Name: _____________________________________
Year Level: _______________
Date: _____________
Multiple choice:
ANSWER KEY:
1. A patient is receiving O2 from an H cylinder at 8L/min via nasal cannula. How long will the full H cylinder run
until it is empty?
A. 47 min B. 14.39 h
C. 35.5 m D. 3.6 h
2. Gas cylinders are stored at high pressures; a full O2 cylinder contains how many pressure?
A. 1900 psig B. 2200 psig C. 3600 psig D. 2300 psig
3. A patient with carbon monoxide (CO) poisoning can best be treated with which of the following therapies?
A. Nasal cannula at 6 L/min
B. Simple O2 mask @ 10 LPM
C. CPAP and 60% O2 D. Non-rebreathing mask
4. Indications for O2 therapy are the following EXCEPT.
A. Labored breathing or dyspnea B. Impairment of special senses C. Hypoxemia D. Increased myocardial work
5. This is caused by high PaO2 levels in infants and results in blindness. It is more common in premature infants.
A. Hypoxemic hypoxia B. NPO C. CO poisoning D. ROP
6. The patient with chronic obstructive pulmonary disease (COPD) who is chronically hypoxic is most affected by
the respiratory depression. For these patient, what level of PaO2 should be maintain?
A. Between 50 and 65 mm Hg B. 45-55 mm Hg C. Between 90-95 mm hg D. 70-60 mm Hg
7. The following are the complications of O2 therapy EXCEPT.
A. Respiratory depression B. Atelectasis C. O2 toxicity D. Alveolar hypoventilation
8. Type of hypoxia that the oxidative enzyme mechanism of the cell is impaired as a result of: Cyanide poisoning
and Alcohol poisoning. Rarely accompanied by hypoxemia but is accompanied by increased venous PO2 levels.
A. Anemic hypoxia B. Hypoxemic hypoxia C. Histotoxic hypoxia D. Stagnant (circulatory) hypoxia
9. What is the normal level of PaO2 in infants?
A. 50 to 70 mm Hg B. 80-85 mm Hg C. 60-75 mm Hg D. 45-35 mm Hg
10. Types of Hypoxia caused by lack of O2 in the blood.
A. Anemic hypoxia B. Hypoxemic hypoxia C. CO poisoning D. Stagnant (circulatory) hypoxia
11. The patient has been exposed to CO. What device you shoud select to be used?
A. Nasal cannula @ 3L B. Rebreathing Mask C. O2 mask @ 2L D. CPAP
12. Types of Hypoxia that reduced the blood’s capacity to carry O2 as a result of decreased Hb level.
A. Anemic hypoxia B. Hypoxemic hypoxia C. CO poisoning D. Stagnant (circulatory) hypoxia
13. Given the following information, calculate the patient’s total arterial O2 content. (10pts)
Arterial Blood Gas Study Results pH 7.42 PCO2 41 mm Hg PO2 90 mm Hg SaO2 98% Hb 15 g/dL
Computation:
Answer: O2 bound to Hb = 1:34 x 15 x 0.98 =19.7mL/dL
O2 dissolved in plasma =0:003 X 90= 0.27mL/Dl
* Total arterial O2 content =19.7mL + 0.27mL=19.97mL/dL
14. Simple O2 mask delivers what percentage level of oxygen?
A. 35% to 50% B. 40% to 70% C. 50% to 60% D. 45% to 60%
Identify the figures below: (2pts each)
15-16. PARTIAL REBREATHING MASK
17-18. NON REBREATHING MASK
19-20. SIMPLE O2 MASK
22-23. AIR ENTRAINTMENT MASK
20-21. NASAL CANNULA
24-25. TRANSTRACHEAL CATHETER
Multiple choice:
26. Secretions tend to become thicker if the inspired air has which of the following characteristics?
A. A relative humidity of 100% at body temperature B. 32 mg H2O per liter of gas C. A water vapor pressure of
47 mm Hg D. 48 mg H2O per liter of gas
27. A patient receiving 38 mg H2O per liter of gas from a nebulizer has a humidity deficit of which of the
following?
A. 6 mg/L B. 9 mg/L C. 12 mg/L D. 18 mg/L
28. After connecting a nasal cannula to the humidifier outlet, you kink the tubing and hear a whistling noise
coming from the humidifier. Which of the following most likely has caused this?
A. The humidifier jar is cracked. B. The capillary tube in the humidifier is disconnected. C. The humidifier has no
leaks. D. The top of the humidifier is not screwed on tightly.
