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Pulse

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...

Equipments Used To Measure Blood Pressure

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...

Assessment of apical radial pulse

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 radial pulse

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:

Pulse rhythm

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...

Special considerations while measuring pulse

Special considerations while measuring pulse

Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:

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Related Experiment Video

Updated: Jun 3, 2025

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Published on: February 14, 2017

Non-Contact Stable Arterial Pulse Measurement Using mmWave Array Radar.

Fanglin Geng^1,2, Zhongrui Bai^1,3, Hao Zhang^1,2

¹Aerospace Information Research Institute, Chinese Academy of Sciences (AIRCAS), Beijing 100094, China.

Bioengineering (Basel, Switzerland)

|January 8, 2025

Summary

This summary is machine-generated.

This study introduces a radar method for stable arterial pulse measurement. The non-contact technique ensures consistent pulse morphology over time, crucial for cardiovascular monitoring.

Keywords:

large-array millimeter-wave radar multiple site arteries non-contact pulse wave measurement target localization and focusing

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Last Updated: Jun 3, 2025

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

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Published on: February 14, 2017

Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging

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Area of Science:

Biomedical Engineering
Cardiovascular Monitoring
Radar Signal Processing

Background:

Arterial pulse signals are vital for assessing cardiovascular health.
Radar-based pulse detection faces challenges with signal stability and morphology consistency over time.

Purpose of the Study:

To develop a non-contact arterial pulse measurement method using mmWave radar.
To achieve stable pulse signal morphology across varying measurement periods.
To provide a quantitative assessment of radar-based pulse measurement reliability.

Main Methods:

Utilized mmWave radar for non-contact pulse signal acquisition.
Implemented a range-angle focusing algorithm to enhance signal stability.
Conducted experiments with six subjects under different measurement times.

Main Results:

Achieved high consistency in pulse morphology (correlation > 0.84) for the same body part across different measurement times.
Demonstrated stability in four key pulse signs.
Analyzed the impact of radar array size and measurement distance on signal quality.

Conclusions:

The developed mmWave radar method provides a stable and consistent non-contact approach for arterial pulse measurement.
This technique offers a reliable framework for long-term cardiovascular monitoring using radar technology.
Findings offer guidance on array selection for diverse research applications.