🔍 Key Concepts

• Basic life support (BLS) assessment: airway, breathing, circulation • Difference between abnormal breathing and no breathing • When CPR or rescue breathing is started in first aid scenarios

💭 Think About

• Which option describes a situation where the body is no longer getting any air at all? • Do we start artificial respiration just because breathing is irregular, or when breathing has stopped? • Among the choices, which condition most clearly indicates that oxygen is not entering the lungs?

✅ Before You Answer

• Identify which sign shows complete absence of breathing, not just difficulty. • Consider standard first-aid steps: check responsiveness, breathing, and pulse—what finding triggers artificial respiration? • Rule out signs that can accompany many conditions but do not by themselves prove respiratory arrest.