First Aid & CPR Practice · Question
Over-ventilation during CPR is harmful because it:
Excessive breaths raise intrathoracic pressure, decreasing venous return and cardiac output.
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Question: Over-ventilation during CPR is harmful because it:
Answer options: ✅ Increases intrathoracic pressure and reduces venous return
- Cools the patient
- Causes vomiting only
- Is not harmful
Correct answer: Increases intrathoracic pressure and reduces venous return
Explanation: Excessive breaths raise intrathoracic pressure, decreasing venous return and cardiac output.
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