Neuromuscular Blocking Agents
Neuromuscular Blocking Agents - Related Videos
10:40
Measuring Neuromuscular Junction Functionality
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Cited by 7 •
2017
A functional assessment of the neuromuscular junction (NMJ) can provide essential information on the communication between muscle and nerve. Here we describe a protocol to comprehensively evaluate both the NMJ and muscle functionality using two different muscle-nerve preparations, i.e. soleus-sciatic and diaphragm-phrenic.
08:50
Deep Neuromuscular Blockade Leads to a Larger Intraabdominal Volume During Laparoscopy
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Cited by 49 •
2013
This article presents a method for measuring the working abdominal volume during laproscopic myomectomy using the surgical grasper, and applies this technique to obtain pilot data on whether deep neuromuscular blockade (NMB) can enable the use of lower insufflation pressure. Reduced insufflation pressure during laproscopic surgery has been shown to reduce post-operative pain, and thus the use of NMB during surgery may enable improved patient outcomes.
11:27
Preparation and In Vitro Characterization of Dendrimer-based Contrast Agents for Magnetic Resonance Imaging
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Cited by 5 •
2016
This protocol describes the preparation and characterization of a dendrimeric magnetic resonance imaging (MRI) contrast agent that carries cyclen-based macrocyclic chelates coordinating paramagnetic gadolinium ions. In a series of MRI experiments in vitro, this agent produced an amplified MRI signal when compared to the commercially available monomeric analogue.
02:08
Assessing Muscle Contraction with Neuromuscular Blocker Treatment
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2025
This video demonstrates assessing the muscle using cultured motor neurons, Schwann cells, and myotubes, followed by treatment with a neuromuscular blocker to inhibit contraction. Color-coded time-motion graphics show a color-coded time-motion graphic. Red indicates the fastest movement, and blue indicates the slowest.
10:19
Reducing Agents
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2023
Source: Vy M. Dong and Daniel Kim, Department of Chemistry, University of California, Irvine, CA Controlling the reactivity and selectivity during the synthesis of a molecule is very important criteria for chemists. This has led to the development of many reagents that allow chemists to pick and choose reagents suitable for a given task. Quite often, a balance between reactivity and selectivity needs to be achieved. This experiment will use IR spectroscopy to monitor the reaction and to...
FAQs
The two classes prevent effective muscle activation through different receptor-level processes. Nondepolarizing agents compete with acetylcholine at nicotinic receptors, whereas depolarizing agents stimulate those receptors and sustain membrane depolarization. This distinction is central to pharmacology because both mechanisms interrupt contraction, but they alter neuromuscular signaling in fundamentally different ways.
These drugs act on communication between motor nerves and skeletal muscle rather than providing anesthesia or analgesia. Consequently, muscle movement can be suppressed while awareness and pain perception remain inadequately addressed. Appropriate anesthesia is therefore required whenever paralysis is produced, ensuring that the pharmacological effect is not mistaken for unconsciousness or comfort.
Neuromuscular monitoring helps clinicians assess the extent of pharmacologically produced muscle weakness and the return of neuromuscular function. This is especially important because the drugs can impair the muscle activity needed for breathing. Monitoring, combined with respiratory support, helps align paralysis with the intended clinical purpose and supports safer management.
Respiratory muscle activity can be compromised because these agents interfere with skeletal muscle contraction, including the movement required for effective breathing. For that reason, their use requires respiratory support and controlled ventilation when indicated. This requirement makes airway management and continuous attention to neuromuscular function essential parts of clinical pharmacology practice.
In clinical practice, the drugs are used to produce controlled muscle relaxation that facilitates endotracheal intubation and supports controlled ventilation. Their use occurs alongside appropriate anesthesia, respiratory support, and monitoring of neuromuscular function. The intended outcome is improved procedural control, not sedation or pain management, so these responsibilities must be addressed separately.
Neuromuscular blocking agents may be selected when temporary skeletal muscle relaxation is needed during surgery. By reducing muscle contraction, they can create conditions that support operative procedures, while anesthesia addresses unconsciousness and pain. Pharmacological management must also account for respiratory support and monitoring, because the same muscle-relaxing effect can affect breathing.