Guanethidine exerts its effects at the postganglionic
terminals of adrenergic neurons.
1988), demonstrated that brevetoxin-induced contractile effects can be blocked with atropine but not with a histamine antagonist, suggesting that toxin-induced constriction results from stimulation of parasympathetic postganglionic
8) The traction forces can result in preganglionic or postganglionic
The diastolic blood pressure goal of 90 mm Hg or less or reduction in diastolic pressure of 10 mm Hg or more was reached in 23% of all patients: 46% with calcium channel blockers, 31% diuretics, 23% centrally acting agents, 19% [beta]-blockers, 19% ARBs, 13% [alpha]-blockers, 10% ACE inhibitors, and 0% postganglionic
sympathetic neuron blockers.
The vasomotor fibers are nonmyelinated postganglionic
twigs arising from the cervical sympathetic ganglia and exerting an influence on thyroid secretory activity via their action on blood vessels.
2]-adrenergic and imidazoline receptors, suppressing the release of noradrenaline in postganglionic
sympathetic nerves and that it decreases plasma concentration of noradrenaline (Brunton et al.
In patients with Parkinson's and dementia with Lewy bodies, you don't see this, because of the loss of postganglionic
parasympathetic nerve fibers," Dr.
Thompson and Mensher (1) described the topical use of cocaine to confirm the diagnosis of Horner's syndrome and hydroxyamphetamine to distinguish between pre- and postganglionic
Frey's syndrome is generally believed to be caused by an aberration in the regrowth of the postganglionic
parasympathetic fibers that normally supply the parotid gland.
In achalasia, you have a loss of the inhibitory postganglionic
fibers, and as a result, there is a relatively increased amount of acetylcholine.
2) Hypotension is the result of cutaneous flushing and is mediated through vasodilation of vascular smooth muscle and inhibition of norepinephrine release by sympathetic postganglionic
Additional skin changes with PD include abnormal sweat response due to dysfunctional postganglionic