A 3-year-old child is brought to the emergency department by parents who report that the child was playing with small toys and suddenly began coughing violently, then became unable to speak or cry. The child is now sitting upright, leaning forward, with obvious respiratory distress and cyanosis around the lips. What is the nurse's immediate priority action?

• 1 Place the child in a supine position and prepare for immediate intubation
• 2 Administer high-flow oxygen via face mask and obtain chest X-ray
• 3 Perform back blows and chest thrusts using appropriate pediatric technique ✓ 정답
• 4 Insert an oral airway and begin bag-mask ventilation

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