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Related Concept Videos

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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Special considerations while measuring pulse01:13

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Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
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Assessing Blood pressure using a doppler ultrasound01:19

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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.
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Resistivity01:22

Resistivity

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When a voltage is applied to a conductor, an electrical field is generated, and charges in the conductor feel the force due to the electrical field. The current density that results depends on the electrical field and the properties of the material. In some materials, including metals at a given temperature, the current density is approximately proportional to the electrical field. In these cases, the current density can be modeled as:
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Resistance and Conductance01:25

Resistance and Conductance

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A conductor's DC resistance at a given temperature is influenced by its resistivity, length, and cross-sectional area. Resistivity is an inherent property of the conductor material, with annealed copper serving as the international standard for measurement. For instance, the resistivity of hard-drawn aluminum at 20 degrees Celsius is 61% of the standard conductivity of annealed copper.
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Pulse01:16

Pulse

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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.
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Related Experiment Video

Updated: Apr 1, 2026

Evaluation of Commercial-Off-The-Shelf Wrist Wearables to Estimate Stress on Students
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Redefining Vascular Monitoring: A Wearable with Force Sensor Resistors for Real-Time Pulse Wave Velocity Assessment.

Alessandro Sanginario, Marco Pogliano, Irene Buraioli

    IEEE Transactions on Bio-Medical Engineering
    |March 30, 2026
    PubMed
    Summary

    A new wearable device using Force Sensing Resistor (FSR) technology accurately monitors Pulse Wave Velocity (PWV) for continuous cardiovascular health assessment. This innovation addresses the need for accessible, wearable technology in aging populations.

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    Area of Science:

    • Biomedical Engineering
    • Cardiovascular Health Technology
    • Wearable Health Monitoring

    Background:

    • Aging populations necessitate advanced health monitoring solutions, particularly for cardiovascular diseases, the leading global cause of mortality.
    • Continuous assessment of cardiovascular function is critical, with Pulse Wave Velocity (PWV) being a key indicator.
    • Current limitations in widespread PWV monitoring stem from the lack of comfortable, wearable devices for continuous use.

    Purpose of the Study:

    • To develop a highly wearable, continuous Pulse Wave Velocity (PWV) monitoring device.
    • To address the gap in accessible technology for long-term cardiovascular health assessment.

    Main Methods:

    • Development of a wearable device utilizing Force Sensing Resistor (FSR) technology.
    • Integration of a miniaturized Printed Circuit Board (PCB) with signal acquisition, conditioning, and Bluetooth Low Energy (BLE) for wireless data transmission.
    • Analysis of data by extracting the intersect tangent point (ITP) to estimate Pulse Transit Time (PTT) and calculate PWV.

    Main Results:

    • Validation on 101 participants showed strong correlation with the clinical gold standard (SphygmoCor).
    • The device achieved a mean error of 0.03 m/s and a standard deviation of 1.03 m/s compared to the gold standard.
    • Demonstrated reliability and accuracy of the wearable PWV monitoring system in a clinical setting.

    Conclusions:

    • The developed wearable FSR-based device offers a reliable and accurate method for continuous PWV monitoring.
    • This technology has the potential to significantly improve cardiovascular health assessment, especially in aging populations.
    • The findings support the clinical utility of this wearable solution for widespread adoption.