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Related Concept Videos

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...
Sites for measuring blood pressure01:21

Sites for measuring blood pressure

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
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.
Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Assessment of blood pressure in brachial artery(one-step method)01:15

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

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

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

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: May 25, 2026

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
14:28

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care

Published on: May 10, 2024

Flexible sensor for blood pressure measurement.

A T Sepúlveda1, A J Pontes, J C Viana

  • 1Institute for Polymers and Nanocomposites/I3N, University of Minho, 4800-058 Guimarães, Portugal. xanasepulveda@dep.uminho.pt

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|January 19, 2012
PubMed
Summary

A novel flexible blood pressure sensor using carbon nanotubes (CNTs) and polydimethylsiloxane (PDMS) offers a new way to monitor aneurysms after endovascular repair. This technology enables precise internal pressure measurements for enhanced patient surveillance.

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Last Updated: May 25, 2026

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Nanotechnology

Background:

  • Endovascular Aneurysm Repair (EVAR) requires effective surveillance methods.
  • Accurate measurement of pressure within aneurysm sacs is crucial for post-EVAR monitoring.
  • Existing flexible pressure sensors face challenges in biocompatibility and integration.

Purpose of the Study:

  • To introduce a new design and fabrication method for a highly flexible blood pressure sensor.
  • To enable precise measurement of internal pressure within an aneurysm sac for post-EVAR surveillance.
  • To utilize biocompatible polydimethylsiloxane (PDMS) membranes with embedded aligned carbon nanotubes (CNTs).

Main Methods:

  • Fabrication of a pressure-sensitive capacitor and an inductor using PDMS membranes with aligned CNTs.
  • Integration of conductive elements for telemetry.
  • Utilizing inductive coupling to measure internal capacitive variations.
  • Testing and validation of fabricated sensor prototypes.

Main Results:

  • Demonstrated the feasibility of using CNTs/PDMS technology for flexible pressure sensing.
  • Successfully fabricated and validated test sensors.
  • The sensor design allows for measurement of internal capacitive variations via inductive coupling.

Conclusions:

  • The proposed CNTs/PDMS technology is suitable for creating highly flexible pressure sensors.
  • This approach provides a promising solution for post-EVAR aneurysm surveillance.
  • The developed sensor technology can accurately measure pressure within aneurysm sacs.