Acute Decompensated Heart Failure Clinical Trial
Official title:
Exploring Diuretics Effective Management in Acute Decompensated Heart Failure, EDEMA Trial
1. Evaluate efficacy and safety of continuous infusion of IV Frusemide compared to IV shots in acute decompensated heart failure ADHF 2. Evaluate superiority of time-adjusted metolazone to morning frusemide IV shots compared to irrespective administration (at random times) to overcome diuretic resistance
After admission for acute decompensated heart failure and ensuring eligibility to participate in the study, accepting patients will be randomized by a pre-prepared tables into 2 equal groups (A = shots, B = infusion): - Patients randomized to the Frusemide IV shots arm (group A) will be started on 80 mg frusemide daily (or at the least equal to their prior oral dose if was on >80 mg oral frusemide or equivalent doses of other loop diuretics). Dose will be allowed to be modified by judging the urine output in every 3 hours. Patients randomized to continuous IV infusion arm (group B) will receive 84 mg Frusemide daily (40 mg bolus followed by 2 mg/ hour starting infusion rate). An extra bolus and/or modification of the infusion rate will be allowed after judging the urine output in 3 hours. The same regimen would be continued for at least 72 hours, or more than 72 hours if needed till switching to oral diuretics. In patients who develop diuretic resistance defined as failure to achieve therapeutically desired urine output despite maximal doses of loop diuretics will be managed by adding thiazide type diuretic "Metolazone" to the regimen to achieve sequential nephron blockade. Metolazone (2.5 - 10 mg /day) addition will be allowed in both arms when deemed indicated, however, in the IV shots arm, there will be further 1:1 randomization for either giving metolazone timed 60 minutes before the morning IV frusemide shot (group A.T) or metolazone at random time irrespective of the frusemide dose timing (group A.R). Variables that will be assessed in the patients to evaluate the prespecified end-points are:- - Urine output in L/day as absolute volume and indexed volume to body weight. - Weight loss in Kg as absolute number and in percentage of initial body weight. - Diuretic efficiency defined as amount of urine output per 40mg frusemide. - Impact on hemodynamics assessed by change in mean arterial pressure, inducing hypotension (systolic below 80 mmHg or requiring denovo vasopressors), or new clinical signs of hypoperfusion. - Cumulative dose of IV frusemide per 72 hours. - Improvement of NYHA class as judged by the treating physician. - Number of days to introduction/restoring dose of betablockade therapy. - Number of days to switch to oral diuretics as judged by the treating physician. - Duration of ICU stay and of hospital stay. - Change in serum creatinine (either rising or falling) in absolute value and percentage from baseline creatinine, as well as in eGFR equated by Cockcroft-Gold equation. - Occurrence of worsening renal function (WRF) as defined by rise of serum creatinine by ≥ 0.3 mg/dl. - Occurrence of 50% and or 100% rise in serum creatinine or indication to renal replacement therapy. - Change in serum potassium as absolute value from baseline or below target range (between 4.0 - 5.0 mEq/dl). Serum potassium level will be routinely checked twice daily in the first 72 hours then once daily or every 48 hours as seen necessary. - Inducing denovo hypomagnesemia (below 1.8mg/dl) or hyponatremia (below 135 mEq/dl) - Rehospitalization within 30 days for new heart failure decompensation, and hospitalization for any cause. VI. Study outcomes 1. Primary outcome - Time (in hours) to improvement of NYHA class when frusemide is given as shots compared to infusion. - Urine output (in ml/kg/h) per 40 mg of frusemide given as shots vs continuous infusion. 2. Secondary outcome(s) - Assessment of additive benefit of addition of metolazone to frusemide in ADHF. - Evaluating superiority of timely adjusted metolazone compared to given at random in overcoming resistance to IV frusemide (IV shots arm). ;
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