Causes and predictors of hospital readmissions in patients older than 65 years hospitalized for heart failure with preserved left ventricular ejection fraction in western Romania

Adelina Marioara Mavrea,1 Tiberiu Dragomir,1 Diana Aurora Bordejevic,1 Mirela Cleopatra Tomescu,1 Oana Ancusa,1 Iosif Marincu21Cardiology Department, 2Department of Epidemiology and Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, Timisoara, RomaniaBackground: Heart failure with preserved ejection fraction (HFpEF) is more frequent in the elderly and is associated with important economic implications because of repetitive and prolonged hospitalizations, due to both cardiovascular and noncardiovascular causes.Purpose: To identify the causes, as well as the clinical and biological markers, that could be used as predictors of hospital readmissions in HFpEF patients aged ≥65 years.Patients and methods: Consecutive eligible patients hospitalized for a first heart failure (HF) episode were prospectively included and divided into one of two age groups (elderly: ≥65 years; and nonelderly: <65 years). The clinical features, therapeutic approaches, and clinical outcomes during the 1-year follow-up period were analyzed.Results: A total of 178 patients were included, with a mean age of 64.6±8.6 years; 80 (45%) were women. A total of 98 patients (55%) were aged ≥65 years, and 80 (45%) were aged <65 years. In the group aged ≥65 years, 58 patients (59%) were women, while in the group aged <65 years, 22 patients (28%) were women (P=0.0001). During the 1-year follow-up, no patients died or were lost to follow-up. Moreover, 116 (65%) of the HFpEF patients experienced hospital readmissions. The elderly patients had a significantly higher readmission rate (73% vs 55%, respectively; P<0.02); readmissions due to aggravated HF were significantly more frequent in this age group (41% vs 18%, respectively; P<0.002). Multivariate logistic regression analysis indicated that the independent predictors of readmission due to HF aggravation included plasma levels of brain natriuretic peptide >450 pg/mL (P<0.01) and N-terminal-pro-brain natriuretic peptide >477 pg/mL (P<0.02) in the elderly group, while in the nonelderly group, the independent predictors of this outcome were a New York Heart Association functional class of IV at initial hospitalization (P<0.04), as well as plasma levels of brain natriuretic peptide >390 pg/mL (P=0.03) and tumor necrosis factor (TNF)-α >7.1 pg/mL (P<0.001). Readmissions due to noncardiovascular causes were independently predicted by plasma levels of TNF-α >10 pg/mL in the elderly (P=0.003) and of interleukin (IL)-6 >1.9 pg/mL in the nonelderly (P<0.04).Conclusion: We conclude that in HFpEF patients aged ≥65 years, the main cause of rehospitalization during the 1-year follow-up was HF aggravation. The risk of this outcome was independently predicted by increased levels of cardiac peptides, while the risk of noncardiovascular readmissions was predicted by increased levels of inflammatory biomarkers. Increased TNF-a levels predicted both cardiovascular and noncardiovascular readmissions, while increased levels of high-sensitivity C-reactive protein did not predict any of these outcomes in our study.Keywords: elderly, heart failure with preserved left ventricular ejection fraction, hospital readmission

Nebivolol effect on doxorubicin-induced cardiotoxicity in breast cancer

Flavia Cochera,* Daniel Dinca,* Diana Aurora Bordejevic, Ioana Mihaela Citu, Adelina Marioara Mavrea, Minodora Andor, Mihai Trofenciuc, Mirela Cleopatra Tomescu Cardiology Department, “Victor Babes” University of Medicine and Pharmacy, Timisoara, Romania *These authors contributed equally to this work Purpose: The aim of this study was to assess whether nebivolol treatment could have beneficial effects in the prevention of anthracyclines-induced cardiotoxicity. Patients and methods: Our prospective study included 60 women, mean age 52.6±13 years, with HER2 negative breast cancer, scheduled to undergo treatment with doxorubicin. The patients were randomly divided into two groups: the treatment group (n=30) which received nebivolol 5 mg once daily for the duration of chemotherapy and the control group (n=30) without treatment with nebivolol. Cytostatic treatment was performed with doxorubicin 70 mg/m2 administered intravenously every 21 days for six cycles. The average cumulative dose of doxorubicin was 520±8 mg/m2. Echocardiography was performed immediately before and after six cycles of doxorubicin therapy. Results: We found no significant differences between the two groups regarding baseline clinical and echocardiographic parameters. The two groups reached a similar cumulative dose of doxorubicin. No patient died during the study. None of the patients withdrew from chemotherapy. After six cycles of doxorubicin therapy, the left ventricular (LV) ejection fraction, shortening fraction, and LV diameters changed, but not significantly. Tissue Doppler imaging (TDI) detected in the control group a significant decrease of myocardial velocities, indicating a LV diastolic dysfunction. In the same group, speckle tracking imaging (STI) revealed a statistically significant alteration of the ventricular deformation, which means a decrease in LV systolic function. In the nebivolol treatment group, no significant alterations in the LV systolic and diastolic function were observed. Conclusion: The results of this study show the benefit of new echocardiographic imaging methods such as TDI and STI in the screening of early cardiac dysfunction induced by cytostatic treatment. Nebivolol treatment prevented the occurrence of anthracyclines-induced cardiomyopathy in the short term. In order to confirm these preliminary results, larger studies with a longer follow-up period are required. Keywords: breast cancer, doxorubicin, nebivolol, echocardiography, cardiotoxicity, cardioprotectio