Terata Kojiro, Saito Shunsuke, Niitsuma Ken, Ohkusu Misako, Takeuchi Noriko, Ishiwada Naruhiko, Matsuoka Taiki, Hirota Shotaro, Yokoyama Shohei, Kanno Yasuyuki, Kanazawa Yuta, Tezuka Masahiro, Takei Yusuke, Tsuchiya Go, Konishi Taisuke, Shibasaki Ikuko, Ogata Koji, Fukuda Hirotsugu
Department of Cardiac and Vascular Surgery, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi, 321-0293, Japan.
Department of Infectious Diseases, Medical Mycology Research Center, Chiba University, Chiba, Japan.
Gen Thorac Cardiovasc Surg Cases. 2023 Jul 27;2(1):36. doi: 10.1186/s44215-023-00057-y.
Infective endocarditis resulting from community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) is a rare, but often fatal heart disorder. Here, we report a case of multidisciplinary treatment for infective endocarditis with systemic multiple abscesses due to Panton-Valentine leukocidin (PVL) producing CA-MRSA and Candida albicans .
The patient suffered from infective endocarditis, destructive thyroiditis, hemorrhagic cerebral infarction due to mycotic embolism, lung abscess, multiple skeletal muscle abscess, and disseminate intravascular coagulopathy. Aggressive medical treatment as well as mechanical circulatory support was required before the curative surgical treatment. Blood cultures were positive for MRSA and Candida albicans. Genomic analysis of MRSA revealed Staphylococcal Cassette Chromosome mec IVc and also the virulence gene encoding PVL.
CA-MRSA strains have higher pathogenicity and are more destructive to tissue than healthcare-associated MRSA strains because of the toxins they produce, including PVL. Multidisciplinary treatment including aggressive surgery was required to rescue the patient.
社区获得性耐甲氧西林金黄色葡萄球菌(CA-MRSA)引起的感染性心内膜炎是一种罕见但往往致命的心脏疾病。在此,我们报告一例因产生杀白细胞素(PVL)的CA-MRSA和白色念珠菌导致的伴有全身多处脓肿的感染性心内膜炎的多学科治疗病例。
该患者患有感染性心内膜炎、破坏性甲状腺炎、真菌栓塞导致的出血性脑梗死、肺脓肿、多处骨骼肌脓肿以及弥散性血管内凝血。在进行根治性手术治疗前,需要积极的药物治疗以及机械循环支持。血培养显示MRSA和白色念珠菌呈阳性。对MRSA的基因组分析显示存在葡萄球菌盒式染色体mec IVc以及编码PVL的毒力基因。
由于CA-MRSA菌株产生包括PVL在内的毒素,其致病性高于医疗保健相关的MRSA菌株,对组织的破坏也更大。需要包括积极手术在内的多学科治疗来挽救患者。