Heart Failure Clinical Trial
Official title:
Randomized-Controlled-Double Blind Trial of Low Dose Dobutamine in Advanced Heart Failure Patients in a Day-Care Clinic
Heart failure (HF) is a prevalent disease reaching 1-2% of adult population in developed
countries, and 10% in patients over 70 years. In the past HF patients had a 5-year mortality
rate of 60-70% of HF with high rate of hospitalization and disability leading to a HF
epidemic. Treatment improvements in the past decades have significantly reduced
hospitalization and mortality. However, there is an increasing subset of patients (>10%)
with advanced HF symptoms (functional class III/IV) for whom current management strategies
are limited and do not provide a significant improvement in morbidity, mortality and quality
of life.
Specialized HF clinics, implementing a comprehensive therapeutic approach, were suggested to
be beneficial in this population. However, the design of these clinics is variable with
different methods of follow-up, therapy and supervision. Intermittent infusions of
dobutamine were previously inconclusive regarding symptom alleviation and hemodynamic
improvement and raised a concern of increased mortality in HF patients. Furthermore, the
evidence scope is narrow since most trials including inconsistent and relatively high
dobutamine dosages. Accordingly, current guidelines do not provide specific recommendations
for dobutamine therapy in stable HF patients, and indication for treatment are limited for
acute HF with hypotension and signs of hypoperfusion, or alleviation of symptoms in severely
symptomatic patients in stage D HF.
The primary aim of the proposed study is to evaluate the impact of intermittent low-dose
dobutamine infusion on clinical and hemodynamic parameters in advanced HF patients treated
in a tertiary heart failure clinic in the setting of a randomized clinical trial. We
hypothesize that intermittent therapy with low-dose dobutamine will be associated with
improved functional capacity and quality of life among patients with advanced heart failure,
thereby providing evidence for beneficial effects of a potentially important therapeutic
regimen in this high risk population.
n/a
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
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