Related Experiment Video
Updated: Feb 16, 2026
08:21
Effects of Blast-induced Neurotrauma on Pressurized Rodent Middle Cerebral Arteries
Published on: April 1, 2019
7.6K
The Effects of External Pneumatic Splint Pressure on Muscle Blood Flow.
E C Campion1, D C Hoffmann1, R P Jepson1
1University Department of Surgery, Royal Adelaide Hospital, Adelaide.
The Australian and New Zealand Journal of Surgery
|December 22, 2017
Summary
External pneumatic pressure significantly reduces calf muscle blood flow. For first-aid, inflation pressures should not exceed 30 mm of mercury to maintain adequate circulation.
Area of Science:
- Physiology
- Biomedical Engineering
- Sports Medicine
Background:
- Understanding the impact of external pressure on muscle circulation is crucial for medical and athletic applications.
- Pneumatic compression is used in various therapeutic settings, necessitating knowledge of its physiological effects.
Purpose of the Study:
- To quantify the effect of external pneumatic pressure on calf muscle blood flow.
- To determine safe pressure limits for therapeutic or first-aid applications.
Main Methods:
- Utilized the Xenon-133 clearance curve technique to measure muscle blood flow.
- Applied controlled external pneumatic pressure to the calf.
Main Results:
- A significant reduction in muscle blood flow was observed at 40 mm of mercury external pressure.
- Blood flow was markedly impaired under elevated pneumatic pressure conditions.
Conclusions:
- External pneumatic pressures exceeding 30 mm of mercury can critically impede calf muscle blood flow.
- Recommended pressure limits for first-aid applications to avoid compromising circulation.
More Related Videos
04:34A Novel Non-invasive Method for the Detection of Elevated Intra-compartmental Pressures of the Leg
Published on: May 31, 2019
9.7K
07:49Application of Consistent Massage-Like Perturbations on Mouse Calves and Monitoring the Resulting Intramuscular Pressure Changes
Published on: September 20, 2019
6.1K
Related Concept Videos
01:21Sites for measuring blood pressure
3.7K
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
The Brachial Artery: Primary Site for Blood Pressure Measurement
3.7K
01:17Measurement of Blood Pressure
3.3K
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...
3.3K
01:30Equipments Used To Measure Blood Pressure
3.7K
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...
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...
3.7K
01:24Blood Pressure
10.4K
The movement of blood in a human body, commonly referred to as blood flow, is determined by the volume of blood that traverses a certain section of the bodily system per unit time. It is the rhythmic contraction of the heart's ventricles that primarily instigates this movement. As the ventricles contract, blood is forced into the prominent arteries, which then flow from areas of greater pressure to lower pressure areas. This movement continues into smaller arteries and arterioles and...
10.4K
01:17Autoregulation of Blood Flow
8.3K
Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
8.3K
01:16Pulse
2.3K
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...
The pulse serves as a clinical...
2.3K