EFA Exit Exam • Set 7 Question 8 of 30

Which of the following devices provides the highest percentage of O2 delivery?

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Direct Answer

Option D: Non-rebreathing mask

The correct answer is: "Non-rebreathing mask". This aligns with maritime first aid standards, DG Shipping exam syllabi, and international emergency resuscitation guidelines.

All Options

Nasal cannula

Plastic facemask

Partial rebreathing mask

Non-rebreathing mask (Correct Answer)

Detailed Explanation & Context

The correct answer is: "Non-rebreathing mask". This aligns with maritime first aid standards, DG Shipping exam syllabi, and international emergency resuscitation guidelines.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Elementary First Aid (EFA).

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More Questions in EFA Set 7

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Q1 A condition where air builds up in the pleural space, collapses the lung and puts pressure on the heart is called: Q2 Oxygen humidification is recommended if you are administering oxygen for longer than: Q3 You find a male patient with obvious difficulty breathing. He is using his neck muscles, and is cyanotic. There are red blotches on his chest, and his neck is swelling. You suspect: Q4 When you are giving mouth-to-nose AR, you should: Q5 During one-rescuer CPR for adults, the ratio of compressions to ventilations should be: Q6 To correctly size an oropharyngeal airway place the flange at the corner of the mouth with the tip reaching: Q7 A guideline for normal systolic blood pressure in an adult male would be: Q8 A second dose should be offered to the patient with chest pain who is taking nitroglycerin: Q9 When suctioning a non-breathing adult casualty, a first aider should: Q10 A flail chest results when: