ACetazolamide in Patients With Heart Failure, to Decrease Weight and relIEVE Symptoms.

Acute congestion is common in patients with heart failure (HF) and is associated with impaired renal function, reduced quality of life, hospital readmissions, and mortality. Current guidelines recommend optimal decongestion using diuretic therapy, mainly loop diuretics. Although acetazolamide has recently demonstrated efficacy in hospitalized patients, its role in ambulatory patients managed through remote telemonitoring remains to be established. This study aims to evaluate the efficacy of oral acetazolamide added to conventional treatment for decongesting ambulatory HF patients during congestive decompensations.

ACHIEVE is a Phase III multicenter, prospective, interventional, randomized, controlled, open-label superiority trial evaluating the efficacy of oral acetazolamide added to conventional treatment for decongestion in ambulatory patients with heart failure during congestive decompensation monitored by remote telemonitoring.

The primary objective is to assess, at Day 5, whether acetazolamide added to conventional treatment improves decongestion compared with standard treatment alone. Secondary objectives include evaluating efficacy, safety, and health economic outcomes, including quality of life, dyspnea, biological markers, unplanned consultations, hospitalizations, mortality, and hospital medical costs.