نتایج جستجو برای: impedance cardiography

تعداد نتایج: 36187  

2006
Oscar Luis Paredes Junya Shite

everal studies suggest the importance of cardiac power output calculation, which is derived from cardiac output (CO) and mean blood pressure, to predict the prognosis in heart failure patients not only in hospital but also in the outpatient setting.1–3 CO measured by the thermodilution method with a Swan-Ganz catheter placed in the pulmonary artery has become one of the most widely accepted and...

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2003
Martin L. Dalton Joseph M. Van De Water Timothy W. Miller Robert L. Vogel

2003;123;2028-2033 Chest Mount and Martin L. Dalton Joseph M. Van De Water, Timothy W. Miller, Robert L. Vogel, Bruce E. Sign Technology? Impedance Cardiography: The Next Vital http://chestjournal.org/cgi/content/abstract/123/6/2028 and services can be found online on the World Wide Web at: The online version of this article, along with updated information ). ISSN: 0012-3692. http://www.chestjo...

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2013
Zhi Peng Li Li Juan Zhang Tao Su Chang Hong Liang

In this paper, a novel compact quadruplexer is implemented by using slotline stepped impedance stub loaded resonators (SISLRs) in ground plane. Four folded dual-mode slotline SISLRs with one input and four output coupled line structures are designed at different frequencies for the quadruplexer operation. By properly adjusting the geometrical parameters of a single dual-mode slotline SISLR, its...

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1990
Barry E. Hurwitz Liang-Yu Shyu Sridhar P. Reddy Neil Schneiderman Joachim H. Nagel

EKG synchronized ensemble averaging of the impedance cardiogram tends to blur or suppress signal events due to signal jitter or event latency variability. Although ensemble averaging provides some improvement in the stability of the signal and signal to noise ratio under conditions of nonperiodic influences of respiration and motion, coherent averaging techniques were developed to determine whe...

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2017
Pol Grasland-Mongrain Jean-Martial Mari Jean-Yves Chapelon Cyril Lafon

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ژورنال: مجله علوم پزشکی رازی 2015
آبداراصفهانی, مرتضی, ادریسی, مهدی, مهنام, امین, یزدانیان, حسن,

 Abstract Background: Impedance cardiography (ICG) is a simple and inexpensive technique for non-invasive and continues measurement of stroke volume. Due to non-invasive nature, ICG is becoming increasingly used in research and clinical applications. With regard to lack of domestic impedance cardiograph and limited similar imported products in the country, an inexpensive and portable protot...

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Journal: :Journal of applied physiology 1998
A Sherwood J McFetridge J S Hutcheson

A wearable, ambulatory impedance monitor (AIM) has been developed to permit impedance cardiographic measurements while patients and volunteers engage in normal daily activities. The AIM system was developed for use with a new hybrid tetrapolar spot-band electrode configuration and was designed to be comfortable and inconspicuous. The objective of the present study was to provide a preliminary e...

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2008
William R.B. Lionheart F. John Lidgey Christopher N. McLeod Kevin S. Paulson Michael K. Pidcock Yu Shi W.R.B. Lionheart F. J. Lidgey C. N. McLeod K. S. Paulson M. K. Pidcock Y. Shi

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Journal: :Journal of clinical microbiology 1978
P Cady S W Dufour J Shaw S J Kraeger

A conceptually simple and east-to-use technique is described that uses continuous impedance measurements for automated monitoring of microbial growth and metabolism. The method has been applied to a wide range of microorganisms. Optical clarity is not required. The sensitivity and reproducibility of the method are demonstrated. The mechanism whereby microbial growth alters the impedance of the ...

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2018
Marie-Georges Olivier Mireille Poelman

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