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Related Concept Videos

Household Wiring And Electrical Safety01:13

Household Wiring And Electrical Safety

Companies that supply power to most modern households use three conductors, typically called a three-wire line. While one is neutral, the other two are both at 120 V but with opposite polarity, giving a voltage of 240 V between them. With a three-wire line, high-power appliances that require 240 V, such as electric stoves and clothes dryers, are linked between the two hot lines. 120 V appliances can be connected between the neutral and either of the hot lines. The neutral side, which is always...
Burn Injuries01:22

Burn Injuries

Burn injuries occur when the skin and underlying tissues are damaged due to exposure to heat, electricity, chemicals, radiation, or friction. They can vary in severity, from minor superficial burns to severe deep burns that can be life-threatening.
The damage results in the death of skin cells, which can lead to a massive loss of fluid. Dehydration, electrolyte imbalance, and renal and circulatory failure follow, which can be fatal. Burn patients are treated with intravenous fluids to offset...
Electrical Systems01:21

Electrical Systems

In electrical engineering, the analysis of networks composed of passive linear components — resistors (R), capacitors (C), and inductors (L) — is fundamental. These components are organized into circuits where the relationship between input and output can be analyzed using transfer functions. The transfer function of an RLC circuit, which relates the voltage across a capacitor to the input voltage, can be derived using Kirchhoff's laws.
To derive the transfer function, consider an RLC circuit...
Spinal Cord Injury ll: Pathophysiology01:14

Spinal Cord Injury ll: Pathophysiology

Spinal cord injury progresses through two interconnected phases: primary injury and secondary injury.Primary InjuryPrimary injury happens at the moment of trauma and involves immediate mechanical damage to the spinal cord.Compression happens when broken vertebrae, herniated discs, or accumulating blood (such as a hematoma) press directly against the spinal cord, distorting its normal shape and function. In cases of contusion, the cord is bruised by a blunt force (like penetrating injuries or...
Electrical Power01:07

Electrical Power

Electric power is the product of current and voltage, represented in units of joules per second, or watts. For example, cars often have one or more auxiliary power outlets with which you can charge a cell phone or other electronic devices. These outlets may be rated at 20 amps and 12 volts, so that the circuit can deliver a maximum power of 240 watts. Consider a 25 Watt bulb and a 60 Watt bulb. The conversion of electrical energy produces heat and light, while the kinetic energy lost by the...
Insulation Coordination01:23

Insulation Coordination

Insulation coordination is the process of matching electric equipment's insulation strength with protective device characteristics to protect the equipment against expected overvoltages. This selection is based on engineering judgment and cost. Equipment can generally withstand short-duration high transient overvoltages, but repeated tests with identical waveforms can yield inconsistent results. As a result, standard impulse voltage waveforms are used for testing, defined by specific times for...

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Paradigms of Lower Extremity Electrical Stimulation Training After Spinal Cord Injury
08:07

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Published on: February 1, 2018

[Electrical injuries].

Dalia Adukauskiene1, Venta Vizgirdaite, Sandra Mazeikiene

  • 1Clinic of Intensive Therapy, Kaunas University of Medicine, Kaunas, Lithuania.

Medicina (Kaunas, Lithuania)
|April 7, 2007
PubMed
Summary

Electrical trauma, including lightning strikes, poses significant risks, leading to severe injuries and fatalities worldwide. Prevention through understanding electrical dangers is crucial for protecting children and adults.

Area of Science:

  • Medical Science
  • Public Health

Background:

  • Electrical trauma results from various sources, including low-voltage, high-voltage, lightning, and voltaic arcs.
  • Victims often include children, teenagers, and working-age adults, with injuries ranging from minor to life-threatening.
  • Lightning strikes cause 1000-1500 serious injuries annually, with a 20-30% fatality rate and 74% long-term sequelae.

Purpose of the Study:

  • To highlight the significant risks and consequences of electrical trauma.
  • To emphasize the importance of urgent medical intervention for electrical injuries.
  • To underscore the critical need for prevention strategies to reduce electrical trauma incidence.

Main Methods:

  • Review of existing literature on electrical trauma.
  • Analysis of injury statistics and outcomes related to electrical incidents.

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  • Discussion of clinical manifestations and treatment modalities.

    • Main Results:

    • Cardiac or respiratory arrest is the primary cause of death in electrical trauma.
    • Survivors often experience permanent injuries and long-term health issues.
    • Electrical injuries necessitate intensive care and often require complex, multi-stage surgical treatment.

    Conclusions:

    • Electrical trauma is a serious public health concern with high rates of mortality and long-term disability.
    • Prompt and appropriate emergency care is vital for improving survival rates.
    • Public awareness and avoidance of electrical hazards are paramount for effective prevention, particularly for vulnerable populations.