Case Presentation: A 71-year-old man with history of coronary artery disease, aortic stenosis status post transcatheter aortic valve replacement (TAVR) two years ago, and ankylosing spondylitis presented to the emergency department for evaluation of 3 days of subjective fevers, worsening generalized weakness requiring one-person assist for ambulation, and tachycardia on his smart watch in the [...]