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Related Concept Videos

Assessing Blood pressure using a doppler ultrasound01:19

Assessing Blood pressure using a doppler ultrasound

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To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
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Pulse rhythm01:30

Pulse rhythm

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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...
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Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

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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...
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Pulse Oximetry01:24

Pulse Oximetry

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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...
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Pulse Assessment Sites01:11

Pulse Assessment Sites

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Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
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Assessment of apical radial pulse01:25

Assessment of apical radial pulse

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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.
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Updated: Sep 8, 2025

Author Spotlight: Assessing the Cardiovascular Profile of Patients with Metabolic Syndrome
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Tactile-Transparent Wearable Sensor for Clinician-Friendly Pulse Wave Velocity Monitoring and Cardiovascular Risk

Senlin Hou1, Xiaotong Chen2, Dani S Assi3

  • 1Department of Mechanical Engineering, City University of Hong Kong, Kowloon 000000, Hong Kong.

ACS Nano
|September 5, 2025
PubMed
Summary
This summary is machine-generated.

A new tactile-transparent wearable sensor accurately measures arterial stiffness, a key cardiovascular disease risk factor. This innovation enables accessible, point-of-care monitoring for preventive cardiology.

Keywords:
arterial stiffeninggraphene oxidepulse wave velocitytactile transparentwearable sensors

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Research
  • Wearable Technology

Background:

  • Arterial stiffening is a significant independent risk factor for cardiovascular diseases.
  • Current methods for assessing arterial stiffness, like pulse wave velocity (PWV), require complex equipment and trained personnel, limiting widespread clinical use.
  • There is a need for accessible, point-of-care solutions for monitoring arterial stiffness.

Purpose of the Study:

  • To develop and validate a novel tactile-transparent wearable (TTW) sensor for quantitative arterial stiffness assessment.
  • To evaluate the TTW sensor's performance against established methods like Doppler ultrasound.
  • To explore the potential of the TTW sensor for dynamic vascular risk assessment and widespread adoption.

Main Methods:

  • Development of a TTW sensor integrating flexible Polydimethylsiloxane (PDMS) electrodes and graphene oxide dielectric films.
  • Clinical validation study involving 20 healthy volunteers (aged 22-60 years).
  • Comparison of TTW sensor measurements with Doppler ultrasound for carotid-radial PWV and analysis of arterial stiffness correlations with age and BMI.

Main Results:

  • The TTW sensor demonstrated strong agreement with Doppler ultrasound for carotid-radial PWV (Pearson's r = 0.88).
  • Arterial stiffness was found to be significantly correlated with age and BMI (p < 0.001).
  • The sensor provided high-fidelity waveform analysis, yielding dynamic vascular risk indices like augmentation index and reflection index.

Conclusions:

  • The developed TTW sensor offers a promising, accessible method for arterial stiffness assessment.
  • This technology has the potential to democratize cardiovascular risk monitoring, particularly in resource-limited settings.
  • The TTW sensor supports preventive cardiology through enhanced, real-time vascular risk evaluation.