Certified Transport Registered Nurse Certification Practice Exam

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Prepare for the Certified Transport Registered Nurse Test. Use flashcards and multiple choice questions with hints and explanations. Equip yourself for success in your certification exam!

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What are the normal values for PaO2?

70 - 80
80 - 100
90 - 110
100 - 120

The correct answer is: 80 - 100

The normal values for PaO2, or arterial partial pressure of oxygen, are typically established within the range of 80 to 100 mmHg. This range reflects the optimal levels of oxygen that are expected in a healthy adult under standard atmospheric conditions. Values in this range indicate that the lungs are effectively transferring oxygen into the bloodstream, which is crucial for ensuring that tissues receive adequate oxygen for metabolic processes. PaO2 values below 80 mmHg are often indicative of hypoxemia, which can lead to various clinical symptoms and necessitate further evaluation and potential intervention. Conversely, values significantly above 100 mmHg could suggest hyperoxia, where there is an excess of oxygen in the blood, which can also pose risks. Therefore, understanding and recognizing that the normal range falls between 80 and 100 mmHg is fundamental for assessing a patient’s respiratory status and guiding treatment decisions in transport nursing and critical care settings.