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Incorrect 0/1 pts Question 2 Why are the coronary arteries important? They supply oxygen-rich blood to the head. They supply
Incorrect 0/1pts Question 3 For CPR to be most effective, the patient should be- Positioned on his/her head so it is slightly
Incorrect 0/1pts Question 9 The correct compression-to-ventilation ratio for single rescuer infant CPR is- 30-2 30-1 O 15-2 1
Incorrect 0/1 pts Question 10 When performing CPR on an adult, the depth of the compression should be- 1/2 inch 1 inch 1 1/2
Incorrect 0/1 pts Question 14 When performing CPR on a child, the depth of the compression should be- 1/2 inch 1 inch 11/2 in
Incorrect 0/1 pts Question 15 When performing CPR on an infant, the depth of the compression should be- O 1/2 inch 1 inch 11/
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Q2. Coronary arteries are important because they supply oxygen-rich blood to the heart muscles.

There are three 2 main coronary arteries 1. right coronary artery(RCA) 2. LMCA(Left main coronary artery)

LMCA again divided into two branches 1. LAD 2. LCX

Q3. For CPR to most effective patient should be on his/her back on a firm and flat surface.

Because the Supine position is needed for CPR and firm, flat surface increases the effectiveness of chest compression.

Q9. The correct compression to ventilation ratio for single rescue in infant CPR is 30:2

That means 30 compressions to two breaths.

Q 10. When performing CPR on an adult, the depth of compression should be at least 2 inches.

depth is very necessary for quality CPR.

Q 14. When performing CPR on a child, the depth of compression should be 1 and 1/2 inches.

Q 15. When performing CPR on an infant, the depth of compression should be 1 and 1/2 inches.

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