Intermittent levosimendan infusions for advanced heart failure: a systematic review and meta-analysis of randomized controlled trials

Intermittent intravenous infusions of levosimendan have been shown to provide benefits in patients with advanced heart failure (AHF), preventing HF rehospitalization and mortality.

We aim to investigate the efficacy of intermittent intravenous levosimendan infusion in patients with AHF.

A systematic review and meta-analysis synthesizing evidence from randomized controlled trials (RCTs) obtained from PubMed, Embase Cochrane, Scopus, and WOS until September 2023. We used the random-effects model to report dichotomous outcomes using risk ratio (RR) and continuous outcomes using mean difference (MD), with a 95% confidence interval (CI). Finally, we implemented a trial sequential analysis (TSA) to improve the reliability of our results.

We included 15 RCTs with 1,181 patients. Intermittent levosimendan was significantly associated with an improved left ventricular ejection fraction (LVEF) compared to placebo (MD: 6,39, 95% CI [3.04, 9.73], P= 0.002; I2=75, P=0.0005), with cumulative Z-score of change after ≤ 1 week passing the monitoring boundaries favors the levosimendan but did not cross the required information size. Additionally, there was a significant improvement in the all-cause mortality rate favoring levosimendan (RR: 0.60, 95% CI [0.40, 0.90], P= 0.01; I2=9, P=0.36). However, There was no difference between intermittent levosimendan and placebo in all-cause rehospitalization rate (RR: 0.75, 95% CI [0.46, 1.22], P= 0.25; I2=70, P=0.04) or event-free survival rate (RR: 0.97, 95% CI [0.72, 1.30], P= 0.84; I2=63, P=0.03).

In patients with AHF, intermittent levosimendan significantly improved LVEF and all-cause mortality rate. However, there was no effect on rehospitalization or event-free survival.Figure 1.

LVEF and TSA