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出血原因根据近年来的认识,鼻衄的原因有以下几种: 一、凝血机能不良:据报道,183例继发性鼻衄中,血小板功能不全者占73%。血小板功能失调可以周期性出现。280例5～50岁原因不明的反复鼻衄者中,血管血小板止血功能有改变者242例,占86.5%,其中凝集不良性血小板病变(dysaggregational thrombocytopathema)占152例(54.5%)。血友病121例中,鼻衄者47例,占38.7%。二、心血管疾病:据分析,1,724例鼻衄者,出血可能由于心血管因素引起者占47.3%,原因
Causes of bleeding According to recent knowledge, the reasons for epistaxis are the following: First, clotting dysfunction: According to reports, 183 cases of secondary epistaxis, platelet dysfunction accounted for 73%. Platelet dysfunction can occur periodically. Of the 280 patients aged 5 to 50 years with unknown cause of repeated epistaxis, 242 cases (86.5%) had changes of hemostatic function of vascular platelets, of which 152 (54.5%) had dysaggregatory thrombocytopatrichema. Among the 121 cases of haemophilia, 47 cases were nasal obstruction, accounting for 38.7%. Second, cardiovascular disease: According to the analysis, 1,724 cases of epistaxis, bleeding may be caused by cardiovascular factors accounted for 47.3% of the reasons