What test uses arterial blood to determine pH, PaCO2, PaO2, and bicarbonate?

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Multiple Choice

What test uses arterial blood to determine pH, PaCO2, PaO2, and bicarbonate?

Explanation:
Arterial blood gas analysis uses arterial blood to measure pH, PaCO2, PaO2, and bicarbonate. The pH shows acid-base status, PaCO2 indicates the respiratory component (ventilation), PaO2 reflects oxygenation, and bicarbonate reveals the metabolic component. Together they identify what kind of acid-base disturbance is present and whether compensation has occurred, while also assessing how well oxygen is being delivered. Since it uses arterial blood, it provides true arterial oxygen values, unlike venous samples. Other items like an arterial line are monitoring tools, and venous blood gas uses venous blood and doesn’t reliably reflect arterial oxygenation.

Arterial blood gas analysis uses arterial blood to measure pH, PaCO2, PaO2, and bicarbonate. The pH shows acid-base status, PaCO2 indicates the respiratory component (ventilation), PaO2 reflects oxygenation, and bicarbonate reveals the metabolic component. Together they identify what kind of acid-base disturbance is present and whether compensation has occurred, while also assessing how well oxygen is being delivered. Since it uses arterial blood, it provides true arterial oxygen values, unlike venous samples. Other items like an arterial line are monitoring tools, and venous blood gas uses venous blood and doesn’t reliably reflect arterial oxygenation.

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