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Development and application of a logistic-based systolic model for hemodynamic measurements using the esophageal Doppler monitor [0.03%]
Glen M Atlas Glen M Atlas
The esophageal Doppler monitor (EDM) is a clinically useful device for minimally invasive assessment of cardiac output, preload, afterload, and contractility. An empirical model, based upon the logistic function, has been developed. Use of ...
L A Geddes,A Rundell,M Otlewski et al. L A Geddes et al.
The objective of this 14-pig study was designed to determine the amount of lung ventilation obtainable by only rhythmic chest compression (100/min, 100 lbs). Tidal volume (TV), dead space (DS), and respiration rate (R) were measured with no...
Sergey Podtaev,Matvey Morozov,Peter Frick Sergey Podtaev
The wavelet transform-based correlation analysis has been used to study skin temperature fluctuations caused by periodic changes in blood flow resulting from oscillations in vasomotor smooth muscle tone. We considered two cases, one in whic...
Effects of muscle pump on rotary blood pumps in dynamic exercise: a computer simulation study [0.03%]
Yi Wu,Scott Lim Yi Wu
Computer simulation is an important tool to study the interaction between rotary blood pumps (RBPs) and human circulatory system. This interaction is critical for the development of reliable physiological control systems of long-term RBPs. ...
A mechanical model of the human heart relating septal function to myocardial work and energy [0.03%]
C Luo,D L Ware,J B Zwischenberger et al. C Luo et al.
A thorough understanding of ventricular interaction and the effects of septal function on right and left ventricular performance in the human heart requires measurement of interventricular pressure gradients using high fidelity pressure tra...
K R Fowler,G A Gray,M S Olufsen K R Fowler
In part I of this study we introduced a 17-parameter model that can predict heart rate regulation during postural change from sitting to standing. In this subsequent study, we focus on the 17 model parameters needed to adequately represent ...
Madalena D Costa,Chung-Kang Peng,Ary L Goldberger Madalena D Costa
Cardiovascular signals are largely analyzed using traditional time and frequency domain measures. However, such measures fail to account for important properties related to multiscale organization and non-equilibrium dynamics. The complemen...
Statistical considerations and techniques for understanding physiological data, modeling, and treatments [0.03%]
Ben G Fitzpatrick Ben G Fitzpatrick
Comparing models with data always forces us to deal with uncertainty. This uncertainty may take many different forms and involve multiple scales of resolution in the model and in the experiment. In this paper, we discuss issues surrounding ...
Sensitivity analysis and model assessment: mathematical models for arterial blood flow and blood pressure [0.03%]
Laura M Ellwein,Hien T Tran,Cheryl Zapata et al. Laura M Ellwein et al.
The complexity of mathematical models describing the cardiovascular system has grown in recent years to more accurately account for physiological dynamics. To aid in model validation and design, classical deterministic sensitivity analysis ...
Dalibor Herman,Svetlana Prevorovská,Frantisek Marsík Dalibor Herman
This research is aimed to the determination of the changes in the cardiac energetic output for three different modes of cardiac rhythm pacing. The clinical investigation of thirteen patients with the permanent dual-chamber pacemaker implant...