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The effect of non-depolarizing neuromuscular-blocking drugs may be reversed with acetylcholinesterase inhibitors, neostigmine, and edrophonium, as commonly used examples. Of these, edrophonium has a faster onset of action than neostigmine, but it is unreliable when used to antagonize deep neuromuscular block. [ 29 ]
Consequently, depolarizing and muscle-contracting effects are decreased. Non-depolarizing neuromuscular blockers are generally reversible, and hence have no permanent effects on acetylcholine receptors. [1] [4] Unlike depolarizing neuromuscular blockers, non-depolarizing drugs do not produce conformational changes to the receptor. [1]
Gallamine is a non-depolarising type of blocker as it binds to the acetylcholine receptor but does not have the biological activity of acetyl choline. Gallamine triethiodide has a parasympatholytic effect on the cardiac vagus nerve , which causes tachycardia [ 3 ] [ 4 ] and occasionally hypertension .
Pancuronium is a typical non-depolarizing curare-mimetic muscle relaxant. It competitively inhibits the nicotinic acetylcholine receptor at the neuromuscular junction by blocking the binding of acetylcholine. It has slight vagolytic activity, causing an increase in heart rate, but no ganglioplegic (i.e., blocking ganglions) activity.
Because ganglionic blockers block both the parasympathetic nervous system and sympathetic nervous system, the effect of these drugs depends upon the dominant tone in the organ system. [2] The opposite of a ganglionic blocker is referred to as a ganglionic stimulant. Some substances can exhibit both stimulating and blocking effects on autonomic ...
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 ...
Mivacurium chloride (formerly recognized as BW1090U81, BW B1090U or BW1090U) is a short-duration non-depolarizing neuromuscular-blocking drug [1] or skeletal muscle relaxant in the category of non-depolarizing neuromuscular-blocking drugs, [2] used adjunctively in anesthesia to facilitate endotracheal intubation [3] and to provide skeletal muscle relaxation during surgery or mechanical ...
Vecuronium is in the aminosteroid neuromuscular-blocker family of medications and is of the non-depolarizing type. [2] It works by competitively blocking the action of acetylcholine on skeletal muscles. [2] The effects may be reversed with sugammadex or a combination of neostigmine and glycopyrrolate. To minimize residual blockade, reversal ...