative (warm compresses) and standard pharmacologic interventions (intracatheter verapamil, intravenous infusions of nitroglycerin and nicardipine, and subcutaneous lidocaine and topical nitroglycerin)...
March 8, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28271334/topical-treatments-for-localized-neuropathic-pain
#5
REVIEW
Roberto Casale, Z Symeonidou, M Bartolo
PURPOSE OF REVIEW: Topical therapeutic approaches in localized neuropathic pain (LNP) syndromes are increasingly used by both specialists and general practitioners, with a potentially promising effect on pain reduction. In this narrative review, we describe the available compounds for topical use in LNP syndromes and address their potential efficacy according to the literature. RECENT FINDINGS: Local anaesthetics (e.g., lidocaine, bupivacaine and mepivacaine), as well as general anaesthetic agents (e...
March 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28235506/effective-volumes-of-1-5-mepivacaine-with-different-sodium-concentration-for-ultrasound-guided-popliteal-block
#6
Mercedes López, Miguel Calvo, Azahara Sancho, Nicolas Brogly, Emilia Guasch, Fernando Gilsanz
STUDY OBJECTIVE: To determine if a solution of 1.5% mepivacaine diluted with 5% dextrose, which decreases the sodium concentration by 30%, results in reduced volume requirements for a complete sensory block, in the case of an ultrasound guided popliteal nerve block. DESIGN: A randomized controlled study. SETTING: Operating room. PATIENTS: We included seventy ASA 1-3 patients, undergoing unilateral "hallux valgus" repair under ultrasound guided popliteal nerve block...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28215443/2-mepivacaine-seems-to-do-better-than-2-%C3%A2-lidocaine-in-achieving-successful-anesthesia-in-posterior-teeth-with-irreversible-pulpitis
#7
Romina Brignardello-Petersen
No abstract text is available yet for this article.
February 16, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28120017/-sciatic-nerve-block-out-of-plane-distal-to-the-bifurcation-effective-and-safe
#8
RANDOMIZED CONTROLLED TRIAL
T Geiser, J Apel, O Vicent, J Büttner
BACKGROUND: Ultrasound guided distal sciatic nerve block (DSB) at bifurcation level shows fast onset and provides excellent success rates. However, its safe performance might be difficult for the unexperienced physician. Just slightly distal to the bifurcation, the tibial nerve (TN) and common fibular nerve (CFN) can be shown clearly separated from each other. Therefore, we investigated if a block done here would provide similar quality results compared to the DSB proximally to the division, with a potentially lower risk of nerve damage...
March 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28017345/axillary-brachial-plexus-block-duration-with-mepivacaine-in-patients-with-chronic-renal-failure-case-control-study
#9
V Mojica, D Nieuwveld, A E Herrera, G Mestres, A M López, X Sala-Blanch
INTRODUCTION: Regional anaesthesia is commonly preferred for arteriovenous fistula (AVF) creation. Previous studies suggest a shorter block duration in patients with chronic renal failure, maybe because of the changes in regional blood flow. The aim of our study was to evaluate the duration of the axillary block with 1.5% mepivacaine in patients with chronic renal failure scheduled for AVF compared with healthy controls. METHODS: Patients scheduled for AVF creation for the first time (GIRC) were included...
April 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28004094/chemiluminescence-determination-of-local-anaesthetic-mepivacaine-in-human-plasma-and-pharmaceuticals
#10
Ali Mokhtari
In this study, a new method has been developed for the simple determination of mepivacaine (carbocaine). The method is based on the enhancement effect of mepivacaine in the chemiluminescence (CL) reaction of tris(1,10 phenanthroline) ruthenium(II) with cerium(IV). A mechanism for the CL reaction has been proposed on the basis of UV-Vis, fluorescent and CL spectra. Under optimum conditions, the CL intensity was proportional to the concentration of the drug in solution over the range 0.45-226.25 μg mL-1 (R2 = 0...
