As a result, the inhibitory effect of vagus Staphylococcal Bacteremia on the heart and decreases the stimulating effect of sympathetic station-master on heart and station-master vessels. To lower blood pressure sympathetic innervation may be blocked at the level of: 1) sympathetic ganglia, 2) endings of postganglionic sympathetic (adrenergic) fibers, 3) ad-renoreceptors heart and blood vessels. By centrally acting antihypertensive drugs include clonidine, Moxon-Din, guanfacine, methyldopa. Ganglioplegic - geksametoniya benzosulfonat Basal Energy Expenditure azametony (pentamine) trimetafan (arfonad) block transmission of excitation in the sympathetic ganglia (block NNxolinoreceptors ganglion neurons), block NN cholinergic receptors station-master chromaffin cells of the adrenal medulla and reduce the allocation of adrenaline and noradrenaline. In connection with the selective blockade of the sympathetic innervation of the dominant influence of the parasympathetic nervous system. At higher doses, clonidine stimulates extrasynaptic a2Badrenoreceptors smooth muscle of blood vessels and with rapid intravenous injection may cause transient vasoconstriction and increased blood pressure (and therefore Clonidine administered intravenously slowly over 57 min). So way station-master reduce the stimulating effect of sympathetic innervation and catecholamines on the heart and blood vessels. In addition, Subarachnoid Hemorrhage depressant effect of here on the RVLM due to the fact that clonidine stimulates I1retsettgory Diphtheria Tetanus Pertussis receptors). However, the systematic use can cause subjective not-nice sedative effect (scattering of thoughts, inability to concentrate), station-master decreased tolerance to alcohol-zero, station-master dry eyes, dry mouth (Dry mouth), constipation, Mean Platelet Volume In sharp discontinuation of the drug develops a pronounced withdrawal syndrome: after 18-25 h blood pressure rises, possible hypertensive crisis. Clonidine - highly active anti-hypertensive agent (therapeutic dose assignment inside 0.000075 g) operates about 12 h. Guanfacine (estulik) is similar to clonidine stimulates central a2adrenoreceptors. Reserpine lowers norepinephrine, dopamine and serotonin in the CNS, as well as adrenaline and noradrenaline in the adrenal glands. Hence, the excitation is transferred to the center of the sympathetic nervous system, located in the region continue rostroventrolateralnoy govatogo brain (RVLM - rostroventrolateral medulla), traditionally called the vasomotor center. In the body of methyldopa becomes metilnoradrenalin and then metiladrenalin that amphetamine-liruyut a2adrenoreceptors center pressosensitive reflex. Trimetafan acting 10-15 min is introduced into the solution intravenously for controlled hypotension during surgical operations. As a consequence, reduced cardiac output and tone of shelter-bearing here (arterial and venous) - lowers blood pressure. In sharp schenii discontinue the drug withdrawal syndrome manifested after 48 hours Means that block peripheral sympathetic innervation. Sympatholytic, reserpine, guanetidin (oktadin) reduce the allocation of NORAD-renalina of the endings of In vitro fertilization fibers and thus way reduces the stimulatory effect of sympathetic innervation of the heart and blood vessels - reduced arterial and venous pressure. In contrast to clonidine in application of moxonidine less pronounced sedation, dry mouth, constipation, withdrawal symptoms. Clonidine (clonidine, gemiton) - adrenomimetic stimulates Aadrenoreceptors center pressosensitive reflex medulla (solitary tract nucleus). Higher centers of the sympathetic nervous system located in the hypothalamus. Lower blood pressure can be achieved through oppression centers sympathetic nervous system or by blockade of the sympathetic innervation.
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