Continuous versus bolus dosing of Furosemide for patients hospitalized for heart failure.
Intravenous diuretics are the cornerstone of management for patients hospitalized for heart failure. Physiologic data suggest that intermittent high-dose furosemide promotes neurohormonal activation, which a slow continuous infusion might remediate. However, the limited clinical data comparing dosing schemes are confounded. This study was a randomized, open-label, single-center trial of twice-daily bolus injection versus continuous infusion furosemide in patients hospitalized with heart failure and volume overload. The primary outcome was change in creatinine from admission to hospital day 3 or discharge. Twenty-one patients were randomized to bolus injection and 20 patients to continuous infusion. Baseline characteristics were balanced between study arms except for gender, with a mean age of 60 +/- 15 years, a mean ejection fraction of 35 +/- 19%, and a mean creatinine level of 1.9 +/- 1.2 mg/dl. The mean doses of furosemide were similar between arms over the first 48 hours (162 +/- 48 and 162 +/- 52 mg/24 hours). None of the outcomes differed significantly between bolus and continuous dosing from admission to hospital day 3 or discharge (mean change in creatinine -0.02 vs 0.13 mg/dl, p = 0.18; urine output 5,113 vs 4,894 ml, p = 0.78; length of stay 8.8 vs 9.9 days, p = 0.69). All patients survived to discharge. In conclusion, there were no substantial differences between bolus injection and continuous infusion of equal doses of furosemide for the treatment of patients hospitalized with heart failure. Given the high prevalence of heart failure hospitalization and the disparate results of small studies regarding optimal dosing of loop diuretics to treat these patients, larger multicenter blinded studies are needed.
Allen
Larry A
LA
Colorado Cardiovascular Outcomes Research Group, University of Colorado Denver, Aurora, CO, USA. larry.allen@ucdenver.edu
Turer
Aslan T
AT
Dewald
Tracy
T
Stough
Wendy Gattis
WG
Cotter
Gadi
G
O'Connor
Christopher M
CM
D000368:Aged; D003404:Creatinine / Q000097:blood; D004232:Diuretics / Q000008:administration & dosage*; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D005260:Female; D005500:Follow-Up Studies; D005665:Furosemide / Q000008:administration & dosage*; D005919:Glomerular Filtration Rate / Q000502:physiology; D006333:Heart Failure / Q000097:blood / Q000188:drug therapy* / Q000503:physiopathology; D006801:Humans; D007262:Infusions, Intravenous; D007275:Injections, Intravenous; D007297:Inpatients; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D013318:Stroke Volume / Q000187:drug effects / Q000502:physiology; D016896:Treatment Outcome
D004232:Diuretics; D005665:Furosemide; D003404:Creatinine