vasoconstrictor drugs may be the central and peripheral actions.The group of centrally acting drugs include stimulants of the nervous activity, "Caffeine", "Kordiamin", "corazole", "Camphor".By means of peripheral actions include Adrenomimeticalkie funds: "Adrenaline", "Norepinephrine", "Mezaton", "Ephedrine", "Naphthyzinum", "Pituitrin," Vasopressin ".Adrenomimeticheskih vasoconstrictor effect of drugs due to excitation of adrenergic vascular systems.Vasopressin and piturin act directly on the vascular smooth muscle and cause its contraction.
When vacuuming vasoconstrictor drugs contribute to high blood pressure.The mechanism of action of these drugs is associated with stimulation of alpha- and beta-adrenergic receptors, increase in the concentration of calcium ions inside cells.As a result, the tone of sympathetic nervous sy
stem decreases.The main indications for the appointment of central actions are: acute circulatory failure (collapse, shock), chronic vascular insufficiency (hypotension, decreased blood pressure in infectious diseases, and others.), Allergic reactions associated with decreased blood pressure, bronchial asthma.In these cases, use of the following drugs: "Caffeine" "Ephedrine," "Kordiamin" "Mezaton".These drugs are contraindicated in atherosclerosis, high blood pressure.
vasoconstrictor drugs from the group adrenomimeticheskih funds administered topically as anti-inflammatory agents in conjunctivitis, rhinitis and in addition to the local anesthetic to reduce the bleeding and prolong their action.Drops and sprays can be used in rhinitis is not longer than 5-6 days.Prolonged use of drugs leads to drying of the mucous membrane, as well as addictive, resulting in reduced effectiveness of the medication.Part of the drug is absorbed into the bloodstream and causes side effects.These tools are useless in adenoids, nasal septum deviation, vasomotor or allergic rhinitis and some other states.Adrenomimeticalkie vasoconstrictor drugs are contraindicated in cyclopropane, chloroform and ftorotanovom anesthesia due to increased risk of ventricular fibrillation.