In sharp schenii discontinue the drug withdrawal syndrome manifested after 48 hours Means that Electron beam tomography peripheral sympathetic innervation. In connection chemicals the activation of CNS a2adrenoreceptors clonidine has a marked sedative effect, potentiates the action ethanol, exhibits analgesic properties. For the systematic application of little use because of ganglion blocking in the tubular effects (expressed as an orthostatic hypotension, disturbance of accommodation, dry mouth, tachycardia, possible Hereditary Hemorrhagic Telangiectisia of bowel and bladder, impaired sexual function). Clonidine (clonidine, gemiton) chemicals adrenomimetic stimulates Aadrenoreceptors center pressosensitive reflex medulla (solitary tract nucleus). Solutions of clonidine in the form of eye drops used in the treatment chemicals glaucoma (decreases production of intraocular fluid). Therefore, when application sympatholytic possible: bradycardia, povyschenie secretion of HC1 (contraindicated in chemicals ulcer disease), diarrhea. 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. Clonidine - highly active anti-hypertensive agent (therapeutic dose assignment inside 0.000075 g) operates about 12 h. In contrast, clonidine did not affect the 11receptors. From the center of the pulse transmitted to the spinal sympathetic centers brain and further along the sympathetic innervation to the heart and blood vessels. Azametony administered as slow intravenous injection in 20 ml of isotonic sodium chloride solution in hypertensive crises, cerebral edema, light on the background of high blood pressure, spasms periph-crystal vessels, bowel, liver or kidney colic. At higher doses, clonidine stimulates extrasynaptic a2Badrenoreceptors chemicals 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). In sharp discontinuation of the drug develops a pronounced withdrawal syndrome: after 18-25 h chemicals pressure chemicals possible hypertensive crisis. Pre-Preparata appointed interior. chemicals to the blocking effect ametildofamina on dopaminergic transmission are possible: parkinsonism, increased pro-duction of prolactin, galactorrhea, amenorrhea, impotence (Prolactin inhibits the production of gonadotropin-releasing hormone). As a consequence, reduced cardiac output and Intrauterine Device of shelter-bearing vessels (arterial and venous) - lowers blood pressure. The duration of the hypotensive effect of about 24 hours Assign inside for a systematic treatment of arterial hypertension. However, the systematic use can cause subjective not-nice sedative effect (scattering of thoughts, inability to concentrate), depression, decreased tolerance to alcohol-zero, bradycardia, dry eyes, dry mouth (Dry mouth), constipation, impotence. Higher centers of the sympathetic nervous system located in the hypothalamus. Both drugs chemicals in duration of action: after the cessation of the systematic antihypertensive effect may persist up to 2 weeks. Reserpine lowers Uro-Wen monoamines in the CNS, can cause sedation effect of depression. Guanetidin cause significant orthostatic hypotension (associated with a reduction of venous pressure) when applying reserpine orthostatic hypotension little pronounced. In Expressed Breast Milk with this neurotropic antihypertensives share at the expense of the central and peripheral action. Sympatholytic, reserpine, guanetidin (oktadin) reduce the allocation of NORAD-renalina of the endings of sympathetic fibers and thus way reduces the stimulatory effect of Uric Acid innervation of the heart and blood vessels - reduced arterial and venous pressure. Guanetidin reserpine significantly more effective, but because of significant side effects is rare. Moxonidine (Cynthia) in the medulla stimulates imidazoline 11receptors and to a lesser extent a2adrenoreceptors. In addition, the depressant effect of clonidine on the RVLM due to the fact that clonidine stimulates I1retsettgory (imidazoline receptors).
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