Question 12

The Correct Answer is B. **Explanation for Option B (Suspension of breathing):** When providing first aid, the immediate priority is to ensure the victim is breathing and that their airway is open (following the principles of Airway, Breathing, Circulation—ABC). Gas poisoning can rapidly lead to respiratory depression or arrest (suspension of breathing). If the victim is not breathing, brain damage can occur within minutes. Therefore, checking for and immediately addressing the suspension of breathing (by initiating rescue breaths or CPR if necessary) is the **MOST** critical first step in determining immediate life-saving interventions. **Explanation for why other options are incorrect:** * **A) slow and weak pulse:** While a weak or irregular pulse is a serious sign of circulatory compromise, breathing takes precedence. You check for a pulse (circulation) after confirming breathing status and addressing the airway. If breathing has stopped, a pulse check is secondary to providing rescue breaths. * **C) unconsciousness:** Unconsciousness is a severe symptom of gas poisoning, indicating serious central nervous system compromise. However, an unconscious victim may still be breathing. The immediate check is whether the life function (breathing) is present, as the lack of breathing is more immediately life-threatening than the state of consciousness itself. * **D) cold and moist skin:** This is a symptom of shock, which often accompanies severe poisoning. While important to note, shock is a consequence of the physiological insult. Addressing the underlying lack of breathing is an intervention that must occur before managing symptoms like cold and moist skin.