压疮的启事(国外英文资料).docVIP

压疮的原因(国外英文资料) 【 keywords 】 pressure sores; The cause; nursing Pressure ulcers also called bedsore, local tissue pressure for a long time, is due to the body blood circulation obstacle, tissue deficiency causes the skin loses its normal function, tissue necrosis caused by skin ulcer, is one of the three major complications nursing care, in the event of pressure ulcers, not only bring pain to the patient, increase the economic burden, increase nurses workload, and can aggravate the condition and prolong the recovery time. In severe cases, a secondary infection can cause sepsis and life-threatening [1]. The etiology of the sores There are four main factors that are commonly known to cause ulcers, namely stress, shear force, friction and humidity. The main reason is stress, which is related to duration. Landls found that the capillaries of normal skin were 2.7 kPa, and the capillaries, such as Melenna, were measured with the capillary pressure of 2.1 to 4.3 kPa. For up to 4 h under 4.67 kPa pressure or changing circumstances, also does not appear even 25.3 kPa of 1 h organizational change, but if the pressure of 9.3 kPa lasts 2 h may cause irreversible changes in cells. This suggests that you need to reduce the need for stress every once in a while. The shear force is more harmful than the vertical direction of the pressure, such as lying on the back, the head of the bed rising or the shearing force at the back of the sacral. Friction is the mechanical force for epithelial tissue, can remove the outer protective cornification skin, increase skin sensitivity of pressure ulcers, bed ruffle rough crumbs, slag or move the patient when drag, pull, pull, pull all the large friction. Humidity is another reason, and in a humid environment, the risk of a patients sores increases by five times [3]. The moist stimulation caused by incontinence and sweating causes the skin to be soaked and loose, which is vulnerable to shear forces and friction. Whole body nutrition barrier, negat