Res 140 Ex 4
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| show | B) pH
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| Before performing puncture or cannulation of the radial artery, what should you do? | show 🗑
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| show | A) reduces turnaround time.
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| What is the measurement of CO2 in respiratory gases called? | show 🗑
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| What is the normal gradient between PaCO2 and PETCO2? | show 🗑
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| show | I. Puncture site for hematoma II. Adequacy of distal circulation A) I and II
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| show | D) Thigh
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| All of the following sites are used for arterial blood sampling by percutaneous needle puncture except: | show 🗑
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| show | C) Increase in CO2 production
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| show | C) Cross-check the sample with an SpO2 reading.
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| show | A) 80%
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| show | B) Hyperventilation
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| show | I. Inflamed or edematous tissue II. Localized areas of infection III. The fingers of neonates IV. Previous puncture sites D) I, II, III, and IV
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| What is the most common technique used to measure CO2 in respiratory gases? | show 🗑
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| show | A) Blood pressure
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| To measure PCO2, blood gas analyzers use what electrode? | show 🗑
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| Before connecting the sample syringe to an adult’s arterial line stopcock, what would you do? | show 🗑
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| During a single-breath capnogram, the sharp downstroke and return to baseline that normally occurs after the end-tidal point indicates what? | show 🗑
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| show | I. Provide a specified warm-up time and set the probe temperature. II. Check the membrane and prepare a sensor with an adhesive ring and gel. III. Prepare the monitoring site (remove excess hair and clean the skin).D) I, II, and III
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| What is the normal range for end-tidal CO2 as measured by capnography? | show 🗑
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| show | B) Hematomas
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| A blood gas analyzer measures all of the following except. | show 🗑
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| show | B) Laboratory analysis of gas exchange is usually noninvasive in nature.
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| A patient being monitored by capnography exhibits a sudden rise in end-tidal CO2 levels. All of the following are possible causes of this change except. | show 🗑
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| show | I. Never recap the needle without a safety device (or scoop method). II. Never handle the needle with both hands. III. Never remove the need the syringe by hand. IV. Always dispose in a proper sharps container.D) I, II, III, and IV
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| show | D) Exhalation of mainly alveolar gas.
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| The equipment necessary for capillary blood sampling includes all of the following except. | show 🗑
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| How does the Clark polarographic O2 electrode function? | show 🗑
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| show | A) Proximal to the heated humidifier.
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| When analyzing a blood gas control sample, you notice that the result falls outside the 2 SD range. How could you verify that this was a random error (error of imprecision)? | show 🗑
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| What is a normal level for CaO2? | show 🗑
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| Through which pulmonary artery catheter port would you obtain a mixed venous blood sample? | show 🗑
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| When conducting ABG analysis in the laboratory, obvious signs of preanalytical error include all of the following except: | show 🗑
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| show | C) Wait 5 minutes before taking the sample.
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| Before a sample of capillary blood is taken, what should you do to the site? | show 🗑
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| In which of the following patients would transcutaneous blood gas monitoring most likely provide inaccurate or erroneous results? | show 🗑
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| How often should blood gas calibration verification by control media take place? | show 🗑
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| What media are used to calibrate a blood gas analyzer’s gas electrodes? | show 🗑
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| All of the following are grounds for finding an alternative site for arterial puncture except: | show 🗑
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| show | B) Comparing the analyzer’s measurements to known values.
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| To avoid thermal injury with transcutaneous blood gas monitor sensors, what should you do? | show 🗑
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| show | A) Switch sites or replace the sensor probe.
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| What is the best site for capillary puncture in an infant? | show 🗑
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| Precautions and/or possible complications of arterial puncture include which of the following? | show 🗑
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| Statistically derived limits for internal quality control of blood gas samples are usually set at what appropriate level? | show 🗑
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| show | I. A strong disinfectant should be added to waste fluid containers. II. Waste fluids should be handled as if they were blood samples. III. Waste fluids should be treated as potentially infectious.D) I, II, and III
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| show | B) assess the adequacy of tissue oxygenation.
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| Indications for pulse oximetry include all of the following except the need: | show 🗑
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| show | I. The pulmonary artery catheter balloon was not deflated. III. The blood sample was withdrawn too quickly.B) I and III
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| show | B) Patient motion artifact
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