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第七季以百年一度的大流行病导致世界各地的医疗崩溃为舞台，新局面迎来是日本最高峰的教学医院—东帝大学医院，把感染治疗和内科作为重中之重，并计划推迟不必要的紧急手术。曾经知名的外科被移往分院的大楼，内科医生推广不使用手术刀的化学手术，显示出兴起的迹象。被感染危机和东帝大新权力席卷的未知子，在如同战场般疲惫的医疗现场也毫不退缩地走上了自己的道路。老话说的好，甭管黑猫白猫，逮着老鼠的就是好猫。吃过饭后，张大栓父子被人喊走了，说是晚上要在外边喝酒看戏。　　年轻检察官高飞负责此案的起诉，一切的证据十分确凿；有记录案发生过程的现场录像、并且亲手抓获犯的刑警队长张小龙和死者的司机程克伟是案发的目击证人……铁证如山，凶手已难逃法网。Thromboembolic diseases are currently one of the causes that endanger human health and lead to the highest mortality rate, such as myocardial infarction, cerebral thrombosis, deep vein thrombosis, cerebral embolism, pulmonary embolism, etc. In addition, thrombosis is an important pathological process involved in the pathogenesis of many diseases. 1. Anticoagulant therapy (1) Heparin: Heparin is a commonly used anticoagulant and is a highly sulfated glucosaminoglycan. Heparin is widely found in mammalian tissues, and mast cells are the main producing sites. The main sources of medicinal heparin are bovine lung and pig intestinal mucosa. Heparin used clinically is called unfraction heparin (UFH) because it is a mixture of components with different relative molecular weights. The relative molecular weight is between 33,000 and 30,000, which is also called standard heparin (SH). The drug name is heparin sodium. (2) Low molecular weight heparin: crude heparin is cracked into some fraction with relative molecular mass of 1000 ~ 12000 by chemical or enzymatic hydrolysis methods, and then purified. There are at least 10 kinds of low molecular weight heparin prepared by different manufacturers and different methods.