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Related Concept Videos

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

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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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Equipments Used To Measure Blood Pressure01:30

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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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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.
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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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Related Experiment Video

Updated: Apr 25, 2026

Measuring the Carotid to Femoral Pulse Wave Velocity Cf-PWV to Evaluate Arterial Stiffness
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Pulse wave analysis with two tonometric devices: a comparison study.

D Agnoletti1, S C Millasseau, J Topouchian

  • 1Paris Descartes University, AP-HP, Diagnosis and Therapeutic Center, Hôtel-Dieu, Paris, France. Department of Internal Medicine, University of Bologna, Bologna, Italy.

Physiological Measurement
|August 27, 2014
PubMed
Summary
This summary is machine-generated.

Commercial pulse wave analysis devices SphygmoCor and PulsePen show differences in radial and carotid waveform measurements. These discrepancies, particularly in radial parameters, indicate the devices are not interchangeable for hemodynamic assessment.

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Area of Science:

  • Cardiovascular Physiology
  • Biomedical Engineering
  • Medical Device Technology

Background:

  • Pulse wave analysis (PWA) is crucial for estimating central hemodynamic parameters using non-invasive applanation tonometry.
  • Previous studies noted discrepancies in the radial second systolic peak (rSPB2) between SphygmoCor and PulsePen devices.
  • Understanding these device-specific differences is vital for accurate hemodynamic assessment.

Purpose of the Study:

  • To quantitatively compare radial and carotid waveform measurements obtained from SphygmoCor and PulsePen devices.
  • To identify specific hemodynamic parameters that differ between the two devices.
  • To assess the impact of device choice on PWA-derived indices.

Main Methods:

  • Simultaneous radial and carotid waveforms were recorded in 38 patients under stable hemodynamic conditions.
  • Measurements were performed using both SphygmoCor and PulsePen devices.
  • Analysis focused on parameters including rSPB2, mean pressure, form factor, augmentation index, and carotid systolic pressure.

Main Results:

  • Significant differences were observed in radial rSPB2, mean pressure, form factor, and augmentation index between the devices, with SphygmoCor yielding lower values.
  • Carotid augmentation index and form factor showed similarity, but carotid systolic pressure was higher with PulsePen.
  • Harmonics moduli were similar across the spectrum, except for the 1st harmonic, for both radial and carotid signals.

Conclusions:

  • SphygmoCor and PulsePen sensors are not equivalent and produce different waveform shapes, particularly for radial measurements.
  • The observed discrepancies suggest that indices derived from these devices may not be interchangeable.
  • Further research is needed to correlate PWA-derived parameters with invasive measurements for both devices.