Publications related to Preload (cardiology)

Arterial pressure transfer characteristics: effects of travel time

We investigated the quantitative contribution of all local conduit arterial, blood, and distal load properties to the pressure transfer function from brachial artery to aorta. The model was based on anatomical data, Young's modulus, wall viscosity, blood v ...

2006

Noninvasive Doppler-derived myocardial performance index in rats with myocardial infarction: validation and correlation by conductance catheter

Nikolaos Stergiopoulos, David Jegger, Patrick Segers

The rodent model of myocardial infarction (MI) is extensively used in heart failure studies. However, long-term follow-up of echocardiographic left ventricular (LV) function parameters such as the myocardial performance index (MPI) and its ratio with the f ...

2005

Predicting systolic and diastolic aortic blood pressure and stroke volume in the intact sheep

Nikolaos Stergiopoulos, Patrick Segers, Nico Westerhof

We developed a mathematical model describing the interaction between the heart and the arterial system. The model was constructed and tested on basis of invasive hemodynamic data in six sheep. Data from a first group of three animals (49 cardiac cycles) we ...

2001

Left ventricular wall stress normalization in chronic pressure-overloaded heart: a mathematical model study

Nikolaos Stergiopoulos, Patrick Segers, Nico Westerhof

It is generally accepted that the left ventricle (LV) hypertrophies (LVH) to normalize systolic wall stress (sigma(s)) in chronic pressure overload. However, LV filling pressure (P(v)) may be elevated as well, supporting the alternative hypothesis of end-d ...

2000

Use of pulse pressure method for estimating total arterial compliance in vivo

Nikolaos Stergiopoulos, Patrick Segers, Nico Westerhof

We determined total arterial compliance from pressure and flow in the ascending aorta of seven anesthetized dogs using the pulse pressure method (PPM) and the decay time method (DTM). Compliance was determined under control and during occlusion of the aort ...

1999

Role of total arterial compliance and peripheral resistance in the determination of systolic and diastolic aortic pressure

Nikolaos Stergiopoulos, Nico Westerhof

The goal of the study was to define the major arterial parameters that determine aortic systolic (Ps) and diastolic (Pd) pressure in the dog. Measured aortic flows were used as input to the two-element windkessel model of the arterial system, with peripher ...

1999

Determinants of pulse pressure

Nikolaos Stergiopoulos, Nico Westerhof

We have searched to define the major arterial parameters that determine aortic systolic (Ps) and diastolic (Pd) pressure in the dog. Measured aortic flows were used as input to the 2-element windkessel model of the arterial system, with peripheral resistan ...

1998

Physical basis of pressure transfer from periphery to aorta: a model-based study

Nikolaos Stergiopoulos, Nico Westerhof

We propose a new method to derive aortic pressure from peripheral pressure and velocity by using a time domain approach. Peripheral pressure is separated into its forward and backward components, and these components are then shifted with a delay time, whi ...

1998

Determinants of stroke volume and systolic and diastolic aortic pressure

Nikolaos Stergiopoulos, Jean-Jacques Meister, Nico Westerhof

We investigated how parameters describing the heart and the arterial system contribute to the systolic and diastolic pressures (Ps and Pd, respectively) and stroke volume (SV). We have described the heart by the varying-elastance model with six parameters ...

American Physiological Society1996

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Preload (cardiology)

Arterial pressure transfer characteristics: effects of travel time

Noninvasive Doppler-derived myocardial performance index in rats with myocardial infarction: validation and correlation by conductance catheter

Predicting systolic and diastolic aortic blood pressure and stroke volume in the intact sheep

Left ventricular wall stress normalization in chronic pressure-overloaded heart: a mathematical model study

Use of pulse pressure method for estimating total arterial compliance in vivo

Role of total arterial compliance and peripheral resistance in the determination of systolic and diastolic aortic pressure

Determinants of pulse pressure

Physical basis of pressure transfer from periphery to aorta: a model-based study

Determinants of stroke volume and systolic and diastolic aortic pressure

Tissue-type plasminogen activator antigen and plasminogen activator inhibitor in diabetes mellitus

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Chat with Graph Search

Role of total arterial compliance and peripheral resistance in the determination of systolic and diastolic aortic pressure

Tissue-type plasminogen activator antigen and plasminogen activator inhibitor in diabetes mellitus

Noninvasive Doppler-derived myocardial performance index in rats with myocardial infarction: validation and correlation by conductance catheter

Determinants of stroke volume and systolic and diastolic aortic pressure

Arterial pressure transfer characteristics: effects of travel time

Left ventricular wall stress normalization in chronic pressure-overloaded heart: a mathematical model study

Physical basis of pressure transfer from periphery to aorta: a model-based study

Predicting systolic and diastolic aortic blood pressure and stroke volume in the intact sheep

Use of pulse pressure method for estimating total arterial compliance in vivo

Determinants of pulse pressure