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A depolarizing neuromuscular blocking agent is a form of neuromuscular blocker that depolarizes the motor end plate. [15] An example is succinylcholine. Depolarizing blocking agents work by depolarizing the plasma membrane of the muscle fiber, similar to acetylcholine.
Depolarizing neuromuscular blockers: Depolarizing agents act as agonists for acetylcholine receptors. Succinylcholine is currently the only depolarizing neuromuscular blocking drug that has been placed in ongoing clinical use. Its pharmacological structure resembles two acetylcholine molecules combined through acetate methyl groups. [11]
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Neuromuscular blocking drugs are also known as muscle relaxants and data suggests they are used in around half of general anaesthetics administered in the UK. NMBAs block the transmission of ...
A muscle relaxant is a drug that affects skeletal muscle function and decreases the muscle tone. It may be used to alleviate symptoms such as muscle spasms, pain, and hyperreflexia. The term "muscle relaxant" is used to refer to two major therapeutic groups: neuromuscular blockers and spasmolytics.
Anticholinergics (anticholinergic agents) are substances that block the action of the acetylcholine (ACh) neurotransmitter at synapses in the central and peripheral nervous system. [ 1 ] [ 2 ] These agents inhibit the parasympathetic nervous system by selectively blocking the binding of ACh to its receptor in nerve cells .
Pancuronium, the first aminosteroid neuromuscular blocking agent to be introduced. Aminosteroids are a group of steroids with a similar structure based on an amino - substituted steroid nucleus. [ 1 ] [ 2 ] They are neuromuscular blocking agents , acting as competitive antagonists of the nicotinic acetylcholine receptor (nAChR), and block the ...
Rocuronium bromide is a competitive antagonist for the nicotinic acetylcholine receptors at the neuromuscular junction. Of the neuromuscular-blocking drugs it is considered to be a non-depolarizing neuromuscular junction blocker, because it acts by dampening the receptor action causing muscle relaxation, instead of continual depolarisation which is the mechanism of action of the depolarizing ...
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