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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...
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The electric field and electric potential are related to each other. If the electric field at various points in the region of interest is known, it can be used to calculate the electric potential difference between any two points. Similarly, if the electric potential is known for various points, then it is possible to calculate the electric field.
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Changing the Direction and Orientation of Electric Field During Electric Pulses Application Improves Plasmid Gene Transfer in vitro
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Electrical safety.

Richard C Burgess1

  • 1Department of Neurology, Cleveland Clinic Foundation, Cleveland, OH, United States.

Handbook of Clinical Neurology
|July 7, 2019
PubMed
Summary
This summary is machine-generated.

Clinical neurophysiology tests require direct electrical connections, increasing patient shock risk. Healthcare providers must ensure safe practices and regular testing to prevent electrical harm.

Keywords:
Current limitsElectric powerElectrical safetyElectrical shockGround loopsGroundingInternational Electrotechnical CommissionIsolated groundLeakage currentMacroshockMicroshockPatient isolation

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Area of Science:

  • Clinical Neurophysiology
  • Biomedical Engineering
  • Patient Safety

Background:

  • Clinical neurophysiology testing involves recording and stimulating the nervous system's electrical activity.
  • Direct electrical connections are essential for these tests, inherently posing an electrical shock risk to patients.
  • Patients with non-neurological conditions requiring internal medical devices are particularly vulnerable to electrical hazards.

Purpose of the Study:

  • To highlight the inherent electrical shock risks associated with clinical neurophysiology testing.
  • To emphasize the increased vulnerability of certain patient populations to electrical harm.
  • To underscore the importance of adherence to safety regulations and practices in mitigating electrical risks.

Main Methods:

  • The abstract discusses the fundamental principles of electrical connections in neurophysiological testing.
  • It reviews potential risks arising from equipment interactions and patient conditions.
  • It references regulatory standards (National Electrical Code) and equipment approval processes (FDA).

Main Results:

  • Clinical neurophysiology testing necessitates direct electrical contact, creating a risk of patient electrocution.
  • Combined medical equipment and patient factors can exacerbate electrical safety concerns, especially in critical care settings.
  • Despite existing regulations and approvals, unsafe equipment combinations may still pose a threat.

Conclusions:

  • Healthcare providers are responsible for implementing regular testing and safe practices.
  • A scientific understanding of electrical risks is crucial for patient protection.
  • Proactive safety measures are essential to prevent electrical injuries or fatalities in patients undergoing neurophysiological monitoring.