4.7 Article

Renal function and decongestion with acetazolamide in acute decompensated heart failure: the ADVOR trial

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EUROPEAN HEART JOURNAL
卷 -, 期 -, 页码 -

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OXFORD UNIV PRESS
DOI: 10.1093/eurheartj/ehad557

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Acute heart failure; acetazolamide; decongestion; kidney function; worsening renal function

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The ADVOR trial demonstrated that acetazolamide has consistent diuretic effects across the entire range of renal function in patients with acute decompensated heart failure (ADHF). Acetazolamide increased the likelihood of successful decongestion, diuresis and natriuresis, especially in patients with lower estimated glomerular filtration rate (eGFR). Although acetazolamide was associated with a higher incidence of worsening renal function, it did not lead to adverse clinical outcomes.
Background and Aims In the ADVOR trial, acetazolamide improved decongestion in acute decompensated heart failure (ADHF). Whether the beneficial effects of acetazolamide are consistent across the entire range of renal function remains unclear.Methods This is a pre-specified analysis of the ADVOR trial that randomized 519 patients with ADHF to intravenous acetazolamide or matching placebo on top of intravenous loop diuretics. The main endpoints of decongestion, diuresis, natriuresis, and clinical outcomes are assessed according to baseline renal function. Changes in renal function are evaluated between treatment arms.Results On admission, median estimated glomerular filtration rate (eGFR) was 40 (30-52) mL/min/1.73 m(2). Acetazolamide consistently increased the likelihood of decongestion across the entire spectrum of eGFR (P-interaction = .977). Overall, natriuresis and diuresis were higher with acetazolamide, with a higher treatment effect for patients with low eGFR (both P-interaction < .007). Acetazolamide was associated with a higher incidence of worsening renal function (WRF; rise in creatinine = 0.3 mg/dL) during the treatment period (40.5% vs. 18.9%; P < .001), but there was no difference in creatinine after 3 months (P = .565). This was not associated with a higher incidence of heart failure hospitalizations and mortality (P-interaction = .467). However, decongestion at discharge was associated with a lower incidence of adverse clinical outcomes irrespective of the onset of WRF (P-interaction = .805).Conclusions Acetazolamide is associated with a higher rate of successful decongestion across the entire range of renal function with more pronounced effects regarding natriuresis and diuresis in patients with a lower eGFR. While WRF occurred more frequently with acetazolamide, this was not associated with adverse clinical outcomes. [GRAPHICS]

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