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静脉输液微粒是指在静脉输液过程中,进入人体内的非代谢性的颗粒杂质,其种类繁多,大小不一。常见的有:玻璃屑、金属片、橡胶屑、细菌、霉菌、昆虫体、丝状藻、淀粉、氧化锌、各种结晶物质、纤维素等。输液中的微粒进入人体可引起一系列的病理改变,其危害程度主要取决于微粒的大小、形态、化学特征、阻塞部位、阻塞程度及人体对微粒的反应等。微粒越大、数量越多,对人造成的危害就越大。具体表现为:1.直接阻塞血管引起供血不足.使组织缺血、缺氧、甚至坏死;2.进入肺微血管,能引起巨噬细胞增殖而造成肺
Intravenous transfusion microparticles are non-metabolic particulate impurities that enter the human body during intravenous infusion and are diverse in size and size. Common are: glass crumbs, metal pieces, rubber crumbs, bacteria, molds, insects, filamentous algae, starch, zinc oxide, various crystalline substances, such as cellulose. Infusion of particles into the human body can cause a series of pathological changes, the degree of harm depends mainly on the size of the particles, morphology, chemical characteristics, blocking sites, obstruction and the body’s response to particles. The larger the particle size, the greater the number, the greater the harm done to humans. Specifically manifested as: 1. Direct obstruction of blood vessels caused by insufficient blood supply so that tissue ischemia, hypoxia, and even necrosis; 2. Into the pulmonary microvascular can cause macrophage proliferation resulting in lung