NURSING EXAM QUESTIONS
PHARMACOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A venous blood sample from which of the following sites would correlate most reliably with Pao2 and Paco2?
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Jugular vein
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Subclavian vein
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Antecubital vein
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Vein on posterior surface of a warmed hand
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Explanation:
Detailed explanation-1: -The gold standard sample for measurement of pH, pCO2 and pO2 is arterial blood [10]. Sampling of arterial blood is painful and may result in pain/anxiety-induced hyperventilation, which can potentially cause spuriously reduced pCO2.
Detailed explanation-2: -Normal Results Partial pressure of oxygen (PaO2): 75 to 100 millimeters of mercury (mm Hg), or 10.5 to 13.5 kilopascal (kPa) Partial pressure of carbon dioxide (PaCO2): 38 to 42 mm Hg (5.1 to 5.6 kPa) Arterial blood pH: 7.38 to 7.42. Oxygen saturation (SaO2): 94% to 100%
There is 1 question to complete.