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α溶血性liviridans链球菌βarins链球菌及enterocicii链球菌是感染性心内膜炎常见的病原菌,而β溶血性链球菌过去报告少,但是现已认识到β溶血性链球菌可导致心内膜炎。按细胞壁的抗原,可分为A、B、C、D组。D组链球菌可能为α、β溶血性链球菌或非溶血性链球菌。许多微生物实验室已可常规地把β溶血性链球菌从血培养中分离出来。因此,可报告由A、B、C、D组链球菌引起的败血症及心内膜炎。 A组链球菌中只有一属pyogenes链球菌,是导致咽炎,蜂窝织炎和脓皮病的主要病因,虽然它还可以引起其它的感染,包括休克型败血症,但是由它引起的心内膜炎是相当少见的。仅有36例公开报告由其导致的心内膜炎的病例,包括因静注麻醉药物
α-hemolytic liviridans streptococci βarins streptococcus and enterocicus streptococci are common pathogens of infective endocarditis, while β-hemolytic streptococcal past report less, but it has now been recognized that β-hemolytic streptococcus can cause endocarditis . By cell wall antigen, can be divided into A, B, C, D group. Group D Streptococcus may be alpha, beta hemolytic streptococcus or non-hemolytic streptococcus. Many microbiological laboratories have routinely isolated beta hemolytic streptococci from blood cultures. Therefore, sepsis and endocarditis caused by streptococci A, B, C and D can be reported. Only one genus of pyogenes streptococci in group A is the major cause of pharyngitis, cellulitis and pyoderma, although it can cause other infections, including shock septicemia, but it causes endocarditis Is quite rare. Only 36 cases of publicly reported endocarditis have been reported, including those due to intravenous anesthesia