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Neuromuscular blocking drugs

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https://www.readbyqxmd.com/read/29378987/incidence-of-postoperative-residual-paralysis-in-a-nigerian-teaching-hospital
#1
A A Majekodunmi, O A Ikotun, O D Oladokun
BACKGROUND: Postoperative residual paralysis (PORP) is a known risk factor after general anesthesia (GA) for critical respiratory events and increased postoperative morbidity. PORP is defined as a train-of-four ratio (TOFR) of <0.9 using acceleromyography (AMG). TOFR <0.9 has been associated with increased risk of aspiration, obstruction of the upper airway and an impaired hypoxic ventilatory response. AIM: The aim of this study was to determine the incidence of PORP, associated factors related with its occurrence and critical respiratory events in the postanesthesia recovery room (PAR) at our institution...
December 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29362759/a-simple-microfluidic-platform-for-the-partial-treatment-of-insuspendable-tissue-samples-with-orientation-control
#2
Anthony Fan, Alireza Tofangchi, Matthew De Venecia, Taher Saif
Microfluidic devices have extensively been applied to study biological samples, including single cells. Exploiting laminar flows on a small scale, microfluidics allow for the selective and partial exposure of samples to various chemical treatments. Traditionally, suspendable samples are first flowed into formed microchannels and are allowed to adhere to the channel floor randomly with no control over sample placement or orientation, before being subjected to partial treatment. This severely limits the choice of samples and the extent of sample preparations...
January 24, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/29351759/tracheal-intubation-in-critically-ill-patients-a-comprehensive-systematic-review-of-randomized-trials
#3
Luca Cabrini, Giovanni Landoni, Martina Baiardo Radaelli, Omar Saleh, Carmine D Votta, Evgeny Fominskiy, Alessandro Putzu, Cézar Daniel Snak de Souza, Massimo Antonelli, Rinaldo Bellomo, Paolo Pelosi, Alberto Zangrillo
BACKGROUND: We performed a systematic review of randomized controlled studies evaluating any drug, technique or device aimed at improving the success rate or safety of tracheal intubation in the critically ill. METHODS: We searched PubMed, BioMed Central, Embase and the Cochrane Central Register of Clinical Trials and references of retrieved articles. Finally, pertinent reviews were also scanned to detect further studies until May 2017. The following inclusion criteria were considered: tracheal intubation in adult critically ill patients; randomized controlled trial; study performed in Intensive Care Unit, Emergency Department or ordinary ward; and work published in the last 20 years...
January 20, 2018: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29338895/feasibility-of-total-intravenous-anesthesia-by-cardiologists-with-the-support-of-anesthesiologists-during-catheter-ablation-of-atrial-fibrillation
#4
Takanori Yamaguchi, Yusuke Shimakawa, Shinji Mitsumizo, Akira Fukui, Yuki Kawano, Toyokazu Otsubo, Yuya Takahashi, Kei Hirota, Takeshi Tsuchiya, Kenichi Eshima
BACKGROUND: The optimal methodology for sedation and anesthesia during atrial fibrillation (AF) ablation has not been well established. We assessed the feasibility of total intravenous anesthesia (TIVA) by cardiologists with support from anesthesiologists during AF ablation and quality of pulmonary vein isolation (PVI) and single procedure success rate at 12 months. METHODS: TIVA was performed by cardiologists using IV propofol and fentanyl under controlled ventilation via i-gel™ without neuromuscular blocking drugs in 160 consecutive patients (80 nonparoxysmal) with no anticipated difficult airway or other severe diseases...
January 12, 2018: Journal of Cardiology
https://www.readbyqxmd.com/read/29326174/muscle-nicotinic-acetylcholine-receptors-may-mediate-trans-synaptic-signaling-at-the-mouse-neuromuscular-junction
#5
Xueyong Wang, J Michael McIntosh, Mark M Rich
Block of neurotransmitter receptors at the neuromuscular junction (NMJ) has been shown to trigger upregulation of the number of synaptic vesicles released (quantal content, QC), a response termed homeostatic synaptic plasticity. The mechanism underlying this plasticity is not known. Here, we used selective toxins to demonstrate that block of α1-containing nicotinic acetylcholine receptors (nAChRs) at the neuromuscular junction of male and female mice, triggers the upregulation of QC. Reduction of current flow through nAChRs, induced by drugs with antagonist activity, demonstrated that reduction in synaptic current per se does not trigger upregulation of QC...
