Heart Failure Clinical Trial
Official title:
Study of Electrical Bioimpedance in Heart Failure Patients Followed at the Heart Failure Unit of the Santa Creu i Sant Pau Hospital.
The purpose of this study is to determine how electrical impedance is modified in relation to extracellular space body fluid retention detected by an electrical bioimpedance method in patients with heart failure.
Heart failure (HF) is a clinical syndrome presenting currently a high prevalence, morbidity
and mortality. The lack of sensitivity of symptoms and signs used to make the diagnosis of
the exacerbation of HF, and the knowledge in recent years about the relevance to detect
congestion before consulting a specialist or go to the emergency department, support the
need of more aggressive management of these patients.
Bioimpedance monitoring devices for bioimpedance can provide useful data for the detection
of congestion onset and help the decision-making in treatment.
Because patients with heart failure suffer alterations in body composition, mainly due to
the amount of extracellular water, the bioimpedance can objectify these variations. In heart
failure, bioimpedance has been tested in two studies with small samples of patients
estimating total body water. In other studies , the monitoring of intrathoracic impedance
has been performed by measurement systems implanted in cardiac defibrillators or in cardiac
resynchronization devices. They have proven to be useful for early detection of
decompensation in these patients and to detect changes in impedance before the patient
begins the clinical manifestations. Furthermore, it has been correlated the detection of
decompensation by these devices with significant increases in NT- proBNP (diagnostic and
prognostic marker for HF).
The purpose of our study is to observe these changes in impedance from the patient's skin
surface and non-invasively.
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Observational Model: Cohort, Time Perspective: Prospective
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