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Advanced Search Results For "impedance"

1 - 10 of 116,947 results for
 "impedance"
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Data-driven approach for automatic detection of aortic valve opening: B point detection from impedance cardiogram.

Publication Type: Academic Journal

Source(s): Psychophysiology [Psychophysiology] 2022 Dec; Vol. 59 (12), pp. e14128. Date of Electronic Publication: 2022 Jun 19.

Abstract: Pre-ejection period (PEP), an indicator of sympathetic nervous system activity, is useful in psychophysiology and cardiovascular studies. Accurate PEP measurement is challenging and relies on robust identification of the timing of aortic valve opening,...

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A Systematic Review of the Transthoracic Impedance during Cardiac Defibrillation.

Publication Type: Academic Journal

Source(s): Sensors (Basel, Switzerland) [Sensors (Basel)] 2022 Apr 06; Vol. 22 (7). Date of Electronic Publication: 2022 Apr 06.

Abstract: For cardiac defibrillator testing and design purposes, the range and limits of the human TTI is of high interest. Potential influencing factors regarding the electronic configurations, the electrode/tissue interface and patient characteristics were ide...

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ReBeatICG: Real-time Low-Complexity Beat-to-beat Impedance Cardiogram Delineation Algorithm.

Publication Type: Academic Journal

Source(s): Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference [Annu Int Conf IEEE Eng Med Biol Soc] 2021 Nov; Vol. 2021, pp. 5618-5624.

Abstract: This work presents ReBeatICG, a real-time, low-complexity beat-to-beat impedance cardiography (ICG) delineation algorithm that allows hemodynamic parameters monitoring. The proposed procedure relies only on the ICG signal compared to most algorithms fo...

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Study of Electrode Locations for Joint Acquisition of Impedance- and Electro-cardiography Signals.

Publication Type: Academic Journal

Source(s): Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference [Annu Int Conf IEEE Eng Med Biol Soc] 2021 Nov; Vol. 2021, pp. 7264.

Abstract: ICG (impedance cardiography) and ECG (electrocardiography) provide important indications about functioning of the heart and of overall cardiovascular system. Measuring ICG along with ECG using wearable devices will improve the quality of health monitor...

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Fast Sub-Hz potentiostatic/galvanostatic bio-impedance measurements using chaotic oscillators.

Publication Type: Academic Journal

Source(s): Biomedical microdevices [Biomed Microdevices] 2022 Nov 09; Vol. 24 (4), pp. 39. Date of Electronic Publication: 2022 Nov 09.

Abstract: The measurement of bio-impedance spectra at ultra low frequencies (sub-Hz) is known to require a considerably long time with the classical frequency-sweep method or other narrow-band periodic excitation signals. In this work, an impedance measurement t...

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Response Characteristics of Contactless Impedance Detection (CID) Sensor on Slug Flow in Small Channels: The Investigation on Slug Separation Distance.

Publication Type: Academic Journal

Source(s): Sensors (Basel, Switzerland) [Sensors (Basel)] 2022 Nov 20; Vol. 22 (22). Date of Electronic Publication: 2022 Nov 20.

Authors:

Abstract: In recent years, CID sensors have displayed great development potential in parameter measurement of gas-liquid two-phase flow in small channels. However, the fundamental/mechanism research on the response characteristics of CID sensors is relatively in...

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Wideband absorbance for the assessment of pressure equalizing tubes patency in children.

Publication Type: Academic Journal

Source(s): International journal of pediatric otorhinolaryngology [Int J Pediatr Otorhinolaryngol] 2022 Nov; Vol. 162, pp. 111309. Date of Electronic Publication: 2022 Sep 06.

Abstract: Objectives: To analyze the feasibility of using wideband absorbance to verify the patency of pressure equalizing tubes (PETs) in clinical practice and to present the response pattern of this measure for ears with patent PET.Methods: This observational ...

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Integrating electrical impedance tomography and transpulmonary pressure monitoring to personalize PEEP in hypoxemic patients undergoing pressure support ventilation.

Publication Type: Academic Journal

Source(s): Critical care (London, England) [Crit Care] 2022 Oct 18; Vol. 26 (1), pp. 314. Date of Electronic Publication: 2022 Oct 18.

Abstract: Monitoring with electrical impedance tomography (EIT) during a decremental PEEP trial has been used to identify the PEEP that yields the optimal balance of pulmonary overdistension and collapse. This method is based on pixel-level changes in respirator...

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GRU Neural Network Improved Bioimpedance Based Stroke Volume Estimation during Ergometry Stress Test.

Publication Type: Academic Journal

Source(s): Sensors (Basel, Switzerland) [Sensors (Basel)] 2022 Oct 17; Vol. 22 (20). Date of Electronic Publication: 2022 Oct 17.

Abstract: Cardiovascular diseases (CVDs) are one of the leading members of non-communicable diseases. An early diagnosis is essential for effective treatment, to reduce hospitalization time and health care costs. Nowadays, an exercise stress test on an ergometer...

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The influence of otitis media with effusion on middle-ear impedance estimated from wideband acoustic immittance measurements.

Publication Type: Academic Journal

Source(s): The Journal of the Acoustical Society of America [J Acoust Soc Am] 2021 Aug; Vol. 150 (2), pp. 969.

Abstract: The goal of this work was to estimate the middle-ear input impedance ( Z me ) from wideband acoustic immittance (WAI) measures and determine whether Z me improves the clinical utility of WAI. The data used in this study were from a previously reported ...

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