January 11, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29324904/prohibitin-plays-a-critical-role-in-enterovirus-71-neuropathogenesis
#6
Issac Horng Khit Too, Isabelle Bonne, Eng Lee Tan, Justin Jang Hann Chu, Sylvie Alonso
A close relative of poliovirus, enterovirus 71 (EV71) is regarded as an important neurotropic virus of serious public health concern. EV71 causes Hand, Foot and Mouth Disease and has been associated with neurological complications in young children. Our limited understanding of the mechanisms involved in its neuropathogenesis has hampered the development of effective therapeutic options. Here, using a two-dimensional proteomics approach combined with mass spectrometry, we have identified a unique panel of host proteins that were differentially and dynamically modulated during EV71 infection of motor-neuron NSC-34 cells, which are found at the neuromuscular junctions where EV71 is believed to enter the central nervous system...
January 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29317084/-reversal-of-neuromuscular-block-with-sugammadex-in-five-heart-transplant-pediatric-recipients
#7
Ricardo Vieira Carlos, Marcelo Luis Abramides Torres, Hans Donald de Boer
Heart transplantation is a frequent procedure in the treatment of end-stage cardiac dysfunction. Therefore, these patient populations will also be more frequent exposed to other more common surgical procedures after their transplantation. Anesthesiologist should be aware in their assessment of these patients, especially regarding some specific issues related to patients with a history of heart transplantation, like reversal of neuromuscular block. Several reports described that cholinesterase inhibitors drugs, like neostigmine, may produce a dose-dependent life-threatening bradycardia in heart transplant recipients while other publication described the safe use of neostigmine...
January 6, 2018: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/29241014/an-observational-study-of-the-efficacy-of-cisatracurium-compared-to-vecuronium-in-patients-with-or-at-risk-for-ards
#8
Peter D Sottile, Tyree H Kiser, Ellen L Burnham, P Michael Ho, Richard R Allen, R William Vandivier, Marc Moss
RATIONALE: The neuromuscular blocking agent cisatracurium may improve mortality for patients with moderate-severe ARDS. Other neuromuscular blocking agents, such as vecuronium, are commonly used and have different mechanisms of action, side effects, cost, and availability in the setting of drug shortages. OBJECTIVE: To determine whether cisatracurium is associated with improved outcomes when compared vecuronium in patients at risk for and with ARDS. METHODS: Using a nationally representative database, patients admitted to the intensive care unit (ICU) with a diagnosis of ARDS or an ARDS risk factor, received mechanical ventilation, and were treated with a continuous infusion of neuromuscular blocking agent for at least two days within two days of hospital admission were included...
December 14, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29236668/-claude-bernard-and-nicotinic-receptors-from-the-neuromuscular-junction-to-tobacco-weaning
#9
Laurent Monassier
Claude Bernard (1813-1878) was fascinated by the pharmacological mechanisms of poisons. In particular, using a huge amount of ingenious and robust experiments, he demonstrated the peripheral toxic action of the natural compound curare. His work generated controversies in a period where scientific methodology and technical development followed the progression of concepts and ideas. From his intense debates with Albert Vulpian emerged the location of curare's toxicity at the neuromuscular junction. These two fascinating scientists could not imagine how important were these discoveries which allowed John Langley to propose the concept of receptor early in the 20th century...
