NFPA-99 Practice Exam

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Study for the NFPA-99 Exam with comprehensive quizzes that include multiple-choice questions, hints, and explanations. Prepare effectively to demonstrate your proficiency in healthcare facility regulations.

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What source is prohibited for powering a venturi of a WAGD system?

Inert gas
Instrument air
Medical air
Water

The correct answer is: Medical air

In a Waste Anesthetic Gas Disposal (WAGD) system, it is essential to ensure that only suitable and safe sources are used for powering the system to maintain the integrity and intended function of the medical gases involved. Medical air, specifically, is intended for use in applications requiring breathable air for patients, such as for respiratory support or during anesthesia. Using medical air to power a venturi in a WAGD system could create a risk of contamination and potential backflow of waste anesthetic gases into the medical air supply, which could endanger patients and the effectiveness of medical care. The other sources listed, such as inert gas and instrument air, may not carry the same risks because they do not directly interact with patient respiratory systems in a clinical context. Water is also not appropriate for this application, but concerns around backflow and contamination are more pronounced with medical gases specifically designed for patient use. Thus, the prohibition against using medical air as a power source in a WAGD system stems from the need to protect patients from exposure to anesthetic agents that should not enter the medical air lines or be present in an environment that provides air for breathing.