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NUR 354 Exam 3 Questions and Answers Latest Update
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NUR 354 Exam 3 Questions and Answers Latest Update
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NUR 354 Exam 3 Questions andAnswers Latest Update
Aa 92 y/o female pt is being admitted to the emergency department with severe
shortness of breath. Being aware of the patient's condition, what approach should the
nurse use to assess the patients lungs (select all that apply)
a. Apex to base
b. Base to apex
c. Lateral sequence
d. Anterior then posterior
e. Posterior then anterior - Answer-b, e
What keeps alveoli from collapsing?
a. Carina
b. Surfactant
c. Empyma
d. Thoracic cage - Answer-Surfactant
What accuratly describes the alveolar sacs?
a. line the lung pleura
b. warm and moisturize inhaled air
c. terminal structures of the respiratory tract
d. contain dead air that is not available for gas exchange - Answer-Terminal structures
of the respiratory tract
What covers the larynx during swallowing?
a. trachea
b. epiglottis
c. turbinates
d. parietal pleura - Answer-epiglottis
Priority decision: A 75 y/o patient who is breathing room air has the following ABG
results: pH 7.40, PaO2 74 mm Hg, SaO2 92%, PaCO2 40 mmHg. What is the MOST
appropriate action by the nurse?
a. Document the results in the patients record
b. repeat the ABGs within an hour to validate the findings
c. encourage deep breathing and coughing to open the alveoli
d. initiate pulse oximetry for continuous monitoring of the patients oxygen status -
Answer-documeny the results in the patients record
A patients ABGs include a PaO2 of 88 mmHG and a PaCO2 of 38 mmHG, and mixed
venous blood gases include a PvO2 pf 40 mmHG and PvCO2 of 46 mmHG. What do
these findings indicate?
a. impaired cardiac output
, b. unstable hemodynamics
c. inadequate delivery of oxygen
d. normal capillary oxygen-carbon dioxide exchange - Answer-normal capillary oxygen-
carbon dioxide exchange
Priority decision: A pulse oximetry monitor indicates that the patient has a drop in SpO2
from 95% to 85% over several hours. What is the FIRST action the nurse should take?
a. order stat ABGs to confirm the SpO2 with a SaO2
b. start oxygen administration by nasal cannula at 2L/min
c. check the position of the probe on the finger or earlobe
d. notify the health care provider of the change in baseline PaO2 - Answer-Check the
position of the probe on the finger or earlobe
Pulse oximetry may not be a reliable indicator of oxygen saturation in which patient?
a. patient with a fever
b. patient who is anesthetized
c. patient in hypovolemic shock
d. patient recieving oxygen therapy - Answer-patient in hypovolemic shock
A 73 y/o patient who has an SpO2 of 70%. What other assessment should the nurse
consider before making a judgment about the adequacy of the patients oxygenation?
a. what the oxygenation status is with a stress test
b. trend and rate of development of the hyperkalemia
c. comparison of patients SpO2 values with the normal values
d. Comparison of patients current vital signs with normal vital signs - Answer-
Comparison of patients current vital signs with normal vital signs
Which values indicate a need for the use of continuous oxygen therapy?
a. SpO2 of 92%; PaO2 of 65 mmHg
b. SpO2 of 95%; PaO2 of 70 mmHg
c. SpO2 of 90%; PaO2 of 60 mmHg
d. SpO2 of 88%; PaO2 55 mmHg - Answer-SpO2 of 88%; PaO2 55 mmHg
Why does a patients RR increase when there is an excess of carbon dioxide in the
blood?
a. CO2 displaces O2 on hemoglobin, leading to a decreased PaO2
b. CO2 causes an increase in the amount of hydrogen ions available in the body
c. CO2 combines with water to form carbonic acid, which lowers the pH of cerebrospinal
fluid.
d. CO2 directly stimulates chemoreceptors in the medulla to increase RR and volume -
Answer-CO2 combines with water to form carbonic acid, which lowers the pH of
cerebrospinal fluid.
Which respiratory defense mechanism is most impaired by smoking?
a. Cough reflex
b. Filtration of air
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