Certified Nurses Operating Room (CNOR) Practice Exam

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Prepare for the Certified Nurses Operating Room Test. Utilize flashcards and multiple choice questions; each accompanied by hints and in-depth explanations. Ace your exam with confidence!

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What is the normal pH range in arterial blood gas (ABG) analysis?

7.25-7.35
7.30-7.40
7.35-7.45
7.40-7.50

The correct answer is: 7.35-7.45

The normal pH range in arterial blood gas (ABG) analysis is between 7.35 and 7.45. This range is vital for assessing the acid-base status of the body. Maintaining a pH within this range is critical for normal cellular functions, as even slight deviations can lead to significant physiological impacts. When the pH falls below 7.35, it indicates acidosis, which can result from respiratory failure, metabolic disorders, or other conditions. Conversely, a pH above 7.45 indicates alkalosis, potentially caused by hyperventilation, metabolic conditions, or excessive bicarbonate. Therefore, understanding this normal range is essential for health care professionals to effectively evaluate and manage patients’ conditions, ensuring appropriate interventions can be implemented when abnormalities are detected. The other ranges provided do not reflect the accepted standards for normal arterial pH, making them not suitable as correct answers.