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Related Concept Videos

Measurement of Blood Pressure01:17

Measurement of Blood Pressure

2.5K
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...
2.5K
Assessment of blood pressure in brachial artery(two-step method)01:23

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

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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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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
3.2K
Assessment of blood pressure in brachial artery(one-step method)01:15

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

1.0K
This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
Prepare for the Procedure:
1.0K
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

2.9K
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...
2.9K
Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

1.1K
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.
1.1K

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Related Experiment Video

Updated: Jan 6, 2026

Measuring the Carotid to Femoral Pulse Wave Velocity Cf-PWV to Evaluate Arterial Stiffness
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Measuring Blood Pressure: from Cuff to Smartphone.

Andrew Barszczyk1, Kang Lee2

  • 1Department of Physiology, University of Toronto, Toronto, Ontario, Canada.

Current Hypertension Reports
|October 11, 2019
PubMed
Summary

Contactless smartphone technology shows promise for measuring blood pressure, offering a convenient alternative to traditional cuff methods. Further research is needed to improve accuracy and robustness for widespread clinical adoption.

Keywords:
Blood pressureBlood pressure cuffHypertensionMedicine and smartphoneNew technologySelfieSmartphone

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Area of Science:

  • Biomedical Engineering
  • Medical Technology
  • Health Informatics

Background:

  • Traditional blood pressure measurement using inflatable cuffs presents challenges including inconvenience and discomfort.
  • The need for specialized equipment limits accessibility and frequent monitoring.
  • Ubiquitous smartphone technology offers a potential solution for accessible, contactless blood pressure assessment.

Purpose of the Study:

  • To explore the feasibility of contactless blood pressure measurement using smartphone technology.
  • To evaluate the accuracy of smartphone-based blood pressure measurement against traditional methods.
  • To identify areas for improvement in contactless blood pressure monitoring systems.

Main Methods:

  • Utilizing video recordings of the face to derive blood pressure readings.
  • Conducting proof-of-concept studies with normotensive participants.
  • Comparing measurements from contactless technology with automated blood pressure monitors.

Main Results:

  • Demonstrated comparable accuracy to traditional automated blood pressure monitors in a proof-of-concept study.
  • Identified challenges such as variations in skin tone and lighting conditions.
  • Highlighted the need for enhanced predictive features to improve accuracy.

Conclusions:

  • Contactless smartphone-based blood pressure measurement is a promising technology.
  • Further development is required to address accuracy and robustness for clinical use.
  • This technology has the potential to increase the frequency and accessibility of blood pressure monitoring.