Patients with New York Heart Association class II or III heart failure should also receive a Furosemide (Lasix), a commonly used loop diuretic. Heart failure is a condition in which the heart is no longer able to pump oxygen- rich blood to the rest of the body efficiently. This causes fluid to. Describes the medication furosemide (Lasix), a drug used to treat excessive fluid accumulation and swelling (edema) of the body caused by heart failure. As a result of the above considerations, nowadays it is not easy to apply sequential nephron blockage to outpatient settings. Diuretic therapy, and especially loop diuretic therapy, are the usual way of managing congestion, especially in volume-overloaded patients. This material may not otherwise be downloaded, copied, printed, stored, transmitted or reproduced in any medium, whether now known or more info invented, except as authorized in writing by the AAFP. Heart and Stroke Statistical Update. Studies have concluded that readmissions for heart failure could be prevented in at least 40 percent of cases.