blockade (redirected from sympathetic blockade)

blockade /block·ade/ (blok-ād´)

1. the blocking of the effect of a hormone or neurotransmitter at a cell-surface receptor by a pharmacologic antagonist bound to the receptor.

2. in histochemistry, a chemical reaction that modifies certain chemical groups and blocks a specific staining method.

3. regional anesthesia.

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adrenergic blockade  selective inhibition of the response to sympathetic impulses transmitted by epinephrine or norepinephrine at alpha or beta receptor sites of an effector organ or postganglionic adrenergic neuron.

cholinergic blockade  selective inhibition of cholinergic nerve impulses at autonomic ganglionic synapses, postganglionic parasympathetic effectors, or the neuromuscular junction.

ganglionic blockade  inhibition by drugs of nerve impulse transmission at autonomic ganglionic synapses.

narcotic blockade  inhibition of the euphoric effects of narcotic drugs by the use of other drugs, such as methadone, in the treatment of addiction.

neuromuscular blockade  a failure in neuromuscular transmission that can be induced pharmacologically or may result from pathological disturbances at the myoneural junction.

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block·ade (bl-kd)

n.

1. Intravenous injection of large amounts of colloidal dyes in which the reaction of the reticuloendothelial cells to other influences is temporarily prevented.

2. Arrest of nerve impulse transmission at autonomic synaptic junctions, autonomic receptor sites, or myoneural junctions through the action of a drug.

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blockade

[blokād′]

an agent that interferes with or prevents a specific action in an organ or tissue, such as a cholinergic blockade that inhibits transmission of acetylcholine-stimulated nerve impulses along fibers of the autonomic nervous system.

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blockade

1. in pharmacology, the blocking of the effect of a neurotransmitter or hormone by a drug.

2. in histochemistry, a chemical reaction that modifies certain chemical groups and blocks a specific staining method.

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adrenergic blockade

see adrenergic blockade.

cholinergic blockade

see cholinergic blockade.

narcotic blockade

inhibition of the euphoric effects of narcotic drugs by the use of other drugs, such as methadone, in the treatment of addiction.

sympathetic blockade

block of nerve impulse transmission between a preganglionic sympathetic fiber and the ganglion cell.

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Patient discussion about sympathetic blockade.

Q. what does a sun block cream do? and what are a UV rays?

A. It blocks out harmful Ultra violet rays from the skin as the previous entries have related; however it can also block your ability to produce vitamin D. If you live in a northerly area or one that receives limited sunlight, its recommended to get at least 15 minutes of sun a day (this is probably best done with minimal sunblock) and according to personnal sun sensitivity. Another thing to keep in mind is that sunblock works best if applied 20 minutes before sun exposure.

Q. my son is 5 and half yrs old.he is having veezing and 75%block in one nose because of adenod.is is curable he has taken steriods for one and half yrs but with not much relief for veezing. then we switched on to ayur medicines,where he had some pigmentation at some places in his body. so again we are back to allopathy. he has one nasal steriod spray now with few other medicines. in his last test, dr, said he has adenod about 75% blcok in one nose, he has prescribed medicines for one month. he has also said that a small surgery can be done to remove adenod. i would like to know how long this surgry wil take and how much of rest he wil have to take. and if this adenod is removed, wil his other problem like veezing be cured? indira rajesh

A. it's a pretty common surgery from what i remember. most of our family has any kind of nasal problem...sinusitis..adenoids...just name it. the surgery is entering through the mouth (under full sedation) and lasering/curetting - removed. it took about a week to recover , eating soft foods..and it worked!