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Related Concept Videos

Special considerations while measuring pulse01:13

Special considerations while measuring pulse

Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a stethoscope.
Pulse rhythm01:30

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 muscle...
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...
Pulse01:16

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 indicator...

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Related Experiment Video

Updated: Jun 18, 2026

Software for Analysis of Heart Rate and Blood Pressure Time-series Data from the Valsalva Maneuver
14:28

Software for Analysis of Heart Rate and Blood Pressure Time-series Data from the Valsalva Maneuver

Published on: June 27, 2025

Pulse transit time-based blood pressure estimation using hilbert-huang transform.

Qiao Zhang1, Yang Shi, Daniel Teng

  • 1Division of Biomedical Engineering, University of Saskatchewan, Saskatoon, SK, Canada S7N 5A 9.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|December 8, 2009
PubMed
Summary

This study enhances blood pressure estimation using pulse transit time (PTT) derived from ECG and PPG signals. The Hilbert-Huang Transform (HHT) improves PTT accuracy for non-invasive blood pressure monitoring.

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14:28

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Published on: September 1, 2014

Area of Science:

  • Biomedical Engineering
  • Signal Processing
  • Cardiovascular Monitoring

Background:

  • Continuous, cuffless, non-invasive blood pressure estimation is a significant clinical need.
  • Pulse transit time (PTT) is a promising physiological parameter for blood pressure monitoring.
  • Accurate PTT determination from electrocardiogram (ECG) and photoplethysmogram (PPG) signals is crucial.

Purpose of the Study:

  • To improve the accuracy of PTT estimation using advanced signal processing techniques.
  • To develop a more reliable method for continuous, cuffless, non-invasive blood pressure monitoring.
  • To validate the effectiveness of the proposed method through simulation.

Main Methods:

  • Application of the Hilbert-Huang Transform (HHT) for processing ECG and PPG signals.
  • Accurate determination of PTT from the processed ECG and PPG signals.
  • Utilizing a established formula to correlate estimated PTT with blood pressure variations.

Main Results:

  • The Hilbert-Huang Transform (HHT) significantly enhances the accuracy of PTT estimation.
  • Improved PTT accuracy leads to more precise blood pressure variation monitoring.
  • Simulation results demonstrate the effectiveness of the proposed HHT-based approach.

Conclusions:

  • The HHT-based method offers a robust and accurate approach for PTT estimation.
  • This technique advances continuous, cuffless, non-invasive blood pressure monitoring capabilities.
  • The proposed method holds potential for improved cardiovascular health management.