Case Presentation: A 87 year old female with history of Left ventricular non-compaction(LVNC), HFrEF with EF25-30%, CAD, hypertension, hyperlipidemia presented with acute dyspnea. She denied chest pain, palpitation, lightheadedness. Exam revealed tachycardia, tachypnea and hypoxia, saturating 70% on RA, but no signs of volume overload with baseline chronic lower extremity edema. Her laboratory data showed [...]