[A digital simulation study on the effect of change in cardiovascular system parameters on the pulse waveform of the

A Kong1, J Bai, B S Xi

  • 1Institute of Space Medico-Engineering, Beijing, China.

Insights

Changes in cardiovascular system parameters like heart rate and arterial compliance significantly alter the radial artery pressure pulse waveform. This simulation study reveals new phenomena and complex interactions between these physiological factors.

Area of Science:

  • Cardiovascular Physiology
  • Biomedical Engineering
  • Mathematical Modeling

Context:

  • The radial artery pressure pulse waveform reflects the complex dynamics of the cardiovascular system.
  • Understanding these dynamics is crucial for diagnosing and managing cardiovascular diseases.
  • Previous studies have linked cardiovascular parameters to waveform changes, but comprehensive simulation insights are limited.

Purpose:

  • To investigate the impact of key cardiovascular system parameters on the radial artery pressure pulse waveform using a mathematical model.
  • To identify how changes in heart rate, ventricular contractility, arterial compliance, peripheral resistance, and blood viscosity influence waveform characteristics.

Summary:

  • A validated mathematical model of the cardiovascular system was employed for simulation.
  • Simulations demonstrated that alterations in individual parameters distinctly affect the pulse waveform.
  • Observed waveform changes largely align with clinical findings, yet novel phenomena and parameter interdependencies were identified.

Impact:

  • The study highlights the intricate relationships between cardiovascular parameters and the radial pulse waveform.
  • The developed model serves as a valuable tool for exploring cardiovascular physiology and predicting waveform alterations.
  • Findings may contribute to improved non-invasive diagnostic techniques and a deeper understanding of cardiovascular mechanics.
Abstract

Related Concept Videos

Assessment of radial pulse01:11

Assessment of radial pulse

Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
Pulse01:16

Pulse

When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical indicator...
Pulse01:05

Pulse

The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls between...
Assessment of apical radial pulse01:25

Assessment of apical radial pulse

Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
Assessment of the Cardiovascular System III: Palpation01:27

Assessment of the Cardiovascular System III: Palpation

Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...