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Related Concept Videos

Measurement of Blood Pressure01:17

Measurement of Blood Pressure

2.1K
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...
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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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Sites for measruring blood pressure01:21

Sites for measruring blood pressure

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Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
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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:
2.0K
Assessment of blood pressure in brachial artery(one-step method)01:15

Assessment of blood pressure in brachial artery(one-step method)

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This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
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Assessment of blood pressure in brachial artery(two-step method)01:23

Assessment of blood pressure in brachial artery(two-step method)

1.2K
Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
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Related Experiment Video

Updated: Nov 18, 2025

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
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Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge

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Surrogate based continuous noninvasive blood pressure measurement.

Alexandru-Gabriel Pielmus1, Jens Mühlstef2, Erik Bresch2

  • 1Electronics and Medical Signal Processing, Technical University of Berlin, Berlin, Germany.

Biomedizinische Technik. Biomedical Engineering
|February 10, 2021
PubMed
Summary

Continuous cuffless blood pressure monitoring is an unmet clinical need. This paper reviews surrogate-based techniques for noninvasive blood pressure estimation, discussing clinical needs and technical challenges.

Keywords:
NIBPclinicalexpertguidelinerecommendationworkshop

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Physiology
  • Medical Instrumentation

Background:

  • Arterial blood pressure (ABP) is a critical vital sign, but current noninvasive measurement methods using cuffs are often uncomfortable, intermittent, or bulky.
  • Existing cuff-based devices have limitations, creating a demand for continuous, cuffless ABP monitoring solutions.
  • Continuous cuffless ABP measurement remains a significant unmet clinical need, driving ongoing research and development.

Purpose of the Study:

  • To review and discuss surrogate-based noninvasive blood pressure (BP) measurement techniques.
  • To explore methods for continuously inferring BP from surrogate signals without arterial occlusion.
  • To provide an application-driven outlook on the clinical needs, technical aspects, and future directions for cuffless BP monitoring.

Main Methods:

  • Discussion of surrogate-based noninvasive BP measurement techniques, including pulse transit time, pulse arrival time, and pulse wave analysis.
  • Analysis of signal features (surrogates) that are modulated by BP variations for BP estimation.
  • Summary of findings from an expert workshop covering clinical, engineering, commercialization, and standardization aspects.

Main Results:

  • Surrogate-based methods offer continuous, noninvasive BP estimation without cuff-based occlusion.
  • Techniques like pulse transit time and pulse wave analysis are promising but face technical limitations and regulatory hurdles.
  • Expert consensus highlights the need for standardized frameworks and further research to enable widespread clinical adoption.

Conclusions:

  • Continuous cuffless ABP monitoring is a crucial area for research and development.
  • Addressing technical limitations and establishing regulatory standards are key to realizing the potential of surrogate-based BP measurement.
  • Further research and development are recommended to overcome current challenges and facilitate clinical implementation.