This study sought to determine the feasibility of using noninvasive cardiac hemodynamics (NICHE), a new noninvasive Doppler-based device, to monitor real-time, simultaneous tissue and blood-flow Doppler measurements in a clinical setting, and to obtain preliminary performance data compared to a commercially available system. Doppler-based measurements have been shown to correlate well with invasive hemodynamic data and diastolic function, but their use in clinical applications has been limited by various technical issues. The NICHE device was developed to obtain simultaneous tissue and blood-flow Doppler measurements automatically, in real-time and in a hands-free manner. Thirty participants (ten normal volunteers and 20 patients in a cardiac rehab program) underwent standard echocardiographic/Doppler studies followed immediately by NICHE monitoring. Early diastolic transmitral blood-flow velocity (E) and tissue Doppler myocardial wall velocity during early relaxation (E′) were acquired using a standard echo device; and E/E′ was derived post hoc. NICHE measurements included E, E′, and directly measured instantaneous E/E′. NICHE was successfully used in 28 participants. Measurements of ENICHE ranged from 40 cm/s to over 120 cm/s and correlated well with Eecho (R = 0.93). ranged from 2 to 23 cm/s and correlated well with the averaged (R = 0.91). Directly measured E/ ratios ranged from 3 to 23 and correlated well with derived E/ (R = 0.91). The NICHE device can monitor patients in a hands-free manner and can supply real-time Doppler derived measurements of hemodynamic parameters and diastolic function that correlate well with measurements from standard echo devices.
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September 2017
Research-Article
Continuous, Real-Time, Noninvasive Hemodynamic Cardiac Doppler Monitoring With a Novel Hands-Free Device: A Feasibility Study Compared to Standard Echo
Gilead I. Lancaster,
Gilead I. Lancaster
Department of Medicine (Cardiology),
Bridgeport Hospital/Yale
University School of Medicine,
Bridgeport, CT 06610;
Bridgeport Hospital/Yale
University School of Medicine,
Bridgeport, CT 06610;
Department of Echocardiography,
Joel E. Smilow Heart Institute at
Bridgeport Hospital,
267 Grant Street,
Bridgeport, CT 06610
e-mail: Gilead.Lancaster@ynhh.org
Joel E. Smilow Heart Institute at
Bridgeport Hospital,
267 Grant Street,
Bridgeport, CT 06610
e-mail: Gilead.Lancaster@ynhh.org
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Ilan Hay,
Ilan Hay
Cardiac Rehabilitation Institute,
Sheba Medical Center,
Tel Hashomer,
Ramat-Gan, Israel
Sheba Medical Center,
Tel Hashomer,
Ramat-Gan, Israel
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Michael Eldar
Michael Eldar
Leviev Heart Center,
Sheba Medical Center,
Tel Hashomer,
Ramat-Gan, Israel
Sheba Medical Center,
Tel Hashomer,
Ramat-Gan, Israel
Search for other works by this author on:
Gilead I. Lancaster
Department of Medicine (Cardiology),
Bridgeport Hospital/Yale
University School of Medicine,
Bridgeport, CT 06610;
Bridgeport Hospital/Yale
University School of Medicine,
Bridgeport, CT 06610;
Department of Echocardiography,
Joel E. Smilow Heart Institute at
Bridgeport Hospital,
267 Grant Street,
Bridgeport, CT 06610
e-mail: Gilead.Lancaster@ynhh.org
Joel E. Smilow Heart Institute at
Bridgeport Hospital,
267 Grant Street,
Bridgeport, CT 06610
e-mail: Gilead.Lancaster@ynhh.org
Ilan Hay
Cardiac Rehabilitation Institute,
Sheba Medical Center,
Tel Hashomer,
Ramat-Gan, Israel
Sheba Medical Center,
Tel Hashomer,
Ramat-Gan, Israel
Michael Eldar
Leviev Heart Center,
Sheba Medical Center,
Tel Hashomer,
Ramat-Gan, Israel
Sheba Medical Center,
Tel Hashomer,
Ramat-Gan, Israel
1Corresponding author.
Manuscript received October 7, 2015; final manuscript received December 27, 2016; published online June 27, 2017. Assoc. Editor: John LaDisa.
J. Med. Devices. Sep 2017, 11(3): 031001 (6 pages)
Published Online: June 27, 2017
Article history
Received:
October 7, 2015
Revised:
December 27, 2016
Citation
Lancaster, G. I., Hay, I., and Eldar, M. (June 27, 2017). "Continuous, Real-Time, Noninvasive Hemodynamic Cardiac Doppler Monitoring With a Novel Hands-Free Device: A Feasibility Study Compared to Standard Echo." ASME. J. Med. Devices. September 2017; 11(3): 031001. https://doi.org/10.1115/1.4036024
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