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Clinical Trial Summary

Background: Intravenous (IV) loop-diuretics have been a key component in treating pulmonary edema since the nineteen sixties and has a Class 1 recommendation in the 2021 European Society of Cardiology guidelines for heart failure. Conversely, vasodilation was downgraded in the treatment of acute heart failure due to a lack of trials that compare vasodilation with loop-diuretics in a hyperacute clinical setting. This clinical equipoise will be tested in a trial including patients with pulmonary congestion immediately at hospital admission. Primary objective: To determine the superior strategy of loop-diuretics (furosemide), vasodilation (nitrates) or the combination during emergency treatment. Design: Investigator-initiated, randomized, double-blinded, placebo-controlled trial with 1:1:1 allocation. Intervention: Intervention-phase will last 6 hours from study-inclusion, and patients will be allocated to one of three groups: - Boluses of 40 mg IV furosemide + nitrate-placebo as soon as possible and repeated up to 10 times. - Boluses of 3 mg IV isosorbide dinitrate + furosemide-placebo as soon as possible. - Boluses of both 3 mg IV isosorbide dinitrate + of 40 mg as soon as possible.


Clinical Trial Description

IV-loop diuretics are a central part of acute treatment of pulmonary edema and is recommended in guidelines (Class 1 recommendation) with a higher recommendation as compared to vasodilation, which was downgraded from Ia to IIb in the 2021 guidelines for heart failure. However, the effects of loop-diuretics alone or in combination with nitrates compared to nitrates alone is unknown and should be investigated in adequately powered prospective trials to optimize acute treatment of these patients. Trial objective The primary objective is to determine the superior strategy of urgent treatment (starting within 3 hours after hospital-admission) of pulmonary edema. Strategies are: 1. Diuretics (Furosemide), 2. Vasodilation (nitrates), 3. A combination of both furosemide and nitrates. Patient-outcome will be evaluated through the primary endpoint as described elsewhere. Hypothesis: Iv nitrates in combination with iv furosemide are superior compared to iv furosemide alone or iv nitrates alone during initial (first 6 hours) in-hospital treatment of pulmonary edema. "Superior" is defined as a significant benefit on the primary outcome. Study design The study is an investigator-initiated, randomized, placebo-controlled, double-blinded, multicenter, interventional, clinical trial. Following successful completion of screening procedures, patients will be randomized in a 1:1:1 fashion to receive either of the 3 treatments-strategies. Since patients are in cardio-respiratory and mental stress, informed consent prior to the intervention will be impossible. Instead, a legal guardian will be contacted and asked for consent in addition to next of kind and patients regaining mental ability. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05276219
Study type Interventional
Source Rigshospitalet, Denmark
Contact Johannes Grand, MD, Phd
Phone +4522817126
Email johannes.grand@regionh.dk
Status Recruiting
Phase Phase 4
Start date September 14, 2023
Completion date December 31, 2026

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