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血小板减少症即血小板检查其计数低于10万/立方毫米,临床表现为自发性皮肤瘀点和瘀斑,粘膜出血、鼻衄和牙龈出血,口腔粘膜及舌出现紫血泡。严重者血小板计数可不足2万/立方毫米。急性重症患者可有胃肠道、泌尿道甚至颅内出血。慢性患者多以某一部位的反复出血为特征,往往导致贫血。药物、恶性肿瘤骨髓浸润、感染、尿毒症、电离辐射等是导致血小板减少最常见
Thrombocytopenia that platelet count less than 100,000 / cubic millimeter, the clinical manifestations of spontaneous skin petechia and ecchymosis, mucosal bleeding, epistaxis and gingival bleeding, oral mucosa and tongue purple blood bubble. In severe cases, platelet count can be less than 20,000 / cubic millimeter. Acute critically ill patients may have gastrointestinal tract, urinary tract or even intracranial hemorrhage. Chronic patients with more than one part of the repeated bleeding is characterized, often leading to anemia. Drugs, bone marrow infiltration of malignant tumors, infections, uremia, ionizing radiation, etc. are the most common causes of thrombocytopenia