Patients with CHF benefit from heart rate lowering, and the investigators have previously demonstrated that this does not adversely affect exercise tolerance. In a pacemaker population we also have shown that preventing heart rate lowering is detrimental in terms of symptoms and prognosis. The aim of the study is to therefore to establish whether heart rate limitation in patients with heart failure has a negative impact on exercise capacity. If the investigators establish that this is not the case, physicians will be able to confidently prescribe heart rate lowering agents, and programme pacemakers to allow bradycardia without the concern that there will be detrimental effects of symptom.
Study Type
INTERVENTIONAL
Purpose
TREATMENT
Leeds Teaching Hospitals NHS Trust
Leeds, United Kingdom
RECRUITINGExamining the effects of iatrogenic CI on exercise capacity
Each subject will undergo a full echocardiographic examination.We will assess LV systolic and diastolic function variables, mitral regurgitation, and pulmonary artery pressure.
Time frame: 24 months
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