Browsing by Author "Kleut, Milena Pavlovic (55902138300)"

Background: Exercise capacity is critical for therapy and prognosis in patients with heart failure (HF). Effect of beta-blockers (BB) on exercise capacity in elderly patients with HF remains unclear. Objectives: To assess contribution of BB to functional capacity and left ventricular (LV) function in the elderly with HF. Design: According to the protocol of CIBIS-ELD study group, elderly patients were treated with BB during 12 weeks. In CPET subgroup, an integral part of the CIBIS ELD study group, patients were performed Doppler echocardiography and cardiopulmonary exercise testing (CPET) before BB therapy and after 12 weeks. Setting: Randomized patients with HF beta blockers naïve. Participants: thirty patients with HF aged over 65 years were included in CPET subgroup, while 847 were incorporated in CIBIS ELD study group. Results: Heart rate (HR) and systolic blood pressure (SBP) after BB significantly decreased at rest (p<0.001) and during exercise (p<0.05), with sustained level of peak VO2. Observed changes of resting HR and peak HR were closely correlated (p<0.001). Significant improvement of LV ejection fraction after BB was obtained (p=0.003) and symptoms of breathlessness were reduced (p=0.001). Left ventricular diastolic dysfunction at rest significantly contributed to exercise capacity (p=0.019). Conclusions: Beta-blockers in elderly patients with HF are related to a significant decrease of HR and SBP, improvement of systolic LV function and sustained exercise tolerance. Resting LV diastolic dysfunction is strongly associated with lower exercise capacity. ©2012, Editrice Kurtis.

Background: Exercise capacity is critical for therapy and prognosis in patients with heart failure (HF). Effect of beta-blockers (BB) on exercise capacity in elderly patients with HF remains unclear. Objectives: To assess contribution of BB to functional capacity and left ventricular (LV) function in the elderly with HF. Design: According to the protocol of CIBIS-ELD study group, elderly patients were treated with BB during 12 weeks. In CPET subgroup, an integral part of the CIBIS ELD study group, patients were performed Doppler echocardiography and cardiopulmonary exercise testing (CPET) before BB therapy and after 12 weeks. Setting: Randomized patients with HF beta blockers naïve. Participants: thirty patients with HF aged over 65 years were included in CPET subgroup, while 847 were incorporated in CIBIS ELD study group. Results: Heart rate (HR) and systolic blood pressure (SBP) after BB significantly decreased at rest (p<0.001) and during exercise (p<0.05), with sustained level of peak VO2. Observed changes of resting HR and peak HR were closely correlated (p<0.001). Significant improvement of LV ejection fraction after BB was obtained (p=0.003) and symptoms of breathlessness were reduced (p=0.001). Left ventricular diastolic dysfunction at rest significantly contributed to exercise capacity (p=0.019). Conclusions: Beta-blockers in elderly patients with HF are related to a significant decrease of HR and SBP, improvement of systolic LV function and sustained exercise tolerance. Resting LV diastolic dysfunction is strongly associated with lower exercise capacity. ©2012, Editrice Kurtis.

Aim: Two-dimensional speckle tracking echocardiography (2D-STE) and three-dimensional echocardiography (3DE) may overcome many limitations of the conventional 2D echocardiography (2DE) in assessing right ventricular (RV) function. We sought to determine whether characteristics of the right atrium and right ventricle as measured by 2D-STE and 3DE are associated with cardiac mortality in patients with ischemic heart failure, over a 6-year follow-up. Materials and Methods: The inclusion criteria were ischemic cardiomyopathy with left ventricular ejection fraction of <40% diagnosed using standard 2DE, 2D-STE, and 3DE examination. Patients were followed for 6 years, and cardiac mortality was recorded. Results: The study sample comprised a total of 54 participants. During the period of follow-up, 24% (13/54) died. The 2DE models showed that being older, having a higher body mass index (BMI), having higher systolic pulmonary artery pressure (SPAP), and a lower RV global longitudinal strain were associated with cardiac mortality in our cohort after 6-year follow-up. Finally, the 3DE models showed that in addition to being older, having higher BMI, having a higher SPAP baseline, lower baseline 3DE RV stroke volume, and larger 3DE RV end-diastolic volume and 3DE RV end-systolic volume were associated with cardiac mortality over 6-year follow-up. Conclusion: This study provides evidence that RV dysfunction as seen on 2D-STE and 3DE could be associated with increased risk of cardiac-related mortality in patients with heart failure over 6 years. © 2024 Journal of Cardiovascular Echography | Published by Wolters Kluwer - Medknow.