Download Ambulatory Impedance Cardiography: The Systems and their by Gerard Cybulski PDF

By Gerard Cybulski

ISBN-10: 3642119867

ISBN-13: 9783642119866

”Ambulatory Impedance Cardiography” supplies the reader the mandatory actual heritage of impedance cardiography (ICG) and presently on hand structures for hemodynamics holter tracking. It compares ambulatory ICG and different clinically approved equipment via an up-to-date cutting-edge. The booklet is split in four elements. within the first one, the significance of the research of the cardiac dynamics utilizing the ambulatory tracking procedure is gifted. the second one half includes the outline of foundations of ICG, the versions used to explain the ICG approach and the outline of obtainable platforms for ambulatory tracking of cardiac hemodynamics. The 3rd half is dedicated to the validation of the ambulatory ICG procedure, the verification of the standard of long-term ICG recordings and the dialogue of the constraints of this method. within the final half, a few medical and study functions of the ICG ambulatory tracking are presented.

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Extra info for Ambulatory Impedance Cardiography: The Systems and their Applications

Example text

17], Keim et al. [31] and Du Quesnay et al. [18]; 2. application of an ensemble averaging method to provide the ‘‘mean cycle’’ for the certain period [48, 58]; 3. digital filtering [51, 91]. Du Quesnay et al. [18] noted that temporary elimination of breathing affects SV despite the reduction of breathing modulation. g. exercise tests). Application of an ensemble averaging technique means that information regarding beatto-beat changes is lost. Thus filtering is the best method of reducing the interference of breathing modulation with the ICG signal.

The location of Q wave is not creating the significant error. But in case of ICG signal the ambiguous reading of the aortic valve opening might be a reason of substantial inaccuracy of PEP interval determination. When we assume roughly the range of PEP at the level 50–150 ms, the inaccuracy of 5 ms in the determination of that period creates a maximal error of 10% in one direction. However, 5 ms is not a maximal value of the inaccuracy in PEP determination. Ensemble averaging and/or large scale of the ensemble averaging are the methods leading to the PEP measurement improvement, minimizing the inaccuracy.

Biol. Eng. 4(3), 179–188 (1992) 36. : Comparative measures of systolic ejection during treadmill exercise by impedance cardiography and Doppler echocardiography. Biol. Psychol. 36(1–2), 51–61 (1993) References 35 37. : Impedance cardiography for estimating cardiac output during submaximal and maximal work. J. Appl. Physiol. 45(3), 459–462 (1978) 38. : Contributions to the impedance cardiogram waveform. Ann. Biomed. Eng. 14, 67–80 (1986) 39. : Development and evaluation of an impedance cardiac output system.

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Ambulatory Impedance Cardiography: The Systems and their Applications by Gerard Cybulski


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