Hematological effects of Levosimendan therapy in patients with heart failure

Abstract

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Levosimendan is an inotropic drug, acting as calcium sensitizer, used in the management of acute heart failure. Despite its hemodynamic benefits, Levosimendan is associated with several adverse reactions, including hematological effects, with a hemoglobin value decrease, causing anemia. Acute coronary syndromes (ACS) might be a precipitant of acute heart failure, in a substantial proportion of cases. These situations may require the use of inotropic drugs, such as Levosimendan. Antithrombotic therapy is the cornerstone therapy for management of acute coronary syndromes, and the decision of which strategy is determined by the balance of ischemic and hemorrhagic risks. Therefore, in the management of acute heart failure, associated with ACS, the use of Levosimendan might be associated with the increase of hemorrhagic risk, due to hemoglobin decrease, influencing the antithrombotic therapy strategy choice. Purpose This study aims to evaluate the effect of the use of Levosimendan on the hemoglobin value, comparing with Dobutamine, in patients hospitalized for ACS. Methods We analyzed a retrospective, multicenter, observational cohort of 317 patients, admitted for ACS, requiring inotropic therapy. The population was divided into two groups: a group that used Levosimendan and a group that used Dobutamine. The mean decrease in hemoglobin value, and the minimum hemoglobin value, during hospitalization, was compared between both groups. Results Levosimendan sample included 39 patients, of which 40,1% (n=15) were women, with a mean age of 83±12,1 year old, while Dobutamine sample had 278 elements, of which 38% (n=105) were women with a mean age of 82±12,1. There was no statistically significant difference between both samples on age and sex distribution. Levosimendan group had a mean minimum hemoglobin value of 10,7±2,2 g/dL and a mean decrease in hemoglobin value, during hospitalization, of 2,7±1,9 g/dL, while Dobutamine group had a mean minimum hemoglobin value of 10,7±2,2 g/dL and a decrease in hemoglobin value, during hospitalization, 2,1±1,9g/dL. There was no statically significant difference on mean minimum hemoglobin value on both samples (p>0,05), however, there was a statistically significant difference, with a higher decrease in mean hemoglobin value, during hospitalization in patients using Levosimendan, comparing with patients using Dobutamine (2,7±1,9g/dL vs 2,1±1,9g/dL, p=0,04). Conclusion Levosimendan is associated with a higher decrease in hemoglobin value. As heart failure might complicate ACS episode, and might require inotropic therapy, we should be aware that the choice of using Levosimendan in these situations may confer a greater risk of bleeding, associated with the higher decrease in hemoglobin value, in patients who need intense antithrombotic therapy.