Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Special considerations while measuring blood pressure01:28

Special considerations while measuring blood pressure

1.5K
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.
1.5K
Assessment of blood pressure in brachial artery(two-step method)01:23

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

2.1K
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...
2.1K
Pulse01:16

Pulse

2.7K
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...
2.7K
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

4.0K
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...
4.0K
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

4.4K
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...
4.4K
Special considerations while measuring pulse01:13

Special considerations while measuring pulse

1.1K
Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
1.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Development of Molecularly Imprinted Conducting Polymers for Stress Biomarker Cortisol Detection.

ACS applied polymer materials·2026
Same author

Peptide Aptamer-Enabled Nanoplasmonic Digital Immunoassay for Ultrasensitive Cytokine Sensing in Early Inflammation and Immune Modulation.

ACS sensors·2026
Same author

Cerebral Autoregulation, Mannitol Response, and Outcomes in Traumatic Brain Injury: A Structural Causal Model Approach.

Neurosurgery·2026
Same author

Motor imagery BCI enables more practical and user-friendly exoskeleton control than smartwatch for users with spinal cord injury: a preliminary study.

Journal of neuroengineering and rehabilitation·2026
Same author

Optimal channel selection of electroencephalography based on functional network via global graph measurements: application for epilepsy.

Scientific reports·2025
Same author

Neurophysiological and cognitive enhancements in autonomous sensory meridian response identified using heart rate variability and electroencephalography connectivity.

Frontiers in psychology·2025

Related Experiment Video

Updated: Apr 17, 2026

Point of Care Transcranial Color-Coded Duplex Ultrasound of the Middle Cerebral Artery
04:01

Point of Care Transcranial Color-Coded Duplex Ultrasound of the Middle Cerebral Artery

Published on: August 9, 2024

2.5K

Phase-shift between arterial flow and ICP pulse during infusion test.

Dong-Joo Kim1, Marek Czosnyka, Hakseung Kim

  • 1Departments of Brain and Cognitive Engineering, Korea University, Anam-dong, Seongbu-gu, 136-713, Seoul, South Korea, dongjookim@korea.ac.kr.

Acta Neurochirurgica
|February 4, 2015
PubMed
Summary

The phase shift between intracranial pressure (ICP) and cerebral blood flow velocity (CBFV) waveforms decreases as ICP rises, indicating increased time delay. This finding relates to cerebrospinal compliance and brain elasticity.

More Related Videos

Paired Cisterna Magna Nanoinjection and Laser Speckle Contrast Imaging Assay to Study Cerebral Blood Flow Regulation In Vivo
06:24

Paired Cisterna Magna Nanoinjection and Laser Speckle Contrast Imaging Assay to Study Cerebral Blood Flow Regulation In Vivo

Published on: July 8, 2025

1.3K
Catheterization of the Carotid Artery and Jugular Vein to Perform Hemodynamic Measures, Infusions and Blood Sampling in a Conscious Rat Model
09:05

Catheterization of the Carotid Artery and Jugular Vein to Perform Hemodynamic Measures, Infusions and Blood Sampling in a Conscious Rat Model

Published on: January 30, 2015

75.6K

Related Experiment Videos

Last Updated: Apr 17, 2026

Point of Care Transcranial Color-Coded Duplex Ultrasound of the Middle Cerebral Artery
04:01

Point of Care Transcranial Color-Coded Duplex Ultrasound of the Middle Cerebral Artery

Published on: August 9, 2024

2.5K
Paired Cisterna Magna Nanoinjection and Laser Speckle Contrast Imaging Assay to Study Cerebral Blood Flow Regulation In Vivo
06:24

Paired Cisterna Magna Nanoinjection and Laser Speckle Contrast Imaging Assay to Study Cerebral Blood Flow Regulation In Vivo

Published on: July 8, 2025

1.3K
Catheterization of the Carotid Artery and Jugular Vein to Perform Hemodynamic Measures, Infusions and Blood Sampling in a Conscious Rat Model
09:05

Catheterization of the Carotid Artery and Jugular Vein to Perform Hemodynamic Measures, Infusions and Blood Sampling in a Conscious Rat Model

Published on: January 30, 2015

75.6K

Area of Science:

  • Neurology
  • Biomedical Engineering
  • Physiology

Background:

  • The relationship between intracranial pressure (ICP) and cerebral blood flow velocity (CBFV) pulse waveforms may reflect cerebrospinal compliance.
  • Investigating the phase shift between ICP and CBFV harmonics offers insights into this dynamic.

Purpose of the Study:

  • To investigate the phase shift between fundamental harmonics of ICP and TCD CBFV waveforms.
  • To determine the relationship between phase shift and cerebrospinal compliance during CSF infusion tests.

Main Methods:

  • 37 normal pressure hydrocephalus patients underwent CSF infusion tests.
  • Transcranial Doppler (TCD) was used to record CBFV in the middle cerebral artery.
  • Continuous ICP and pressure-volume (PV) signals were analyzed using ICM+ software.

Main Results:

  • A negative phase shift was observed initially (median -11°).
  • Phase shift significantly decreased with increasing ICP (p<0.00001).
  • Phase shift showed an inverse association with brain elasticity (R=-0.51, p=0.0009).

Conclusions:

  • The phase shift between ICP and TCD waveforms diminishes as ICP elevates.
  • This decrease is attributed to a prolonged time delay between the systolic peak of the CBFV wave and the ICP pulse.