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27 Cards in this Set
- Front
- Back
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Skin is comprised of
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epidermis, dermis hypodermis or fascia
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Epidermis
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comprised of squamous cells, first line of defense
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dermis
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thicker layer, comprised of blood vessels, hair follicles, sweat glands, sebaceous glands, small muscles and nerves
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hypodermis or fascia
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provides covering for blood vessels
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sensory receptors
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mechanoreceptors (palpation of vein), thermoreceptors, nociceptors, chemoreceptors, mechanoreceptors (tactile sensation)
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Application of heat or cold/temp
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thermoreceptors
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pain, puncture of vein/pain
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nociceptors
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decreased circulating blood volume/osmotic change takes place
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chemoreceptors
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tactile sensation
palpation of vein |
mechanoreceptors
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approx __% of total blood volume contained in veins
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75
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Made of endothelial leaflets, prevent distal reflux of blood
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valves
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three layers
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tunica intima, tunica adventitia, tunica media
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outermost layer
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tunica adventitia
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blood supply, vasa vasorm, nourishes both adventitia and media layers
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tunica adventitia
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feel "pop" when IV started
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tunica adventitia
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middle layer
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tunica media
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composed of muscle and elastic tissue with nerve fibers for vasoconstriction/vasodilation
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tunica media
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stimulation by change in temp or mechanical or chemical irritation will produce a response
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tunica media
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innermost layer
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innermost layer
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one thin layer of cells
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endothelial lining
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roughening of this layer will lead to thrombosis formation and discomfort
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tunica intima
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factors in vein selection
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ease of insertion, type of needle/cath, coomfort and safety of patient
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Phillips 15 step method
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checking order
hand hygeine equipment prep pt assessment and psycho prep site selection and vein dilation needle selection gloving site prep vein entry catheter stabilization and dressing mgmt labeling equipment disposal patient education rate calcs monitoring and documentation |
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IV dressing is changed every ? hours?
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48
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TMS dressing changed every ___to____ with site rotation. No ointment used
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48-72
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flush before blood admin
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2ml
flush after blood admin |
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10 ml
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post blood admin
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