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Bioimpedance Spectroscopy for the Evaluation of Heart Failure (BIS-HF)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT02764073
Recruitment Status : Recruiting
First Posted : May 6, 2016
Last Update Posted : February 27, 2019
Information provided by (Responsible Party):
Professor Adrian Covic, Grigore T. Popa University of Medicine and Pharmacy

Brief Summary:

Despite impressive improvements in treatment strategies, heart failure (HF) morbidity and mortality remains substantially high worldwide. Pulmonary congestion is considered the leading cause for hospital admissions and death among patients with HF. Physical examination is crucial for titrating medical treatment in these patients, but despite a good specificity it is not sensitive enough to detect early elevated cardiac filling pressures.

The N-terminal pro-B-type natriuretic peptide (NT-proBNP) is a recognized powerful predictor for HF prognosis. Recently, cardiotrophin-1 and galectin-3 have been proposed as new relevant biomarkers for HF evaluation.

Echocardiography can be also used to noninvasively measure left ventricular filling pressures. Lung ultrasound (LUS) through interstitial B-line evaluation has been recently proposed as a bed-side, noninvasive tool to assess interstitial lung water. B-lines correlate with NT-proBNP and E/e' levels in patients with acute dyspnea, chronic HF or after a stress test. LUS can also identify clinically silent pulmonary edema, suggesting that it may complement clinical evaluation to improve hemodynamic profiling and treatment optimization.

Biompedance is a bedside method for total body fluid status assessment. It defines individual fluid status/compartments/overload on the basis of an individual's normal extracellular volume and body composition. Recent studies indicate that bioimpedance-derived fluid overload indices are independent predictors of mortality in renal failure patients.

To date, no study has evaluated bioimpedance performance for fluid assessment in HF patients. The investigators aim to cross-sectionally compare bioimpedance parameters with clinical evaluation, LUS, cardiac biomarkers, and echocardiographic characteristics, in a cohort of incident consecutive patients with HF. Two years patients' survival will be evaluated to propose the best evaluative algorithm and rank the various methods for prognostic significance.

Condition or disease Intervention/treatment
Heart Failure Device: Bioimpedance spectroscopy Device: Lung Ultrasonography Device: Echocardiography

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Study Type : Observational
Estimated Enrollment : 150 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Bioimpedance Spectroscopy for the Evaluation of Heart Failure - a Comparison With Clinical Assessment, Lung Ultrasonography, Cardiac Biomarkers and Echocardiography
Study Start Date : May 2016
Estimated Primary Completion Date : May 2020
Estimated Study Completion Date : May 2020

Resource links provided by the National Library of Medicine

Intervention Details:
  • Device: Bioimpedance spectroscopy
    The technique involves attaching electrodes to the patient's forearm and ipsilateral ankle, with the patient in a supine position. The BCM® measures the body resistance and reactance to electrical currents of 50 discrete frequencies, ranging between 5 and 1000 kHz. Based on a fluid model using these resistances, the extracellular water (ECW), the intracellular water (ICW) and the total body water (TBW) are calculated. All calculations are automatically performed by the software of the BCM® device. Absolute fluid overload (AFO) is is defined as the difference between the expected patient's ECW under normal physiological conditions and the actual ECW, whereas the relative fluid overload (RFO) is defined as the absolute fluid overload AFO to ECW ratio.
    Other Name: BCM®Body Composition Monitor - Fresenius Medical Care D GmbH
  • Device: Lung Ultrasonography
    Examinations will be performed in the supine position. Scanning of the anterior and lateral chest will be performed on both sides of the chest, from the second to the fourth (on the right side to the fifth) intercostal spaces, at parasternal to mid-axillary lines. B-lines will be recorded in each intercostal space and were defined as a hyperechoic, coherent US bundle at narrow basis going from the transducer to the limit of the screen. B-lines starting from the pleural line can be either localized or scattered to the whole lung and be present as isolated or multiple artifacts (with a distance 7 mm between 2 artifacts). The sum of B-lines produces a score reflecting the extent of lung water accumulation (0 being no detectable B-line).
  • Device: Echocardiography
    All echocardiographic measurements will be carried out according to the recommendations of the American Society of Echocardiography by an observer unaware of the lung ultrasound and bioimpedance results. Echocardiographic evaluation will provide information about cardiac anatomy (e.g. volumes, geometry, mass) and function (e.g. left ventricular function and wall motion, valvular function, right ventricular function, pulmonary artery pressure, pericardium).

Primary Outcome Measures :
  1. The relationship between bioimpedance derived parameters (TBW, ICW, ECW, RFO), clinical assessment, lung congestion (as assessed by lung ultrasonography), echocardiography and different cardiac biomarkers. [ Time Frame: 2 years ]

Secondary Outcome Measures :
  1. The impact of baseline bioimpedance characteristics (TBW, ICW, ECW, RFO) on all-cause mortality. [ Time Frame: 2 years ]
  2. The impact of baseline bioimpedance characteristics (TBW, ICW, ECW, RFO) on fatal and non-fatal cardiovascular events. [ Time Frame: 2 years ]
  3. The impact of baseline bioimpedance characteristics (TBW, ICW, ECW, RFO) on hospitalizations. [ Time Frame: 2 years ]

Biospecimen Retention:   Samples Without DNA

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with Heart Failure

Inclusion Criteria:

  1. age ≥18 years;
  2. HF diagnosis regardless of cause as defined by the Framingham criteria and satisfying the European Society of Cardiology guidelines;

Exclusion Criteria:

  1. metallic joint prostheses, cardiac stent or pacemakers, decompensated cirrhosis, pregnancy and limb amputations (due to bioimpedance technique limitations);
  2. no prior diagnosis of pulmonary fibrosis (due to lung ultrasonography limitations);
  3. absence of congenital heart disease

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02764073

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Contact: Dimitrie Siriopol, Lecturer

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Dr. CI Parhon Recruiting
Iaşi, Romania
Contact: Dimitrie Siriopol   
Sponsors and Collaborators
Grigore T. Popa University of Medicine and Pharmacy

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Responsible Party: Professor Adrian Covic, Professor, Grigore T. Popa University of Medicine and Pharmacy Identifier: NCT02764073     History of Changes
Other Study ID Numbers: BIS-HF
First Posted: May 6, 2016    Key Record Dates
Last Update Posted: February 27, 2019
Last Verified: February 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Keywords provided by Professor Adrian Covic, Grigore T. Popa University of Medicine and Pharmacy:
Heart failure
Lung ultrasonography
Additional relevant MeSH terms:
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Heart Failure
Heart Diseases
Cardiovascular Diseases