2017: Biologie Aujourd'hui
https://www.readbyqxmd.com/read/29200077/consensus-statement-on-perioperative-use-of-neuromuscular-monitoring
#10
Mohamed Naguib, Sorin J Brull, Aaron F Kopman, Jennifer M Hunter, Béla Fülesdi, Hal R Arkes, Arthur Elstein, Michael M Todd, Ken B Johnson
A panel of clinician scientists with expertise in neuromuscular blockade (NMB) monitoring was convened with a charge to prepare a consensus statement on indications for and proper use of such monitors. The aims of this article are to: (a) provide the rationale and scientific basis for the use of quantitative NMB monitoring; (b) offer a set of recommendations for quantitative NMB monitoring standards; (c) specify educational goals; and (d) propose training recommendations to ensure proper neuromuscular monitoring and management...
November 30, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29161387/reversal-of-residual-neuromuscular-block-complications-associated-with-perioperative-management-of-muscle-relaxation
#11
J M Hunter
The use of anticholinesterases to reverse residual neuromuscular block at the end of surgery became routine practice in the 1950s. These drugs could only be used when recovery from block was established [two twitches of the train-of-four (TOF) count detectable] and concern was expressed about their cholinergic side-effects. By the 1990s, it was recognized that failure to reverse residual block adequately to a TOF ratio (TOFR) >0.7 was associated with increased risk of postoperative pulmonary complications (POPCs) following the long-acting non-depolarizing neuromuscular blocking drug (NDNMBD) pancuronium...
December 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29159065/train-of-four-stimulation-artifact-mimicking-a-seizure-during-computerized-automated-icu-eeg-monitoring
#12
Laxmi P Dhakal, William O Tatum, William D Freeman
A 54-year-old man was admitted to the intensive care unit with an aneurysmal subarachnoid hemorrhage and subsequently underwent mechanical ventilation and received neuromuscular blocking drugs to control refractory elevated intracranial pressure. During quantitative EEG monitoring, an automated alert was triggered by the train of four peripheral nerve stimulation artifacts. Real-time feedback was made possible due to remote monitoring. This case illustrates how computerized, automated artificial intelligence algorithms can be used beyond typical seizure detection in the intensive care unit for remote monitoring to benefit patient care...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/29121312/readmission-after-surgery-are-neuromuscular-blocking-drugs-a-cause
#13
M Blobner, K Ulm, J M Hunter
No abstract text is available yet for this article.
October 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29066245/effects-of-neostigmine-or-edrophonium-on-force-of-contraction-when-administered-at-a-train-of-four-ratio-of-0-9-in-anesthetized-dogs
#14
Marta Romano, Manuel Martin-Flores, Daniel M Sakai, Chia T Tseng, Luis Campoy, Robin D Gleed
OBJECTIVE: Anticholinesterase drugs may produce paradoxical neuromuscular block when administered at shallow levels of neuromuscular block. The objective of this study was to evaluate the effects of neostigmine and edrophonium when administered at near-complete reversal from nondepolarizing block in anesthetized dogs. STUDY DESIGN: Incomplete crossover, randomized, blinded experimental study. ANIMALS: A total of 12 Beagle dogs. METHODS: Each dog was anesthetized twice with propofol and maintained with isoflurane and dexmedetomidine...
August 3, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29054436/in-vitro-and-ex-vivo-screening-of-candidate-therapeutics-to-restore-neurotransmission-in-nerve-terminals-intoxicated-by-botulinum-neurotoxin-serotype-a1
#15
Phillip H Beske, Aaron B Bradford, Katie M Hoffman, Sydney Mason, Patrick M McNutt
Botulinum neurotoxins (BoNTs) are exceedingly potent neurological poisons that block cholinergic release in the peripheral nervous system and cause death by asphyxiation. While post-exposure prophylaxis can effectively eliminate toxin in the bloodstream, there are no clinically effective treatments to prevent or reverse disease once BoNT has entered the neuron. To address the need for post-symptomatic countermeasures, we designed and developed an in vitro assay based on whole-cell, patch-clamp electrophysiological monitoring of miniature excitatory post-synaptic currents in synaptically active murine embryonic stem cell-derived neurons...
