An explosion scene with nearby people experiencing runny noses and difficulty breathing, with some convulsions, suggests exposure to which type of hazard?

An explosion scene with nearby people experiencing runny noses and difficulty breathing, with some convulsions, suggests exposure to which type of hazard?

• A. Nerve agent
• B. Blister agent
• C. Blood agent
• D. Riot control agent

Answer: (A)

This scenario is pointing to exposure to a nerve agent. Nerve agents are organophosphates that inhibit acetylcholinesterase, causing a surge of acetylcholine in the nervous system. That overload leads to widespread parasympathetic effects such as increased secretions, including a runny nose, and airway symptoms like bronchospasm and bronchorrhea that make breathing difficult. Severe cases can progress to muscle fasciculations and seizures (convulsions) as the nicotinic receptors are overstimulated. In an explosion context, a released nerve agent would explain these rapid, cholinergic signs in nearby people. Blister agents mainly cause delayed skin and eye damage, not acute respiratory distress or seizures. Blood agents cause rapid hypoxia symptoms like headache, dizziness, and confusion, but not the characteristic secretions and convulsions seen here. Riot control agents can irritate the eyes and lungs and provoke coughing, but convulsions are not typical.

This scenario is pointing to exposure to a nerve agent. Nerve agents are organophosphates that inhibit acetylcholinesterase, causing a surge of acetylcholine in the nervous system. That overload leads to widespread parasympathetic effects such as increased secretions, including a runny nose, and airway symptoms like bronchospasm and bronchorrhea that make breathing difficult. Severe cases can progress to muscle fasciculations and seizures (convulsions) as the nicotinic receptors are overstimulated. In an explosion context, a released nerve agent would explain these rapid, cholinergic signs in nearby people.

Blister agents mainly cause delayed skin and eye damage, not acute respiratory distress or seizures. Blood agents cause rapid hypoxia symptoms like headache, dizziness, and confusion, but not the characteristic secretions and convulsions seen here. Riot control agents can irritate the eyes and lungs and provoke coughing, but convulsions are not typical.