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Combining Loop and Thiazide Diuretics Across the Left Ventricular Ejection Fraction Spectrum
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DOI：10.1016/j.jchf.2024.05.006.png)
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Abstract
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BACKGROUND The addition of hydrochlorothiazide (HCTZ) to furosemide in the CLOROTIC (Combining Loop with Thiazide Diuretics for Decompensated Heart Failure) trial improved the diuretic response in patients with acute heart failure (AHF). OBJECTIVES This work aimed to evaluate if these results differ across the spectrum of left ventricular ejection fraction (LVEF). METHODS This post hoc analysis of the randomized, double-blind, placebo-controlled CLOROTIC trial enrolled 230 patients with AHF to receive either HCTZ or a placebo in addition to an intravenous furosemide regimen. The influence of LVEF on primary and secondary outcomes was evaluated. RESULTS The median LVEF was 55%: 166 (72%) patients had LVEF >40%, and 64 (28%) had LVEF <= 40%. Patients with a lower LVEF were younger, more likely to be male, had a higher prevalence of ischemic heart disease, and had higher natriuretic peptide levels. The addition of HCTZ to furosemide was associated with the greatest weight loss at 72 of 96 hours, better metrics of diuretic response, and greater 24-hour diuresis compared with placebo, with no significant differences according to the LVEF category (using 2 LVEF cutoff points: 40% and 50%) or LVEF as a continuous variable (all P values were insignificant). There were no significant differences observed with the addition of HCTZ in terms of mortality, rehospitalizations, or safety endpoints (impaired renal function, hyponatremia, and hypokalemia) among the 2 LVEF groups (all P values were insignificant). CONCLUSIONS Adding HCTZ to intravenous furosemide seems to be effective strategy for improving diuretic response in AHF without treatment effect modification according to baseline LVEF. (Combining Loop with Thiazide Diuretics for Decompensated Heart Failure [CLOROTIC], NCT01647932; Randomized, double blinded, multicenter study, to asses Safety and Efficacy of the Combination of Loop With Thiazide-type Diuretics vs Loop diuretics with placebo in Patients With Decompensated, EudraCT Number 2013-001852-36)
Keywords:
acute heart failure
diuretics
hydrochlorothiazide
left ventricular ejection fraction
thiazides
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