Res 140 Ex 4
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Which blood gas analyzer electrode uses a separate reference electrode? | show 🗑
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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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| show | B) Capnometry
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| show | A) 1 to 5 mm Hg
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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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| show | D) Carotid
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| show | C) Increase in CO2 production
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| Because of an extremely low PO2, you suspect that an arterial blood sample taken from a patient’s brachial artery might have been contaminated with venous blood. Which of the following might help to confirm your suspicion? | show 🗑
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| Pulse oximeter readings are generally unreliable at saturations below what level? | show 🗑
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| If patient pain or anxiety occurs during arterial puncture, which of the following will probably occur? | show 🗑
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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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| show | B) Inspiration of fresh respiratory gas.
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| Before attaching a transcutaneous blood gas monitor sensor to a patient, what should you do? | show 🗑
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| What is the normal range for end-tidal CO2 as measured by capnography? | show 🗑
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| Tissue injuries to be on guard for at the site of transcutaneous blood gas electrode placement include all of the following except which one? | show 🗑
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| show | A) HCO3-
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| Which of the following is false about invasive versus noninvasive monitoring? | show 🗑
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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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| show | C) 1-ml syringe
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| show | C) Uses O2 to produce a reduction–oxidation reaction.
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| You are asked to provide continuous monitoring of the FIO2 provided by a humidified O2 delivery system using a galvanic cell analyzer. Where would you install the analyzer’s sensor? | show 🗑
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| show | I. Repeat the analysis on a different analyzer. II. Compare the control to an actual patient sample. B) I and III
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| show | C) 18 to 20 ml/100 ml
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| Through which pulmonary artery catheter port would you obtain a mixed venous blood sample? | show 🗑
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| show | D) unmixed sample.
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| An outpatient scheduled for an arterial blood sample enters the pulmonary lab 20 minutes late and out of breath, having run up four flights of stairs. What should you do? | show 🗑
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| show | I. Warmed to 42° C for 10 minutes III. Cleaned with an antiseptic solution B) I and III
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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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| show | C) At least two levels of control media should be analyzed every 8 hours
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| show | C) Precision mixtures of O2 and CO2
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| All of the following are grounds for finding an alternative site for arterial puncture except: | show 🗑
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| How is the accuracy of a blood gas analyzer determined? | show 🗑
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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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| show | B) 2 standard deviations from the mean
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| Which of the following are TRUE about a blood gas analyzer’s waste fluids? | show 🗑
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| Indications for arterial blood sampling by percutaneous needle puncture include all of the following except the need to: | show 🗑
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| Indications for pulse oximetry include all of the following except the need: | show 🗑
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| A mixed venous blood sample obtained from a pulmonary artery catheter sample has a PO2 of 85 mm Hg and a hemoglobin saturation of 95%. Which of the following is likely? | show 🗑
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| What is the most common source of error and false alarms with pulse oximetry? | show 🗑
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