Cardiovascular Engineering: An International Journal

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A Computational Approach to Predict Pulse Transit Time Variations During Postural Change
Cardiovascular Engineering: An International Journal - Tập 7 - Trang 121-126 - 2007
Jong Yong Abdiel Foo
The human autonomic nervous system modulates blood pressure (BP) and heart rate in order to maintain homeostasis. Present techniques that monitor BP may cause discomforts to children. Pulse transit time change (ΔPTT) is known to be inversely correlated to BP change. In this study, a mathematical model using only a few empirical parameters and the measured lower limb vascular path length is introdu...... hiện toàn bộ
Biological Asymmetry and Cardiovascular Blood Transport
Cardiovascular Engineering: An International Journal - Tập 4 - Trang 209-218 - 2004
Thomas Kenner
Asymmetry is a very remarkable property of biological structures and functions. Most publications concerning asymmetry are related to brain function. However, as will be shown in this study, the asymmetry in the cardiovascular system plays an important role with respect to optimization of functions. Weibel (Cambridge, MA, 2000) has used the name “symmorphosis” to describe the ideal interrelation b...... hiện toàn bộ
Green Fluorescent Protein-Transgenic Rat as a Tool for Study of Transplantation and Regeneration in Myocardium
Cardiovascular Engineering: An International Journal - Tập 3 - Trang 63-69 - 2003
Masafumi Takahashi, Yoji Hakamata, Shin-ichi Takeda, Takashi Kaneko, Koichi Takeuchi, Ri-Ichi Takahashi, Masatsugu Ueda, Uichi Ikeda, Kazuyuki Shimada, Eiji Kobayashi
Cell transplantation and regeneration therapy are potentially new therapeutic approaches for cardiovascular disease. Transgenic (tg) animals for reporter genes would be useful to follow the cell lineage and differentiation during development and regeneration processes. In the present study, we developed green fluorescent protein (GFP)-tg rats and evaluated them as a tool for the study of cardiomyo...... hiện toàn bộ
Cardiovascular Simulation Toolbox
Cardiovascular Engineering: An International Journal - Tập 7 - Trang 81-88 - 2007
Liron Sheffer, William P. Santamore, Ofer Barnea
A toolbox for Matlab Simulink (trademark of Mathworks corp. etc.) was developed to simulate various models of flow in the cardiovascular system and study effects of different pathological conditions. The toolbox was based on well-known analog lumped models of blood flow in vessels, the varying elastance heart model, blood flow through vessels, shunts, and valves as well as models of oxygen exchang...... hiện toàn bộ
Pulse Wave Velocity and Digital Volume Pulse as Indirect Estimators of Blood Pressure: Pilot Study on Healthy Volunteers
Cardiovascular Engineering: An International Journal - Tập 9 Số 3 - Trang 104-112 - 2009
Juan Miguel Sabonge Padilla, Enrique Berjano, Javier Sáiz, R. López Rodríguez, Lorenzo Fácila
Optimizing Packed Red Blood Cell Transfusions: Viscosity, Volume, and Time
Cardiovascular Engineering: An International Journal - Tập 3 - Trang 117-121 - 2003
Glen M. Atlas
A straightforward formula, $${V=({\frac{{H_i\cdot b}}{2}-1})\,{\cdot\,V_{_i}}}$$ which minimizes the product of transfusion time and volume has been derived. V i represents the initial volume of the packed red blood cells (PRBCs) whereas H i represents their initial hematocrit. The coefficient b is bas...... hiện toàn bộ
How Much Lung Ventilation is Obtained with Only Chest-compression CPR?
Cardiovascular Engineering: An International Journal - Tập 8 - Trang 145-148 - 2008
L. A. Geddes, A. Rundell, M. Otlewski, M. Pargett
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 normal breathing and with rhythmic chest compression during ventricular fibrillation. The ratio of TV/DS was calculated in both cases. For normal breathing the ra...... hiện toàn bộ
Evaluation of a 2D Model of the Left Side of the Human Heart Against Magnetic Resonance Velocity Mapping
Cardiovascular Engineering: An International Journal - Tập 1 - Trang 59-76 - 2001
Jacob M. Jacobsen, Pernille T. Adeler, Won Y. Kim, Kim Houlind, Erik M. Pedersen, Jesper K. Larsen
The purpose of this study is to determine whether an existing 2D mathematical model of the heart developed by Peskin and Mcqueen can be modified, so it can simulate blood flow patterns in the left ventricle as measured by magnetic resonance (MR) phase contrast velocity mapping. The modifications comprise changing the geometry of the heart model of the plane section together with the tuning of para...... hiện toàn bộ
Commotio Cordis in Children, Including a Translation of the First Paper That Describes the Condition
Cardiovascular Engineering: An International Journal - Tập 3 - Trang 147-148 - 2003
R. A. Roeder, L. A. Geddes, E. Tkaczyk
A nonpenetrating blow to the chest may cause sudden death to children engaged in sports, such as baseball, hockey, etc. This condition is known as commotio cordis. The circulatory arrest associated with commotio cordis is due to atrioventricular block or ventricular fibrillation because the projectile struck the chest during the ventricular vulnerable period. Therefore, all medical personnel who e...... hiện toàn bộ
Iontophoresis: Modeling, Methodology, and Evaluation
Cardiovascular Engineering: An International Journal - Tập 1 - Trang 127-136 - 2001
Anthony F. Coston, John K.-J. Li
Iontophoresis is a noninvasive and painless means of delivering various drugs into the body. Many drugs, in particular peptides, proteins, and hormones are given parenterally either through intravenous, subcutaneous, or intramuscular injections. Transdermal delivery using iontophoresis circumvents hepatic clearance and breakdown by the gastric juices thus allowing local high concentrations of acti...... hiện toàn bộ
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