December 2016: Acta Chimica Slovenica
https://www.readbyqxmd.com/read/27976931/a-novel-lc-ms-ms-method-for-mepivacaine-determination-and-pharmacokinetic-study-in-a-single-dose-two-period-crossover-in-healthy-subjects
#11
Ruo-Wang Duan, Jiong Song, Yu-Ping Li, Chun-Gen Xing
The objective of this work was to develop a simple, selective, and sensitive LC-MS/MS method for the quantitation of the mepivacaine in Chinese biological matrix. The calibration curve of mepivacaine ranged from 0.5 to 2000 ng/mL with the lower limit of quantitation being 0.5 ng/mL. This sensitivity was high enough to describe the profile of blood mepivacaine level versus time. Thereby it was very desirable for the pharmacokinetic study because of its high sensitivity and accuracy. The study used a single-dose two-period crossover design principle...
December 15, 2016: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/27938934/medial-approach-of-ultrasound-guided-costoclavicular-plexus-block-and-its-effects-on-regional-perfussion
#12
D Nieuwveld, V Mojica, A E Herrera, J Pomés, A Prats, X Sala-Blanch
INTRODUCTION: Ultrasound-guided infraclavicular block in the costoclavicular space located between the clavicle and the first rib, reaches the secondary trunks when they are clustered together and lateral to the axillary artery. This block is most often performed through a lateral approach, the difficulty being finding the coracoid process an obstacle and guiding the needle towards the vessels and pleura. A medial approach, meaning from inside to outside, will avoid these structures. Traditionally the assessment of a successful block is through motor or sensitive responses but a sympathetic fibre block can also be evaluated measuring the changes in humeral artery blood flow, skin temperature and/or perfusion index...
April 2017: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/27938712/the-stability-and-microbial-contamination-of-bupivacaine-lidocaine-and-mepivacaine-used-for-lameness-diagnostics-in-horses
#13
D M T Adler, C Cornett, P Damborg, D R Verwilghen
Local anaesthetics (LAs) are frequently used for diagnostic procedures in equine veterinary practice. The objective of this study was to investigate the physico-chemical stability and bacterial contamination of bupivacaine, lidocaine and mepivacaine used for lameness examinations in horses. The LAs were stored in 12 different groups at different temperatures (-18 °C to 70 °C), light intensities and in common veterinary field conditions for up to 16 months. The pH, presence of bacterial contamination and concentrations of LAs and methylparaben (a preservative present in lidocaine) were determined serially in both new and repeatedly punctured (RP) vials...
December 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27878813/no-cases-of-perioperative-allergy-to-local-anaesthetics-in-the-danish-anaesthesia-allergy-centre
#14
A D Kvisselgaard, M Krøigaard, H F Mosbech, L H Garvey
BACKGROUND: Local anaesthetics (LA) are often suspected as possible causes of allergic reactions. The Danish Anaesthesia Allergy Centre (DAAC) is the national reference centre for investigation of perioperative allergic reactions. The purpose of this study was to investigate the incidence of IgE-mediated immediate type perioperative allergic reactions to LA. METHODS: In the period 2004-2013, a total of 409 patients (244 women/165 men; median age 49 years, range 1-86 years) were investigated in DAAC on suspicion of allergy associated with anaesthesia and surgery...
February 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/27871553/fascia-iliaca-block-associated-only-with-deep-sedation-in-high-risk-patients-taking-p2y12-receptor-inhibitors-for-intramedullary-femoral-fixation-in-intertrochanteric-hip-fracture-a-series-of-3-cases
#15
Carlos Rodrigues Almeida, Emília Milheiro Francisco, Vítor Pinho-Oliveira, José Pedro Assunção
OBJECTIVE: We present a series of 3 cases in which the impact in outcome was, first of all, related to the capacity to offer early and safer treatment to some hip fracture high-risk patients using a fascia iliaca block (FIB; ropivacaine 0,5% 20 cc and mepivacaine 1,3% 15 cc, given 30 minutes before incision) associated only with deep sedation, contributing to better practice and outcome. CASE REPORTS: All elderly patients were American Society of Anesthesiologists IV patients, under P2Y12 receptor inhibitors, suffering from an intertrochanteric fracture, and purposed for intramedullary femoral fixation (IMF)...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27834474/minimum-local-anesthetic-volumes-for-a-selective-saphenous-nerve-block-a-dose-finding-study
#16
Werner Ten Hoope, Markus W Hollmann, Arthur Atchabahian, Marcel Rigaud, Gino M Kerkhoffs, Philipp Lirk, Holger M Baumann
BACKGROUND: Saphenous nerve block contributes to analgesia after knee and lower leg surgery. However, literature reports a wide range of volumes of local anesthetic being used for this block. METHODS: A non-randomized controlled trial in a single university hospital in March 2015. Eighteen healthy volunteers (ASA 1 status, aged 27-43 years; male-to-female ratio 11/7) were needed to determine the minimum local anesthetic volume (MLAV) of mepivacaine 2% using the Dixon up-and-down method to achieve a selective ultrasound-guided saphenous nerve block...
