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Ultraviolet radiation (UV) light has a shorter wavelength and higher energy photons - mainly induces changes in the surface layers of the skin - UV wavelength range from 180 nm to 400 nm are divided into three zones: 1 long-wave band - UV-A with a wavelength of 400 - 315nm 2 medium wave band - UV-B with a wavelength of 315 - 280nm 3 shortwave band - UV-C wavelength 280 - 180nm most significant biological effects of UV-B radiation has: a) erythema - occurs within 1-3 hours after irradiation, reaching a maximum after 24 hours - losing about one to two days - manifested only the irradiated spot is sharply bounded, it is an inflammatory reaction of the skin and subcutaneous tissue b) pigmentation - may be indirectly, if formed, after erythema or straight - if reflected immediately without erythema c) formation of vitamin D in the skin is to turn the sterol precursors after irradiation of the skin to wavelengths of 300 nm (antirachitický effect). d) an increase in muscle force is subject to increased formation of glycogen and lactic acid e) enhancing the immunity of the organism f) the healing of wounds, burns, purulent skin diseases (bactericidal effect) g) may have a carcinogenic effect - UV-C radiation is dangerous for human beings (keratitis , conjunctiva), this component does not impinge on the Earth's surface taken up by the ozone layer - UV-B radiation causes erythema short, is the most significant therapeutic effects - UV radiation - under the influence of this component of the skin browns and by prolonged exposure ages, is a proven carcinogenic rohrlux action of the natural UV radiation source is the sun. Artificial sources of UV radiation: Ortuťová HID lamp, a low-pressure rohrlux mercury lamp, kromayerova lamp, fluorescent lamps which are used in the solarium. In determining the radiation dose used unit threshold erythema dose, which indicates the time of exposure necessary to produce erythema. Overall, the UV radiation is applied at a distance of 1 m from the source 2-3 times per week, a total of 10 times, each time after resolution of erythema of the previous application. UV locally applied at a distance of 0.5 m from the source. Workflow: - patient assumes the position required by the application procedures - explain to the patient the need to protect your eyes with special glasses - parts of the body that are not exposed to radiation rohrlux protect cotton sheet - the total procedure stands, sits, lies at a distance of 1 m from the source - applied locally to the distance 0.5 m - for topical application, which is intended to cause severe erythema with depth and reflective effect use remote rack method. radiation is administered to one or more local areas (fields) of a surface 50 cm at a distance of 50cm, the rest of the body protect cotton bed sheet, radiation is applied to the area of the neck, back between the shoulder blades, rohrlux lombálnu area on the course of the sciatic nerve, shoulders, forearms and calves. Erythema - redness of the skin at the point of radiation resulting vascular reactions, vasodilatation, increased blood flow, vascular permeability - it is an inflammation of the skin has 4 stages: 1st stage - occurs after irradiation, which had low intensity and short duration, there is no redness. 2nd stage - erythema symptoms of pain, redness is moderate and disappears after one day. 3rd stage - redness is strong, clear, visible pigmentation. 4th step - redness is significant, it is associated with swelling and pain, lasts long, pigmentation is strong. Indications: - rickets, osteomalacia, osteoporosis, wound healing, decubitus ulcer, ulcers, skin diseases, rohrlux psoriasis, eczema, non-pulmonary tuberculosis, lumbago, artalgie, neuralgia (pain, neuralgia) Contraindications: acute skin-diseases, acute infectious diseases, fever, photodermatosis , hyperthyroidism, cancer, duodenal and gastric ulcer, cytostatic therapy and radiotherapy,
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