Safety and emergenciesQuestion 132 of 1700
What usually causes a blocked coronary artery in a heart attack?
- A clot that forms from a buildup of plaque
- A sudden drop in the temperature of the room
- A tear in the skin of the chest wall
- Eating a large meal too quickly at supper
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Correct answer: A clot that forms from a buildup of plaque
Plaque can build up and form a clot, or a piece of it can break off. Either one can block a coronary artery.
Source: Nursing Assistant (Reuter), 3.2: Emergency Situations
Questions last reviewed: 18 October 2026