Porter Angelina A, Abro Anthony, Desai Nisha, Yazdani Habeeb
Internal Medicine, Ascension Health, Warren, USA.
Internal Medicine, Ascension St. John Hospital, Warren, USA.
Cureus. 2024 Oct 19;16(10):e71870. doi: 10.7759/cureus.71870. eCollection 2024 Oct.
Legionella is a bacterium that primarily causes respiratory infections. Rarely, it can result in extrapulmonary infections like endocarditis. We present a case of native valve endocarditis caused by Legionella in a 74-year-old male. Our patient initially presented with fever, fatigue, confusion, moderate cough, and dysuria. Subsequent presentation included atrial fibrillation and pulmonary infiltrates on chest X-ray. His clinical sequelae and positive urine Legionella antigen prompted treatment with antibiotics and cardiac medication. Echocardiograms revealed vegetation on the mitral valve leaflet suggestive of endocarditis. The patient improved after appropriate antibiotic and anti-arrhythmic therapy. In presenting this case and literature review, we emphasize the importance of considering atypical pathogens in common clinical presentations.
嗜肺军团菌是一种主要引起呼吸道感染的细菌。极少情况下，它可导致心内膜炎等肺外感染。我们报告一例74岁男性由嗜肺军团菌引起的自身瓣膜心内膜炎病例。我们的患者最初表现为发热、乏力、意识模糊、中度咳嗽和排尿困难。随后的表现包括心房颤动和胸部X光显示的肺部浸润。他的临床后遗症及尿嗜肺军团菌抗原阳性促使给予抗生素和心脏药物治疗。超声心动图显示二尖瓣叶上有赘生物，提示心内膜炎。经过适当的抗生素和抗心律失常治疗后，患者病情好转。在报告此病例并进行文献综述时，我们强调在常见临床表现中考虑非典型病原体的重要性。
