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Cnur 103 Comprehensive Study Guide With Answers

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Cnur 103 Comprehensive Study Guide With Answers

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CNUR 103 COMPREHENSIVE STUDY
GUIDE WITH ANSWERS

◉ When must respirations be counted for a full minute?
Answer: If breathing is abnormal.


◉ What positions suggest respiratory distress?
Answer: Tripod or orthopneic.


◉ What does pulse oximetry measure?
Answer: Oxygen saturation (SpO₂).


◉ What physical signs indicate hypoxia?
Answer: Cyanosis of lips/nails and delayed capillary refill.


◉ How long may stabilization take after applying O₂?
Answer: 5-10 minutes


◉ What must be documented after oxygen application?
Answer: Assessment, intervention, patient response, teaching
provided.


◉ What defines low-flow oxygen devices?

, Answer: Set flow rate (LPM), variable FiO₂ depending on
breathing pattern.Used for low-moderate oxygen support.Do NOT
guarantee exact FiO₂.


◉ Nasal prongs (nasal cannula) - flow rate + FiO2
Answer: 1-6 LPM → 24-40% FiO₂


◉ when add humidity
Answer: more than 4 LPM


◉ Main disadvantages of nasal prongs?
Answer: Variable FiO₂, nasal dryness, skin irritation, dislodges
easily.


◉ Main advantages of nasal prongs?
Answer: Comfortable, allows eating/talking, inexpensive.


◉ Simple mask - flow rate + FiO2
Answer: 5-10 LPM → 35-50% FiO₂.


◉ Why minimum 5 LPM for simple mask?
Answer: Prevent CO₂ rebreathing.


◉ When used simple mask?

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