Importance of non selective beta blockade in congestive heart failure - Experiences with carvedilol treatment in Bosnia and Herzegovina

Objectives: The aim of this study was to investigate the effects of carvedilol treatment through improvement of New York Heart Association (NYHA) class, ejection fraction (EF) and blood pressure (BP) values in patients with chronic heart failure (CHF). Methods: This multicenter, observational, non-interventional was conducted in 25 medical centers in Bosnia and Herzegovina, from April 2015 until December 2015 (nine months). It included 167 patients of both genders, older than 50 years, who were diagnosed with CHF according to the NYHA classification and had EF <50%. The patients were administered carvedilol tablets and were followed during six visits: baseline and five follow-ups, over the period of 24 weeks. Results: At the beginning of the study, CHF NYHA class I was present in 5 (3.0%) patients, NYHA class II in 76 (45.5%) and NYHA class III in 66 (39.5%) patients. After 24 weeks, CHF NYHA class I was present in 43 (25.7%) patients, NYHA class II in 75 (44.9%) and NYHA class III in 21 (12.6%) patients. There is a statistically significant change of NYHA class before and after 24 weeks of treatment with carvedilol (rho=0.272; p=0.002). At the baseline observation, mean value of EF was 43.06±9.6%. after 24 weeks of treatment, the mean value of EF increased to 48.15±10.51% (p=0.0001). Average increase of EF after the treatment was 5%, or ranging from 1.5-7.5%. Systolic and diastolic blood pressure significantly decreased from baseline to final observation (-15.4 mmHg and -9.18 mmHg; p=0.0001). Conclusion: Carvedilol is effective in improvement of NYHA class and ejection fraction as well as in reduction of high blood pressure in patients with congestive heart failure. Keywords: chronic heart failure, NYHA classification, carvedilol, treatment efficacy