An 83-year-old male with a history of HFrEF (40%), CAD, hypertension, and hyperlipidemia presented to the ED with generalized weakness and fatigue. His vitals were remarkable for hypotension with a MAP of 58. On physical exam, the patient appeared non-toxic and was able to answer questions appropriately. He did not appear frankly fluid overloaded, other than mild, chronic peripheral edema. Additional laboratory studies and chest x-ray were performed. A fluid bolus was given to treat his hypotension, however there was minimal response. Given his heart failure, there was concern that aggressive fluid resuscitation would result in pulmonary edema. Additionally, inserting a central line and starting vasopressors is not without risk. Fortunately, this clinical team knows how to use ultrasound to do a proper volume assessment to manage this patient appropriately…