Exam 6: Blood Gases and Related Tests

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A patient is referred for arterial blood gas testing.She has an SpO2 of 84% by pulse oximetry,but blood oximetry reveals an SaO2 of 94%.Which of the following best explains the difference between results?

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A 47-year-old female patient admitted to the emergency department after 5 days of flulike symptoms had the following blood gases obtained on an FIO2 of 0.21: A 47-year-old female patient admitted to the emergency department after 5 days of flulike symptoms had the following blood gases obtained on an F<sub>I</sub>O<sub>2</sub> of 0.21:   Which of the following best describes the acid-base status of this patient? Which of the following best describes the acid-base status of this patient?

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An outpatient is referred for a shunt study.After 25 minutes of breathing 100% O2,the patient produces the following arterial blood gas values: An outpatient is referred for a shunt study.After 25 minutes of breathing 100% O<sub>2</sub>,the patient produces the following arterial blood gas values:   If the barometric pressure is 750 and a content difference of 4.5 vol% is assumed,what is this subject's shunt? If the barometric pressure is 750 and a content difference of 4.5 vol% is assumed,what is this subject's shunt?

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A patient with a pulmonary artery (Swan-Ganz)catheter in place has the following blood gas results while breathing 100% O2 at a barometric pressure of 750 mm Hg: A patient with a pulmonary artery (Swan-Ganz)catheter in place has the following blood gas results while breathing 100% O<sub>2</sub> at a barometric pressure of 750 mm Hg:   What is the approximate percentage of shunt in this subject? What is the approximate percentage of shunt in this subject?

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A 40-year-old female patient was admitted to the emergency department with shortness of breath and had the following blood gases obtained on an FIO2 of 0.21: A 40-year-old female patient was admitted to the emergency department with shortness of breath and had the following blood gases obtained on an F<sub>I</sub>O<sub>2</sub> of 0.21:   Which of the following best describes the acid-base status of this patient? Which of the following best describes the acid-base status of this patient?

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If a patient has a fever of 40° C,the pH,as measured by an automated blood gas analyzer,will be which of the following?

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A patient is connected to a 12-lead ECG monitor and pulse oximeter before an exercise test.The HR displayed by the ECG monitor is 97;the pulse oximeter reads an HR of 141 with an SpO2 of 85%.Which of the following would be the most appropriate action?

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A patient has the following blood gas results reported: A patient has the following blood gas results reported:   What is this patient's calculated oxygen content (CaO<sub>2</sub>)? What is this patient's calculated oxygen content (CaO2)?

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