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Test bank For RESPIRATORY CARE EXAM REVIEW 9th Edition by Al Heuer
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Test bank For RESPIRATORY CARE EXAM REVIEW 9th Edition by Al Heuer
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Test bank For RESPIRATORY CAREEXAM REVIEW 9th Edition by Al Heuer
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? - ANS2.2 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 - ANSIncrease 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? - ANSPlace 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 - ANS18 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 - ANS45 L/min
Name 3 examples of low-flow O2 delivery devices - ANSSimple mask, NC, NRB
List 5 conditions that affect accuracy of pulse ox? - ANSAmbient 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 -
ANSConsistent 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? - ANS48 L/min
,How does water in the aerosol tubing of a mask affect delivered FiO2? - ANSIncreases FiO2
What does hydrostatic testing of cyclinders determine? - ANSwall stress, cylinder expansion,
and leaks
What is the working pressure of cylinders? - ANS50 psi
Name 3 ways to determine if a flowmeter is pressure compensated? - ANSLabeling, needle
located distal to float (proximal to patient), and float jumps when plugged into wall (turned off)
List 3 indications for O2 therapy - ANSHypoxemia, increased WOB, and increased myocardial
work
Name 5 causes of hypoxemia - ANSinadequate 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? - ANSWater
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? - ANSThe 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; - ANSReplace 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; - ANSBronchospasm, overhydration, overheating, tubing
condensation, contaminated water
, How much of a humidity deficit exists when a patient inspires air holding 30 mg H20/L? - ANS14
mg/L
A clogged filter or capillary tube on a jet nebulizer has what effect on the operation of the
device? - ANSDecreased water output
List 5 clinical indications for aerosol therapy - ANSImproved secretion mobilization, increased
delivery of aerosolized medication, prevent dehydration, induce cough, relieve upper airway
inflammation, and hydrate airways
How should a patient be instructed to breathe - ANSslow, deep breaths with 2-3 second hold on
inspiration
What is the objective of humidity therapy? - ANSmake up for water loss that occurs due to dry
gas administration or when upper airway is bypassed
Water capacity at body temperature - ANS44 mg/L
Name 3 factors that affect humidity operation - ANSduration of contact between gas and water,
surface area, and temperature
What dose reaches the lower respiratory tract when given by MDI? - ANS10%
Humidity deficit - ANSinspired air that is not fully saturated at body temperature
Perfusion in the extremities may best be determined by which method? - ANSAssessing
capillary refill
While palpating the chest, the RT determines there are decreased vibrations over RLL. This
may be the result of; - ANSPneumothorax and effusion
A CXR obtained after intubation shows the tip of the ETT resting at the fourth rib. What action
should be taken? - ANSTube should be withdrawn 3 cm
A patient is suspected of having intrathoracic metastatic disease. Which imaging study should
the RT recommend to determine whether the disease is present? - ANSPET
Which imaging study/studies may be useful in determining whether a pulmonary embolism is
present? - ANSMRI and CT
Which muscles are used for normal ventilation? - ANSExternal intercostals and diaphragm
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