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

Assessment of the Cardiovascular System III: Palpation01:27

Assessment of the Cardiovascular System III: Palpation

Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
Pre-Procedural Guidelines for Assessing Blood Pressure01:10

Pre-Procedural Guidelines for Assessing Blood Pressure

Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the patient.
Peripheral Artery Disease V: Postoperative Nursing Management01:23

Peripheral Artery Disease V: Postoperative Nursing Management

During the postoperative period, it is crucial to focus on maintaining circulation, identifying and managing potential complications, and planning for discharge.Nursing AssessmentVital signs monitoring: Regularly monitor vital signs, including blood pressure, heart rate, respiratory rate, and temperature, to detect early signs of complications such as bleeding and infection.Circulation assessment: Monitor pulses, perform Doppler assessments, and check capillary refill, color, temperature, and...
Cardiovascular System Abnormal Findings I: Inspection and Palpation01:29

Cardiovascular System Abnormal Findings I: Inspection and Palpation

In a cardiovascular examination, inspection and palpation are crucial for identifying abnormalities.
Abnormal findings observed during an inspection
Assessment of the Cardiovascular System II: Inspection01:29

Assessment of the Cardiovascular System II: Inspection

Inspection is the initial step in assessing the cardiovascular system. It involves a detailed visual examination that provides crucial information about a patient's circulatory and cardiac health. This systematic process, conducted from head to toe, helps identify signs of cardiovascular conditions by observing physical appearance, skin and mucous membranes, jugular and carotid pulsations, chest symmetry, and the condition of the extremities.
Head and Neck

You might also read

Related Articles

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

Sort by
Same author

Repeat Exposures to Spaceflight or Bed Rest and Spaceflight-Associated Neuro-Ocular Syndrome Findings.

JAMA ophthalmology·2026
Same author

Jugular venous flow dynamics during acute weightlessness and partial gravity in parabolic flight.

Journal of applied physiology (Bethesda, Md. : 1985)·2026
Same author

Volumetric 3-dimensional computed tomography analysis of proximal humeral bone resorption after reverse total shoulder arthroplasty.

Journal of orthopaedic surgery and research·2026
Same author

Spaceflight stressors impact on mitochondrial function and the risk for development of ocular pathology.

NPJ microgravity·2026
Same author

Comparative analysis of the immunomodulatory effects of extracellular vesicles from canine placental and adipose-derived mesenchymal stem cells.

American journal of veterinary research·2026
Same author

Fluid-regulating hormones and plasma volume during 60 days of head-down bed rest with exercise during artificial gravity (BRACE).

Journal of applied physiology (Bethesda, Md. : 1985)·2026

Related Experiment Video

Updated: May 7, 2026

Doppler Ultrasound-Based Leg Blood Flow Assessment During Single-Leg Knee-Extensor Exercise in an Uncontrolled Setting
09:18

Doppler Ultrasound-Based Leg Blood Flow Assessment During Single-Leg Knee-Extensor Exercise in an Uncontrolled Setting

Published on: December 15, 2023

Upper extremity hemodynamics and sensation with backpack loads.

Sae Hoon Kim1, Timothy B Neuschwander2, Brandon R Macias3

  • 1Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Republic of Korea.

Applied Ergonomics
|October 1, 2013
PubMed
Summary

Wearing a 12kg backpack significantly reduced upper extremity sensation and blood flow in healthy adults. This may impair fine motor control, impacting operational efficiency in demanding environments.

Keywords:
Blood flowParesthesiaUpper extremity

More Related Videos

A Murine Model of Hemodialysis Access-Related Hand Dysfunction
08:39

A Murine Model of Hemodialysis Access-Related Hand Dysfunction

Published on: May 31, 2022

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
09:32

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge

Published on: January 20, 2023

Related Experiment Videos

Last Updated: May 7, 2026

Doppler Ultrasound-Based Leg Blood Flow Assessment During Single-Leg Knee-Extensor Exercise in an Uncontrolled Setting
09:18

Doppler Ultrasound-Based Leg Blood Flow Assessment During Single-Leg Knee-Extensor Exercise in an Uncontrolled Setting

Published on: December 15, 2023

A Murine Model of Hemodialysis Access-Related Hand Dysfunction
08:39

A Murine Model of Hemodialysis Access-Related Hand Dysfunction

Published on: May 31, 2022

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge
09:32

Continuous Venous-Arterial Doppler Ultrasound During a Preload Challenge

Published on: January 20, 2023

Area of Science:

  • Physiology
  • Human Factors Engineering

Background:

  • Heavy backpacks are critical in military operations, affecting task efficiency.
  • Understanding physiological impacts is vital for optimizing performance and safety.

Purpose of the Study:

  • To quantify hemodynamic and sensory changes in upper extremities while wearing a loaded backpack.
  • To assess the impact of backpack load on macrovascular and microvascular function and sensation.

Main Methods:

  • Healthy adults wore a 12kg backpack for 10 minutes.
  • Measured hemodynamic parameters: brachial artery Doppler, microvascular flow (photoplethysmography), tissue oxygenation (near-infrared spectroscopy), and arterial oxygen saturation (pulse oximeter).
  • Assessed upper extremity and hand sensation using Semmes-Weinstein monofilament and 2-point discrimination tests.

Main Results:

  • A 12kg backpack significantly decreased upper extremity sensation.
  • Macrovascular and microvascular hemodynamic values were significantly reduced.
  • Reduced blood flow and oxygenation were observed in the upper extremities.

Conclusions:

  • Moderate backpack loads impair upper extremity sensation and hemodynamics.
  • Decreased macrovascular and microvascular function may lead to neurological dysfunction.
  • Impaired hemodynamics could negatively affect fine motor control, impacting operational effectiveness.