The Use of Tolvaptan to Prevent Renal Dysfunction in High Risk Patients With Heart Failure-Pilot Study
The Use of Tolvaptan to Prevent Renal Dysfunction in High Risk Patients With Acute Decompensated Heart Failure-Pilot Study
It is well known that the use of loop diuretics in acute setting may decrease glomerular filtration rate (GFR) and increase serum creatinine leading to renal dysfunction. Loop diuretic induced elevation in serum creatinine can lead to increase in length of hospital stay and possibly morbidity. Previous studies have suggested that tolvaptan unlike aggressive loop diuretic therapy may not activate neurohormonal system nor decrease renal blood flow. These properties may make tolvaptan a useful addition to diuretic therapy to prevent renal dysfunction in high-risk patients. Therefore the primary objective of this study is to determine if the use of tolvaptan in combination with diuretic therapy may prevent development of renal dysfunction in high risk patients with heart failure.
Hypothesis: Administration of tolvaptan in combination with continuous loop diuretic therapy in acutely decompensated heart failure patients at high risk for developing diuretic induced renal dysfunction will have a lower proportion of patients increasing their serum creatinine > 0.3 mg/dL within a 96 hour time frame as compared to patients just receiving standard of care continuous infusion diuretic.
Studieoversigt
Status
Betingelser
Intervention / Behandling
Undersøgelsestype
Fase
- Fase 4
Kontakter og lokationer
Studiesteder
-
-
Michigan
-
Ann Arbor, Michigan, Forenede Stater, 48109
- University of Michigan Health Systems
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- ≥ 18 years old
- Prior clinical diagnosis of systolic heart failure (EF < 40% within the past 18 months) with daily home use of oral loop diuretic for at least one month.
- Daily oral dose of furosemide ≥ 40 mg and ≤ 240 mg (or equivalent)
- Identified within 24 hours of hospital admission
- Heart failure defined by at least 1 symptom (dyspnea, orthopnea, or edema) AND 1 sign (rales on auscultation, peripheral edema, ascites, pulmonary vascular congestion on chest radiography)
- Anticipated need for IV loop diuretics for at least 48 hours
- Likely requires daily net urine output in the range of 1-3 L/day for over a 72-96 hour time period.
- Albumin level < 3.5 g/dL
- Willingness to provide informed consent
Exclusion Criteria:
- Received or planned IV vasoactive treatment (inotropes, vasodilators) or ultra-filtration therapy for heart failure
- BNP < 250 ng/ml or NT-proBNP < 1000 mg/ml (if drawn for clinical purposes)
- Systolic BP < 90 mmHg
- Serum creatinine > 3.0 mg/dl at baseline or renal replacement therapy or creatinine clearances < 10 mL/min
- Serum sodium > 145 mEq/L
- Acute coronary syndrome within 4 weeks
- Anticipated need for coronary angiography or other procedures requiring IV contrast.
- Patients receiving any of the following drugs: clarithromycin, ketoconazole, itraconazole,ritonavir, indinavir, nelfinavir, saquinavir, nefazodone, telithromycin, erythromycin, fluconazole, aprepitant, diltiazem, verapamil, cyclosporine, and grapefruit juice.
- Pregnant or nursing patients.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: Tolvaptan Arm
Tolvaptan 30 mg qd x 3 days and Low Dose Loop Continuous Infusion - Initial Dosing: Furosemide - 10 mg/hr Bumentanide - 0.25 mg/hr Torsemide - 5 mg/hr |
|
|
Placebo komparator: Placebo
Placebo x 3 days and standard of care continuous infusion diuretic
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Renal dysfunction
Tidsramme: 96 hours
|
Increase in serum creatinine > 0.3 mg/dL within a 96 hours from enrollment
|
96 hours
|
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Weight
Tidsramme: 24, 78, 72, 96
|
Change in weight over 24, 48, 72, and 96 hours
|
24, 78, 72, 96
|
|
Urine output
Tidsramme: 24, 48, 72, 96
|
Net urine output over 24, 48, 72, and 96 hours
|
24, 48, 72, 96
|
|
Hospitalization length of stay
Tidsramme: 10
|
10
|
Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Treatment Failure
Tidsramme: 72hr
|
Need to increase diuretic dose in tolvaptan study group prior to 72 hr time point
|
72hr
|
Samarbejdspartnere og efterforskere
Sponsor
Samarbejdspartnere
Efterforskere
- Ledende efterforsker: Barry E Bleske, Pharm. D., University of Michigan
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 11-PAF06621
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