Relieving Congestion in Acute Heart Failure (AHF) Patients. ACUTE HEART FAILURE (AHF) 1M HOSPITALIZEDANNUALLY IN THE US 15-20% SUFFER DELAYED OR POOR RESPONSE TO THERAPY 1in4 READMITTEDWITHIN 30 DAYS AHF Background Heart failure (HF) is a chronic, progressive disease in which the heart is unable to pump enough oxygen-rich blood to the body. Acute HF …