Association between Lung Fluid Levels Estimated by Remote Dielectric Sensing Values and Invasive Hemodynamic Measurements

Imamura, Teruhiko; Hori, Masakazu; Ueno, Yohei; Narang, Nikhil; Onoda, Hiroshi; Tanaka, Shuhei; Kataoka, Naoya; Sobajima, Mitsuo; Fukuda, Nobuyuki; Ueno, Hiroshi; Kinugawa, Koichiro

doi:10.3390/jcm11051208

Cited by 22 publications

(15 citation statements)

References 9 publications

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“…In previous studies, the ReDS value had a robust collinearity with the lung fluid amount quantified by highresolution computed tomography, whereas there was a moderate correlation between ReDS values and pulmonary artery wedge pressure. 4,5,7) Overall, despite relatively incremental intra-cardiac pressure, our patients seem to have less advanced pulmonary volume overload.…”

Section: Association Between Reds Values and Bnp Levelsmentioning

confidence: 70%

Correlation Between Plasma B-Type Natriuretic Peptide Levels and Remote Dielectric Sensing in Patients with Heart Failure

et al. 2022

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Plasma B-type natriuretic peptide (BNP) is a practical tool with which to estimate hemodynamic status including intra-cardiac pressure in patients with heart failure (HF). However, plasma BNP levels cannot be measured immediately in an outpatient private clinic. We investigated the value of remote dielectric sensing (ReDS), a novel non-invasive electromagnetic energy-based tool to quantify lung fluid amount immediately, to predict plasma BNP levels.Successive measurements of ReDS values and plasma BNP levels were performed in patients hospitalized to treat HF in a prospective manner. Correlations between ReDS values and plasma BNP levels were assessed.A total of 117 datasets for HF patients were obtained in this prospective study. The median ReDS value was 28% (interquartile range: 25%, 34%) and the median plasma BNP level was 205 (86, 469) pg/mL, both of which had a slight correlation (r = 0.234, P = 0.011). Their correlation improved when those with a body mass index less than 18.5 (n = 23) were excluded (r = 0.278, P = 0.007).ReDS might be a practical tool for estimating plasma BNP levels, particularly in outpatient private clinics where the immediate measurement of plasma BNP levels is not available.

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Section: Association Between Reds Values and Bnp Levelsmentioning

confidence: 70%

Correlation Between Plasma B-Type Natriuretic Peptide Levels and Remote Dielectric Sensing in Patients with Heart Failure

et al. 2022

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“…Assessment of pulmonary congestion can be challenging. The ReDS system can quantify the degree of pulmonary congestion with reasonable accuracy when compared to other modalities, including high-resolution computed tomography [ 5 ], right heart catheterization [ 4 ], and lung ultrasound [ 11 ].…”

Section: Discussionmentioning

confidence: 99%

“…The remote dielectric sensing (ReDS TM , Sensible Medical Innovations Ltd., Netanya, Israel) system is a non-invasive electro-magnetic technology that quantifies the degree of pulmonary congestion within one minute of application and without needing a high level of technical expertise [ 3 ]. ReDS values, whose normal range is suggested between 20% and 35%, have been shown to have a moderate correlation (i.e., approximate r value of 0.6) with other modalities, including chest-computed tomography and pulmonary capillary wedge pressure [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Association between Remote Dielectric Sensing and Estimated Plasma Volume to Assess Body Fluid Distribution

Imamura

Izumida

Narang

et al. 2023

JCM

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Background: Pulmonary congestion is quantified by a remote dielectric sensing (ReDSTM) system, while systemic congestion is estimated by calculated plasma volume. The type of clinical patient profile as defined by the ReDS system and calculated plasma volume remains uncertain. Methods: Hospitalized patients with or without heart failure were included in this prospective study. On admission, ReDS values were measured and plasma volume status (PVS) was estimated using their body weight at the same time. Cutoffs of ReDS value and PVS were defined at 34% and −2.7%, respectively. The association between the two parameters was assessed. Results: A total of 482 patients (median 76 years, 288 men) were included. The median ReDS value was 28% (25%, 32%) and median PVS was −16.4% (−26.3%, −5.9%). Of the patients, 64 had high ReDS value (and low PVS) and 80 had high PVS (and low ReDS value). The high ReDS group had a higher prevalence of clinical heart failure with a more elevated echocardiographic E/e’ ratio, whereas the high PVS group had a higher prevalence of chronic kidney disease (p < 0.05 for all). Four out of a total of six patients with high ReDS value and high PVS had both heart failure and chronic kidney disease profiles. Conclusion: The combination of ReDS value and PVS was able to clinically stratify the types of body fluid distribution and patient profiles. Utilizing these tools may assist the clinician in constructing a therapeutic strategy for the at-risk hospitalized patient.

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“…The remote dielectric sensing (ReDS TM , Sensible Medical Innovations Ltd., Netanya, Israel) system is a novel electromagnetic-based method to quantify lung fluid levels with robust inter-rater and intra-rater reliability ( Figure 1 ) [ 4 , 5 , 6 ]. According to the previous studies, ReDS values had an acceptable correlation with pulmonary capillary wedge pressure, measured by right heart catheterization and lung fluid amounts, calculated by high-resolution computed tomography in patients with chronic heart failure [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Chronotype of Lung Fluid Levels in Patients with Chronic Heart Failure

Ueno

Imamura

Narang

et al. 2022

JCM

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Background: The variation in lung fluid levels dependent on chronotype in patients with chronic heart failure is unclear. Remote dielectric sensing (ReDSTM) is a novel non-invasive system to quantify the lung fluids, which may correlate to intracardiac filling pressures. We aimed to understand the variation in ReDS measurements by chronotype in patients with chronic heart failure. Methods: The patients who were hospitalized for heart failure exacerbations between November 2021 and March 2022 were prospectively included. ReDS values were measured at clinically stable conditions at the following three time points during the day: 5:00 (morning), 12:00 (noon), and 21:00 (night) (manufacture-recommended reference of ReDS value: between 25% and 35%). Results: Twelve patients were included. The median age was 84 (75, 90) years and four patients (33%) were men. The median plasma B-type natriuretic peptide was 235 (178, 450) pg/mL. The median ReDS value was 38% (23%, 41%) in the morning. The ReDS value decreased significantly at the noon measurement, down to 28% (23%, 29%) (p = 0.005) and again increased significantly at the night measurement, up to 31% (27%, 42%) (p = 0.002). The patients were clinically stabilized during the observational period. Conclusions: the lung fluid level varied considerably in patients with chronic heart failure following clinical stabilization.

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Association between Lung Fluid Levels Estimated by Remote Dielectric Sensing Values and Invasive Hemodynamic Measurements

Cited by 22 publications

References 9 publications

Correlation Between Plasma B-Type Natriuretic Peptide Levels and Remote Dielectric Sensing in Patients with Heart Failure

Correlation Between Plasma B-Type Natriuretic Peptide Levels and Remote Dielectric Sensing in Patients with Heart Failure

Association between Remote Dielectric Sensing and Estimated Plasma Volume to Assess Body Fluid Distribution

Chronotype of Lung Fluid Levels in Patients with Chronic Heart Failure

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