February 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27810215/development-of-a-peripheral-nerve-stimulator-guided-technique-for-equine-pudendal-nerve-blockade
#17
K Gallacher, L C Santos, L Campoy, A J Bezuidenhout, R O Gilbert
The aim of this study was to develop and evaluate a procedure for equine pudendal nerve block using a peripheral nerve locator. In the first experiment, six ponies were used to determine the relationship between elicited muscle contractions (anal, perineal or both) and nerves serving the perineal region (pudendal, caudorectal and perineal nerves) when methylene blue dye was injected using the electrolocation technique. This experiment showed that the pudendal nerve was approached effectively when both anal and perineal twitch were elicited during electrolocation...
November 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27805885/effects-of-two-different-anesthetic-solutions-on-injection-pain-efficacy-and-duration-of-soft-tissue-anesthesia-with-inferior-alveolar-nerve-block-for-primary-molars
#18
RANDOMIZED CONTROLLED TRIAL
Ülkü Şermet Elbay, Mesut Elbay, Emine Kaya, Sinem Yıldırım
OBJECTIVES: The purpose of the study was to compare the efficacy, injection pain, duration of soft tissue anesthesia, and postoperative complications of two different anesthetics (2% lidocaine with 1:80,000 epinephrine and 3% plain mepivacaine) in pediatric patients in inferior alveolar nerve block (IANB) administered by a computer-controlled delivery system (CCDS). STUDY DESIGN: The study was conducted as a randomized, controlled-crossover, double-blind clinical trial with 60 children requiring bilateral pulpotomy or extraction of primary mandibular molars...
2016: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/27776485/the-antioxidant-n-acetyl-cysteine-suppresses-lidocaine-induced-intracellular-reactive-oxygen-species-production-and-cell-death-in-neuronal-sh-sy5y-cells
#19
Akihisa Okamoto, Masahiro Tanaka, Chisato Sumi, Kanako Oku, Munenori Kusunoki, Kenichiro Nishi, Yoshiyuki Matsuo, Keizo Takenaga, Koh Shingu, Kiichi Hirota
BACKGROUND: The local anesthetic lidocaine can affect intra- and extra-cellular signaling pathways in both neuronal and non-neuronal cells, resulting in long-term modulation of biological functions, including cell growth and death. Indeed, lidocaine was shown to induce necrosis and apoptosis in vitro. While several studies have suggested that lidocaine-induced apoptosis is mitochondrial pathway-dependent, it remains unclear whether reactive oxygen species (ROS) are involved in this process and whether the observed cell death can be prevented by antioxidant treatment...
October 24, 2016: BMC Anesthesiology
https://www.readbyqxmd.com/read/27773221/3d-ultrasound-estimation-of-the-effective-volume-for-popliteal-block-at-the-level-of-division
#20
X Sala-Blanch, J Franco, R Bergé, R Marín, A M López, M Agustí
Local anaesthetic injection between the tibial and commmon peroneal nerves within connective tissue sheath results in a predictable diffusion and allows for a reduction in the volume needed to achieve a consistent sciatic popliteal block. Using 3D ultrasound volumetric acquisition, we quantified the visible volume in contact with the nerve along a 5cm segment. METHODS: We included 20 consecutive patients scheduled for bunion surgery. Ultrasound guided popliteal block was performed using a posterior, out of plane approach at the level of división of the sciatic nerve...
October 20, 2016: Revista Española de Anestesiología y Reanimación
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