Case Presentation: 72-year-old male with h/o HTN, DM, obesity, polymyalgia rheumatica (on steroids), CKD stage IV, ankylosing spondylitis, and HFrEF (LVEF 45-50%) underwent total knee arthroplasty with removal of prior implant and distal femur replacement for osteosarcoma. Cut to close time was 9 hours. Intraoperatively, the SBP dipped to 90s for about 10-15 minutes after […]