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Section 1: Fundamentals of Electrical Safety in the OR

Electrical Risks in the Operating Room

Introduction to Isolated Power Systems

Section 2: The Line Isolation Monitor (LIM)

Reading the Line Isolation Monitor

Common Causes of Leakage Current

Section 3: Alarms and Response Protocols

When the Alarm Sounds: Immediate Actions

Troubleshooting Active Alarms

Section 4: Testing and Maintenance Requirements

Routine Testing Procedures

Annual Compliance and Certification

Quiz

Quiz: Electrical Safety Concepts

Quiz: Reading the Monitor

Quiz: Alarm Response Scenarios

Quiz: Equipment Management

Quiz: Testing and Compliance

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Keep your patients safe and your operating room compliant with a clinical staff focused, step-by-step course on isolated power systems. Isolated Power Systems: Safety, Alarms, and Testing for Clinical Staff translates complex electrical concepts into clear, clinical actions you can use at the bedside. You will learn why anesthetized and catheterized patients are more vulnerable to shock, how isolated power reduces risk by limiting leakage current, and exactly what the Line Isolation Monitor (LIM) is telling you in real time. Through practical scenarios, you will confidently respond to alarms without interrupting life-sustaining care, identify equipment that commonly raises Total Hazard Current, and apply a systematic approach to troubleshooting during procedures. The course also covers daily LIM check routines, documentation for hospital logs, and what NFPA 99 requires for annual testing and certification—so you know your role and when to involve clinical engineering. Short lessons, clear visuals, and interactive checks for understanding make it easy to retain the essentials. Whether you’re new to the OR or refreshing competencies, this course gives you the language, judgment, and hands-on steps to keep patients and staff protected while maintaining workflow and accreditation readiness.

Isolated Power Systems: Safety, Alarms, and Testing for Clinical Staff

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            <p>The operating room environment presents unique electrical hazards that necessitate specialized power distribution systems to ensure patient and staff safety. Unlike standard residential or commercial electrical grids, healthcare facilities utilize isolated power systems to mitigate the risks of macroshock and microshock, particularly for patients who are anesthetized or have direct cardiac pathways via catheters and electrodes. This course provides a comprehensive examination of these systems, detailing how they function to limit leakage current and maintain a "floating" power supply that prevents a single ground fault from resulting in an electrical discharge through a patient or clinician.</p>

<p>Mastery of the Line Isolation Monitor (LIM) is a critical competency for perioperative nursing staff. Throughout this curriculum, participants will learn to interpret visual indicators and hazard current gauges, identify common sources of leakage current, and execute standardized protocols when alarms occur during surgical procedures. Furthermore, the course outlines essential troubleshooting techniques for faulty equipment and reviews the regulatory requirements for routine testing and annual compliance as mandated by NFPA 99. By the conclusion of this training, nurses will be equipped to manage isolated power systems effectively, ensuring a safe environment for high-risk clinical interventions.</p>
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