Heart Failure
Conditions
Keywords
Heart failure, Digoxin, Ivabradine
Brief summary
Study hypothesis: Comparing the effect of digoxin and ivabradine in chronic heart failure patients with a left ventricular ejection of 35% or lower and sinus rhythm with heart rate 70 beats per minute or higher, and who are taking maximal dose of a beta blocker if tolerated.
Detailed description
Selected patients have chronic heart failure with left ventricular systolic dysfunction and sinus rhythm. They take optimal medical therapy.
Interventions
Sponsors
Study design
Eligibility
Inclusion criteria
1. Inclusion Criteria: * Left ventricular ejection fraction of 35% or lower (Ischaemic or non-ischaemic etiology) * Sinus rhythm with heart rate of 70 beats per minute or higher * Symptomatic heart failure with functional capacity of New York Heart Association class II, III, IV 2.
Exclusion criteria
* Chronic renal failure with glomerular filtration rate \<30 ml/min * Atrial fibrillation * Pace maker rhythm * Advanced stage chronic obstructive lung disease * Comorbidity with expected survival below 1 year
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Cardiac function and functional status and biochemical parameters | After 6 months | Cardiac function (echocardiography): Systolic function (left ventricular ejection fraction) and diastolic function (Doppler E/A ratio, tissue Doppler e/e1 ratio, Doppler deceleration time of the E wave, left atrium volume index) Maximal oxygen consumption will be evaluated with cardiopulmonary exercise testing Changes in proBNP level (serum value) after treatment |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Cardiovascular mortality | Up to 6 months | Death from cardiovascular reasons |
| All cause mortality | Up to 6 months | Death from any cause. |
| Hospital admission for worsening heart failure | Up to 6 months | — |
| Heart rate and blood pressure | After 6 months | Changes in heart rate and blood pressure. |
Other
| Measure | Time frame |
|---|---|
| Hospitalization for a cardiovascular reason | Up to 6 months |
Countries
Turkey (Türkiye)