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Related Concept Videos

Pulse01:16

Pulse

2.2K
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...
2.2K
Pulse01:05

Pulse

4.2K
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...
4.2K
The Wave Nature of Light02:12

The Wave Nature of Light

61.6K
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
61.6K
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

1.8K
A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
1.8K
Pulse Oximetry01:24

Pulse Oximetry

1.4K
Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
1.4K
Regulation of Pulse01:20

Regulation of Pulse

2.3K
Pulse regulation involves physiological mechanisms that ensure adequate blood flow throughout the body. The heartbeat, regulated by the autonomic nervous system, is influenced by hormonal balance, physical activity, and emotional state.
2.3K

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Related Experiment Video

Updated: Feb 13, 2026

Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging
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Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging

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Pulse wave analysis reproducibility with the Complior Analyse device: a methodological study.

Telmo Pereira1, João Maldonado2

  • 1Department of Clinical Physiology, Polytechnic Institute of Coimbra, ESTeSC.

Blood Pressure Monitoring
|March 15, 2018
PubMed
Summary

The Complior Analyse device shows excellent reproducibility for assessing central arterial hemodynamics, including central systolic blood pressure and pulse pressure. This makes it suitable for clinical use in monitoring arterial pressure.

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Area of Science:

  • Cardiovascular Physiology
  • Medical Device Technology
  • Reproducibility Studies

Background:

  • Central arterial hemodynamics are crucial indicators of cardiovascular health.
  • Accurate and reproducible measurements are essential for effective clinical monitoring.
  • The Complior Analyse is a new device for assessing these parameters via carotid pulse wave analysis (PWA).

Purpose of the Study:

  • To evaluate the interobserver and intraobserver reproducibility of the Complior Analyse.
  • To assess the temporal variability of measurements obtained with the device.
  • To determine the reliability of central hemodynamic parameter assessment using carotid PWA.

Main Methods:

  • Eighty-seven participants underwent sequential carotid PWA measurements by two experienced operators.
  • A subset of 27 participants had repeat measurements after one month to assess temporal stability.
  • Data analysis focused on concordance, intraclass correlation coefficients (ICCs), and mean differences.

Main Results:

  • Excellent agreement was found for intraobserver, interobserver, and temporal PWA variability.
  • ICCs exceeded 0.9 for central systolic blood pressure, central pulse pressure, and augmentation index.
  • Small mean differences and narrow limits of agreement were observed for key hemodynamic parameters.

Conclusions:

  • The Complior Analyse demonstrates excellent reproducibility for central hemodynamic assessment.
  • The device is reliable when used under ideal conditions by experienced observers.
  • Findings support the integration of Complior Analyse into clinical follow-up programs for arterial pressure monitoring.