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Related Concept Videos

Assessing Blood pressure using a doppler ultrasound01:19

Assessing Blood pressure using a doppler ultrasound

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:
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...

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Related Experiment Video

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Wireless Telemetry Device Implantation in a Fontan Ovine Model for Continuous and Long-Term Hemodynamic Monitoring
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A wireless ballistocardiographic chair.

Sakari Junnila1, Alireza Akhbardeh, Laurentiu C Barna

  • 1Inst. of Signal Process., Tampere Univ. of Technol., Tampere, Finland. sakari-junnila@tut.fi

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|October 20, 2007
PubMed
Summary

This study introduces a wireless ballistocardiographic (BCG) chair for health monitoring. It enables BCG signal measurement using EMFi sensors and compares methods for extracting cardiac cycles, with and without an electrocardiogram (ECG) reference.

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Area of Science:

  • Biomedical Engineering
  • Signal Processing
  • Wearable Technology

Background:

  • Proactive health monitoring systems require non-invasive physiological measurement tools.
  • Ballistocardiography (BCG) offers a method to assess cardiovascular function through subtle body movements.
  • Existing BCG systems often require cumbersome setups or reference signals for accurate analysis.

Purpose of the Study:

  • To develop and evaluate a wireless ballistocardiographic chair for continuous health monitoring.
  • To integrate Electrodermal Film (EMFi) sensors for BCG signal acquisition.
  • To compare different methods for extracting BCG cardiac cycles, including those independent of an ECG reference.

Main Methods:

  • Development of a wireless chair equipped with EMFi sensors on the seat and backrest.
  • Utilisation of an IEEE 802.15.4 RF link for data transmission to a PC.
  • Acquisition of BCG signals and a reference ECG signal from the armrests.
  • Implementation and comparison of two novel algorithms for BCG cycle extraction without ECG synchronization.

Main Results:

  • The wireless BCG chair successfully acquired BCG signals from the seat and backrest.
  • A rough ECG signal was obtained from the armrests, useful for synchronisation.
  • Two distinct methods for extracting BCG cycles without ECG reference were developed and evaluated.
  • Performance comparison of the developed BCG cycle extraction methods was conducted.

Conclusions:

  • The wireless ballistocardiographic chair is a viable platform for proactive health monitoring.
  • The developed methods offer potential for BCG analysis without requiring a simultaneous ECG signal.
  • Further research can refine these methods for enhanced cardiovascular assessment.