Exam (elaborations)
Respiratory Care Exam Key Concepts And Practice Questions For Success
- Course
- Respiratory Care
- Institution
- Rush University
Respiratory Care Exam Key Concepts And Practice Questions For Success
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Respiratory Care Exam Key Concepts And PracticeQuestions For Success
A patient is receiving oxygen from an "E" cylinder at 4 L/min through a nasal
cannula. The cylinder pressure is 1900 psig. How long will the cylinder run until it is
empty? -ANS>2.2 hours
After setting up a partial rebreathing mask on a patient at a flow of 8 L/min, the
reservoir bag collapses before the patient finishes inspiring. The respiratory care
practitioner should do which of the following?
-Change to a 6 L/min NC
-Decrease flow
-Change to a NRB
-Increase the flow -ANS>Increase the flow
The following blood has levels have been obtained from a patient using a 60%
aerosol mask; pH 7.47, PaCO2 31, PaO2 58. What should the respiratory care
practitioner recommend at this time? -ANS>Place the patient on CPAP
Given the following data, what is the patient's total arterial O2 content?
pH 7.41, PaCo2 37, PaO2 88, HCO 26, SaO2 95%, Hb 14 -ANS>18 g/dL
,A patient is using a 30% Venturi mask at an O2 flow of 5 L/min. The total flow
delivered by this device is which of the following?
-36 L/min
-45 L/min
-54 L/min
-60 L/min -ANS>45 L/min
Name 3 examples of low-flow O2 delivery devices -ANS>Simple mask, NC, NRB
List 5 conditions that affect accuracy of pulse ox? -ANS>Ambient light, nail polish,
severe hypoxemia, skin pigment, and temperature
List the 3 ventilator criteria that should be met by patients receiving O2 from low-
flow devices -ANS>Consistent vent pattern, VT 300-700 mL, and RR < 25/min
The physician orders O2 therapy for a patient with a VT of 400 mL and Ti of 0.5 s.
What flow must the mask deliver to meet the patient's inspiratory demand? -
ANS>48 L/min
How does water in the aerosol tubing of a mask affect delivered FiO2? -
ANS>Increases FiO2
What does hydrostatic testing of cyclinders determine? -ANS>wall stress, cylinder
expansion, and leaks
,What is the working pressure of cylinders? -ANS>50 psi
Name 3 ways to determine if a flowmeter is pressure compensated? -
ANS>Labeling, needle located distal to float (proximal to patient), and float jumps
when plugged into wall (turned off)
List 3 indications for O2 therapy -ANS>Hypoxemia, increased WOB, and increased
myocardial work
Name 5 causes of hypoxemia -ANS>inadequate FiO2, alveolar hypoventilation, V/Q
mismatch, diffusion defect, and anatomical shunt (right to left)
Secretions tend to become thicker if the inspired gas has what characteristics? -
ANS>Water content is less than 44 mg/L at body temperature
After connecting a NC to the humidifier outlet, you kink the tubing and hear a
whistling noise coming from the humidifier. What has most likely caused this? -
ANS>The pop off valve has opened due to excessive pressure and no leaks are
present
You notice that the patient's secretions have become thicker and more difficult to
suction since replacing the ventilator humidifier with a heat moisture exchanger.
The respiratory therapist should recommend; -ANS>Replace the HME with a
conventional heated humidifier
, Which of the following are indications for bland aerosol therapy?
-Cough induction/sputum induction
-Improved mobilization of secretions
-Treatment of postextubation inflammation of the upper airway -ANS>-Cough
induction/sputum induction
-Improved mobilization of secretions
-Treatment of postextubation inflammation of the upper airway
You notice that very little mist is being produced by a nebulizer attached to an
aerosol mask. Which of the following could be responsible for this?
-Liter flow is too high
-Nebulizer jet is clogged with soap residue
-Capillary tube filter is obstructed -ANS>-Nebulizer jet is clogged with soap residue
-Capillary tube filter is obstructed
List 5 hazards of aerosol therapy; -ANS>Bronchospasm, overhydration,
overheating, tubing condensation, contaminated water
How much of a humidity deficit exists when a patient inspires air holding 30 mg
H20/L? -ANS>14 mg/L
A clogged filter or capillary tube on a jet nebulizer has what effect on the
operation of the device? -ANS>Decreased water output
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