October 17, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/29050397/the-antimyotonic-effect-of-lamotrigine-in-non-dystrophic-myotonias-a-double-blind-randomized-study
#16
RANDOMIZED CONTROLLED TRIAL
Grete Andersen, Gitte Hedermann, Nanna Witting, Morten Duno, Henning Andersen, John Vissing
Mexiletine is the only drug with proven effect for treatment of non-dystrophic myotonia, but mexiletine is expensive, has limited availability and several side effects. There is therefore a need to identify other pharmacological compounds that can alleviate myotonia in non-dystrophic myotonias. Like mexiletine, lamotrigine is a sodium channel blocker, but unlike mexiletine, lamotrigine is available, inexpensive, and well tolerated. We investigated the potential of using lamotrigine for treatment of myotonia in patients with non-dystrophic myotonias...
September 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29046769/factors-that-affect-the-onset-of-action-of-non-depolarizing-neuromuscular-blocking-agents
#17
REVIEW
Yong Byum Kim, Tae-Yun Sung, Hong Seuk Yang
Neuromuscular blockade plays an important role in the safe management of patient airways, surgical field improvement, and respiratory care. Rapid-sequence induction of anesthesia is indispensable to emergency surgery and obstetric anesthesia, and its purpose is to obtain a stable airway, adequate depth of anesthesia, and appropriate respiration within a short period of time without causing irritation or damage to the patient. There has been a continued search for new neuromuscular blocking drugs (NMBDs) with a rapid onset of action...
October 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29044014/-anaphylaxis-and-allergic-reactions-during-surgery-and-medical-procedures
#18
Blas J Larrauri, María Gabriela Torre, Eloísa Malbrán, María Cecilia Juri, Diego S Fernández Romero, Alejandro Malbrán
Anaphylaxis during anesthesia is an unpredictable, severe, and rare reaction. It has an incidence of 1/10 000 to 1/20 000 surgeries. In most series, the responsible drugs include neuromuscular blocking agents, latex, or antibiotics. The frequency and etiology of systemic allergic reactions in other medical procedures are largely unknown. The identification of responsible drugs of anaphylaxis is a complex task, requiring testing of all medications and substances used during surgery. We describe our experience in a retrospective study of 15 patients...
2017: Medicina
https://www.readbyqxmd.com/read/29034449/nitrous-oxide-based-vs-nitrous-oxide-free-general-anaesthesia-and-accidental-awareness-in-surgical-patients-an-abridged-cochrane-systematic-review
#19
REVIEW
J Hounsome, J Greenhalgh, O J Schofield-Robinson, S R Lewis, T M Cook, A F Smith
Accidental awareness during general anaesthesia can arise from a failure to deliver sufficient anaesthetic agent, or from a patient's resistance to an expected sufficient dose of such an agent. Awareness is 'explicit' if the patient is subsequently able to recall the event. We conducted a systematic review into the effect of nitrous oxide used as part of a general anaesthetic on the risk of accidental awareness in people over the age of five years undergoing general anaesthesia for surgery. We included 15 randomised controlled trials, 14 of which, representing a total of 3439 participants, were included in our primary analysis of the frequency of accidental awareness events...
October 16, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28964314/optimal-dose-of-rocuronium-bromide-undergoing-adenotonsillectomy-under-5-sevoflurane-with-fentanyl
#20
RANDOMIZED CONTROLLED TRIAL
Hyub Huh, Jeong Jun Park, Ji Yeong Kim, Tae Hoon Kim, Seung Zhoo Yoon, Hye Won Shin, Hye-Won Lee, Hye-Ja Lim, Jang Eun Cho
OBJECTIVE: Adenotonsillectomy is a short surgical procedure under general anaesthesia in children. An ideal muscle relaxant for adenotonsillectomy would create an intense neuromuscular block while having a quick recovery time without postoperative morbidity. We compared the effect of different doses of rocuronium for the tracheal intubation in children under 5% sevoflurane and fentanyl. MATERIALS AND METHODS: 75 children (aged 3-10 years, ASA I) scheduled for adenotonsillectomy were enrolled...
October 2017: International Journal of Pediatric Otorhinolaryngology
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