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      Bisoprolol Improves Echocardiographic Parameters of Left Ventricular Diastolic Function in Patients with Systemic Hypertension

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          Left ventricular (LV) diastolic dysfunction (LVD) is a common complication secondary to hypertension. It has been reported that bisoprolol is effective in reducing blood pressure and has beneficial cardiac effects in patients with hypertension. However, its effect on LV diastolic function has not been studied in detail. In this study, we sought to determine bisoprolol’s effect on left ventricle diastolic function. Data from 25 patients were statistically analyzed. Peaks E and A wave, E/A ratio, isovolumetric relaxation time and E wave deceleration time were measured echocardiographically. Doppler echocardiography measurements after bisoprolol treatment revealed an improvement in LV diastolic function. In conclusion, our results show that treatment with bisoprolol, improves echocardiographic parameters of LV diastolic function after 3 months of treatment.

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          Most cited references 26

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          Congestive heart failure in subjects with normal versus reduced left ventricular ejection fraction

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            Antiremodeling effects on the left ventricle during beta-blockade with metoprolol in the treatment of chronic heart failure.

            The purpose of the study was to investigate the effects of beta1-blockade on left ventricular (LV) size and function for patients with chronic heart failure. Large-scale trials have shown that a marked decrease in mortality can be obtained by treatment of chronic heart failure with beta-adrenergic blocking agents. Possible mechanisms behind this effect remain yet to be fully elucidated, and previous studies have presented insignificant results regarding suspected LV antiremodeling effects. In this randomized, placebo-controlled and double-blind substudy to the Metoprolol CR/XL Randomized Intervention Trial in Heart Failure (MERIT-HF), 41 patients were examined with magnetic resonance imaging three times in a six-month period, assessing LV dimensions and function. Decreases in both LV end-diastolic volume index (150 ml/m2 at baseline to 126 ml/m2 after six months, p = 0.007) and LV end-systolic volume index (107 ml/m2 to 81 ml/m2, p = 0.001) were found, whereas LV ejection fraction increased in the metoprolol CR/XL group (29% to 37%, p = 0.005). No significant changes were seen in the placebo group regarding these variables. Left ventricular stroke volume index remained unchanged, whereas LV mass index decreased in both groups (175 g/m2 to 160 g/m2 in the placebo group [p = 0.005] and 179 g/m2 to 164 g/m2 in the metoprolol CR/XL group [p = 0.011). This study is the first randomized study to demonstrate that the beta1-blocker metoprolol CR/XL has antiremodeling effects on the LV in patients with chronic heart failure and consequently provides an explanation for the highly significant decrease in mortality from worsening heart failure found in the MERIT-HF trial.
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              Is Open Access

              Diastolic dysfunction and diastolic heart failure: diagnostic, prognostic and therapeutic aspects

              Left ventricular (LV) diastolic dysfunction (DD) and diastolic heart failure (HF), that is symptomatic DD, are due to alterations of myocardial diastolic properties. These alterations involve relaxation and/or filling and/or distensibility. Arterial hypertension associated to LV concentric remodelling is the main determinant of DD but several other cardiac diseases, including myocardial ischemia, and extra-cardiac pathologies involving the heart are other possible causes. In the majority of the studies, isolated diastolic HF has been made equal to HF with preserved systolic function (= normal ejection fraction) but the true definition of this condition needs a quantitative estimation of LV diastolic properties. According to the position of the European Society of Cardiology and subsequent research refinements the use of Doppler echocardiography (transmitral inflow and pulmonary venous flow) and the new ultrasound tools has to be encouraged for diagnosis of DD. In relation to uncertain definitions, both prevalence and prognosis of diastolic heart failure are very variable. Despite an apparent lower death rate in comparison with LV systolic HF, long-term follow-up (more than 5 years) show similar mortality between the two kinds of HF. Recent studies performed by Doppler diastolic indexes have identified the prognostic power of both transmitral E/A ratio 1.5 (restrictive patterns). The therapy of LV DD and HF is not well established but ACE-inhibitors, angiotensin inhibitors, aldosterone antagonists and β-blockers show potential beneficial effect on diastolic properties. Several trials, completed or ongoing, have been planned to treat DD and diastolic HF.

                Author and article information

                S. Karger AG
                September 2006
                29 September 2006
                : 106
                : 3
                : 127-131
                aGolcuk Army Hospital, Department of Cardiology, Golcuk, Kocaeli, bGulhane Haydarpasa Teaching Hospital, Department of Cardiology, Istanbul, and cGulhane Military Medical Academy, Department of Cardiology, Ankara, Turkey
                92766 Cardiology 2006;106:127–131
                © 2006 S. Karger AG, Basel

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                Page count
                Figures: 1, Tables: 2, References: 34, Pages: 5
                Original Research


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