29. 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 which of
the following?
A. Increase inspiratory flow. B. Decrease the temperature to the heat moisture exchanger. C. Replace with a
new heat moisture exchanger. D. Replace the heat moisture exchanger with a conventional heated humidifier.
30. Which of the following are indications for cool, bland aerosol therapy?
1. A cough must be induced for sputum collection. 2. Mobilization of secretions must be improved. 3. Post
extubation inflammation of the upper airway must be treated.
A. 1 only B. 1 and 3 only C. 2 and 3 only D. 1, 2, and 3
31. 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?
1. The liter flow is too high. 2. The nebulizer jet is clogged with lint. 3. The filter on the capillary tube is
obstructed.
A. 1 only B. 2 only C. 1 and 3 only D. 2 and 3 only
32. An immune compromised patient is to be placed on oxygen with a humidity/aerosol device. Which of the
following devices is most likely to deliver contaminated water to the patient?
A. Heated cascade humidifier B. Bubble humidifier C. Heated wick humidifier D. Heated jet nebulizer
33. In order to minimize an increased airway resistance produced by high density aerosol inhalation the
respiratory therapist should recommend which of the following?
A. Administer a bronchodilator along with the aerosol. B. Instruct the patient to breathe through their nose. C.
Use a heated nebulizer to deliver the aerosol. D. Perform chest physiotherapy following the aerosol treatment.
34. The respiratory therapist is asked to recommend a humidifier that will be able to provide the highest water
vapor content to the patient’s airway. Which of the following humidifiers should the therapist select?
A. Pass-over B. Heat moisture exchanger C. Heated wick D. Bubble
35. A heated humidifier is delivering 100%body humidity to a patient’s airway. What volume of water is being
delivered?
A. 24 mg/L B. 37 mg/L C. 44 mg/L D. 47 mg/
36. A patient coughs up yellow sputum after an IPPB treatment. Which one of the following statements is true in
regard to this sputum production?
A. It is old and contains little water. B. It is termed hemoptysis. C. It contains white blood cells (WBCs). D. It is a
normal color for sputum.
37. The term used to describe a condition in which a patient has difficulty breathing while in a supine position is
which of the following?
A. Orthopnea B. Hypoventilation C. Paroxysmal nocturnal dyspnea D. Kussmaul respirations
38. A patient enters the emergency department, and on initial examination the respiratory therapist observes
paradoxical chest movement. Which of the following should the therapist suspect?
A. Pulmonary edema B. Pneumonia C. Flail chest D. Pleural effusion
39. Perfusion in the extremities may best be determined by which of the following methods?
A. Obtaining ABG studies and determining PaO2 level. B. Assessing the patient’s SpO2. C. Assessing capillary
refill. D. Palpating a brachial pulse.
40. While palpating the chest, the respiratory therapist determines that there are decreased vibrations over the
right lower lobe. This may be the result of which of the following?
1. Pneumothorax 2. Pleural effusion 3. Pneumonia
A. 1 only B. 2 only C. 1 and 2 only D. 2 and 3 only
41. A chest x-ray film obtained after intubation shows the tip of the ET tube is resting at the fourth rib. Which of
the following actions should be taken?
A. The tube should be advanced 2 cm. B. The tube should be advanced until equal breath sounds are heard. C.
The tube should remain at this level. D. The tube should be withdrawn 3 cm.
42. A patient is suspected of having intra thoracic metastatic nodal disease. Which of the following imaging
studies should the respiratory therapist recommend to determine, with the highest accuracy, whether disease is
present?
A. Positron emission tomography (PET) B. Magnetic resonance imaging (MRI) C. Computed tomography (CT) D.
Pulmonary angiogram
43. Which of the following imaging studies may be useful in determining whether a pulmonary embolism is
present?
1. MRI 2. PET 3. CT 4. Chest x-ray
A. 1 and 3 only B. 1 and 2 only C. 1, 3, and 4 only D. 2, 3, and 4 only
44. The respiratory therapist notes a respiratory rate of 36/ min in an adult patient’s chart. The patient’s
breathing pattern is best described by which of the following?
A. Hyperventilation B. Dyspnea C. Hypoventilation D. Tachypnea
45. The respiratory therapistis assessing a patient with severe emphysema and observes pedal edema and
jugular venous distention. The therapist should note in the patient’s chart these signs are most likely the result
of:
A. Systemic hypertension B. Hypercapnia C. Pulmonary infection D. Right ventricular hypertrophy