Medical Gas Therapy Chapter 38, pgs. 867-901.
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| show | A) It can occur only when breathing supplemental O2.
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| To ensure the prescribed FIO2 for a patient receiving 65% O2, you apply a closed reservoir delivery system with a one-way expiratory valve. What other component must be included in this system to ensure a fail-safe operation? | show 🗑
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| At an FIO2 of 1, what is the approximate half-life of blood carboxyhemoglobin? | show 🗑
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| Which of the following would indicate adequate oxygenation for adult patients with chronic lung disease and an accompanying acute-on-chronic hypoxemia? I. SaO2 of 90% or higher II. PaO2 of 50 mm Hg to 60 mm Hg III. SaO2 of 85% to 90% | show 🗑
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| show | A) The chamber normally is filled with 100% O2.
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| show | I. Reduce the NO to the lowest effective dose (ideally, less than 5 ppm). II. Hyperoxygenate the patient just before discontinuing NO. III. Ensure that the patient is hemodynamically stable. D) I, II, and III
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| show | A) O2 blending system
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| show | B) Increase the device’s input flow to 10 L/min.
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| Which of the following would indicate a need for O2 therapy for a newborn infant? I. SaO2 less than 88% II. Capillary PO2 less than 40 mm Hg III. PaO2 less than 60 mm Hg | show 🗑
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| Features of an ideal delivery system for NO for use with mechanical ventilation include all of the following except | show 🗑
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| You must deliver the highest possible FIO2 to a 67-year-old man with pulmonary edema breathing at a rate of 35/min. Which of the following O2 delivery systems would be most appropriate? | show 🗑
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| show | C) 50%
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| show | A) 2 hours
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| Which of the following signs and symptoms are associated with the presence of hypoxemia? | show 🗑
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| Retinopathy of prematurity may result in which of the following? | show 🗑
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| show | B) septic shock.
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| Which of the following factors determine the actual O2 provided by an air-entrainment system? | show 🗑
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| An infant requires both a precise high FIO2 and maintenance of a neutral thermal environment. Which of the following systems can best achieve these goals? | show 🗑
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| A physician orders a 70% He:30% O2 mixture to reduce the work of breathing in a patient having an acute asthmatic attack. Which of the following delivery systems would be appropriate in this case? | show 🗑
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| show | A) 1 hour
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| At what level of carboxyhemoglobin saturation is hyperbaric oxygen (HBO) therapy indicated for an adult patient? | show 🗑
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| Which of the following is FALSE about air-entrainment systems? | show 🗑
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| show | A) recruitment of collapsed alveoli.
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| Physiologic effects of hyperbaric oxygen (HBO) therapy include all of the following except: | show 🗑
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| A physician orders 40% O2 through an air-entrainment nebulizer for a patient with a minute volume of 12 L/min. What is the minimum nebulizer input flow required to ensure the prescribed FIO2? | show 🗑
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| What are some key patient considerations in selecting O2 therapy equipment? | show 🗑
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| show | C) One-third as much
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| show | D) improved pulmonary diffusing capacity.
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| show | C) Increased O2 concentrations
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| To confirm proper operation of an O2 blending system, what should you do? I. Test low-pressure alarms and bypass systems. II. Analyze FIO2 at 0.21, 1.00, and prescribed level. III. Confirm air and O2 inlet pressures. | show 🗑
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