NURSING EXAM QUESTIONS
TOXICOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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occur over a long time
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combine with another toxic agent to increase the effect
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occur immediately
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always fatal
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Detailed explanation-1: -DEFINITIONS. 1. Acute toxicity refers to those adverse effects occurring following oral or dermal administration of a single dose of a substance, or multiple doses given within 24 hours, or an inhalation exposure of 4 hours. CLASSIFICATION CRITERIA FOR SUBSTANCES.
Detailed explanation-2: -What is acute toxicity versus chronic toxicity? Acute toxicity occurs from a single dose of toxin. Chronic toxicity occurs from small doses of toxins administered to an organism over time, usually weeks or months.
Detailed explanation-3: -Acute toxicity The health effects may be temporary, such as skin irritation, dizziness or nausea, or they may be permanent: blindness, scars from acid burns, mental impairment and so on. Acute toxicity is often seen within minutes or hours after a sudden, high exposure to a chemical.