Related Experiment Video
Updated: Jul 2, 2025

10:01
In Situ High Pressure Hydrogen Tribological Testing of Common Polymer Materials Used in the Hydrogen Delivery Infrastructure
Published on: March 31, 2018
7.6K
High-Pressure Injection Damage Caused by a High-Pressure Washer
Noritaka Funato1, Yuka Sugizaki2, Yuhei Ri3
1Department of Orthopedic Surgery, Toho University Medical Center, Sakura Hospital, Chiba, JPN.
Cureus
|February 19, 2024
Summary
High-pressure injection injuries pose diagnostic and treatment challenges due to their rarity. This case report highlights the use of imaging like CT and MRI to guide treatment decisions and predict complications.
Area of Science:
- Trauma Surgery
- Diagnostic Imaging
- Emergency Medicine
Background:
- High-pressure injection injuries (HPIIs) present diagnostic and therapeutic challenges.
- Lack of clear treatment guidelines due to injury rarity.
- Potential for severe complications including infection, compartment syndrome, and amputation.
Observation:
- This case report details the comprehensive assessment of an HPII.
- Utilized physical examination, X-rays, CT scans, and MRI for evaluation.
- Employed the Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) score to assess infection risk.
Findings:
- Diagnostic imaging, particularly MRI, is crucial for predicting complications.
- Comprehensive assessment aids in determining appropriate surgical or conservative management.
- LRINEC score assists in risk stratification for necrotizing infections.
Implications:
- Highlights the importance of advanced imaging in HPII management.
- Suggests a multimodal approach for HPII assessment and treatment planning.
- Emphasizes the need for further research to establish evidence-based guidelines for HPIIs.
Related Concept Videos
Pumped Concrete
70
Concrete in large quantities can be pumped across long distances for placing in inaccessible sites. This system comprises a hopper that receives concrete from a mixer, a pump to propel the concrete, and pipelines that facilitate its delivery.
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
For direct-acting pumps, the concrete enters the pump via the inlet valve under the action of gravity and suction created by the movement of the piston. This concrete is then forced into the pipeline and out through the outlet valve by the forward movement...
70
Shotcrete
62
Shotcrete is a specialized technique where mortar or small aggregate concrete rich in cement content is sprayed onto a surface at high velocity. The force of impact compacts the material and enables it to cling to vertical or overhead areas without sagging. The technique involves layering the shotcrete in stages until it reaches approximately 4 inches in thickness. Operator skill in nozzle management is pivotal in deciding the quality of the shotcrete. Shotcrete is used in constructing tunnel...
62
Residual Stresses
220
Residual stresses reside in a structure even after removing the original stress inducer. This phenomenon often arises from varied plastic deformations across different parts of a structure. Consider a rod stretched beyond its yield point. It will not regain its original length due to permanent deformation. Even after load removal, the rod does not entirely lose stress because of uneven plastic deformations, resulting in residual stresses. The computation of these stresses in structures is...
220
Design Example: Flow Through a Fire Extinguisher
137
A fire extinguisher that uses pressurized water relies on fluid dynamics principles to generate a high-velocity stream capable of suppressing flames. The water is stored at a much higher pressure inside the extinguisher than the surrounding atmosphere. This pressure difference forces the water to flow rapidly when the extinguisher is activated, and the behavior of the water as it exits the nozzle can be understood using fundamental equations of fluid dynamics.
The key to understanding how the...
The key to understanding how the...
137
Hydraulic Jump
82
A hydraulic jump is a sudden rise in fluid depth in open channels, occurring when high-velocity (supercritical) flow transitions to low-velocity (subcritical) flow. This phenomenon requires an upstream Froude number greater than 1, as flows with Fr1<1 remain subcritical, making a hydraulic jump impossible due to the need for negative head loss, which violates thermodynamic principles.The characteristics of a hydraulic jump depend on the upstream Froude number and are classified as...
82
Application of Pascal's Law
8.5K
Pascal's experimentally proven observations—that a change in pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid and to the walls of its container—provide the foundations for hydraulics, one of the most important developments in modern mechanical technology.
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system...
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system...
8.5K

