CCRN RESPIRATORY EXAM LATEST ACTUAL EXAM WITH UPDATED QUESTIONS AND ANSWERS WITH RATIONALES (ALREADY GRADED A+)
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Course
CCRN RESPIRATORY
Institution
CCRN RESPIRATORY
CCRN RESPIRATORY EXAM LATEST
ACTUAL EXAM WITH UPDATED QUESTIONS AND
ANSWERS WITH RATIONALES (ALREADY GRADED
A+)
The high-pressure alarm on a volume ventilator sounds. This
would not be caused by? - ANSWER-Cuff leak would cause the
low exhaled volume alarm to sound. Biting on the tube,...
A+)
The high-pressure alarm on a volume ventilator sounds. This
would not be caused by? - ANSWER-Cuff leak would cause the
low exhaled volume alarm to sound. Biting on the tube, excessive
secretions, and pneumothorax would increase the resistance to
airflow into the lungs and cause the high-pressure alarm to sound.
High pressure alarm on ventilator would go off if? - ANSWER-
Biting on tube
Excessive secretions
Pneumothorax
If oxygen delivery decreases for whatever reason, what happens
to the venous oxygen saturation (SvO2)? - ANSWER-SvO2 is
oxygen reserve. It goes down if demand is decreased or
consumption is increased.
Which of the following describes an appropriate guideline for
oxygen therapy in a chronically hypercapnic patient?
,2|Page
A.
Maintain hypoxemia but prevent hypoxia.
B.
Never administer more than 2 L/min.
C.
Administer oxygen until cyanosis is no longer evident.
D.
Achieve and maintain a functional oxygen saturation (SpO2) of
95%. - ANSWER-A
Patients with hypercapnia rely on secondary chemoreceptors
to stimulate breathing. These chemoreceptors rely on low
blood oxygen levels to stimulate breathing. Therefore
hypoxemia (blood oxygen level less than normal) is
necessary, but if blood oxygen levels go too low, then
hypoxia (decreased oxygen to the tissue) occurs.
A 65-year-old man had a thoracotomy for removal of a lung mass
yesterday. He has two chest tubes in place with a Y-connector to
one Pleur-Evac. He is on a positive pressure ventilator, but he is
,3|Page
to be weaned this morning. Which of the following will indicate
conclusively lung reexpansion after thoracotomy? - ANSWER-
Reexpansion on chest x-ray film
When the lung is reexpanded, you would expect to see no
bubbling in the water-seal chamber, no fluctuation in the
water-seal chamber, normal and equal breath sounds, and
reexpansion of the lung on chest x-ray film. The most
definitive and conclusive of these, however, is reexpansion
of the lung on chest x-ray film.
A patient is admitted to the critical care unit with acute
exacerbation of COPD caused by respiratory infection.
Temperature is 39° C, blood pressure is 150/82 mm Hg, heart
rate is 110 beats/min, and respiratory rate is 24 breaths/min.
Chest x-ray film confirms that there is left upper lobe pneumonia.
Arterial blood gases reveal the following:
pH 7.29
PaCO2 62 mm Hg
HCO3 30 mEq/L
PaO2 52 mm Hg
, 4|Page
Which assessment findings would the nurse expect over the area
of pneumonia in the left upper lobe in this patient? - ANSWER-
Dullness or flatness to percussion, bronchial breath sounds
Pneumonia acts as a solid mass on assessment as purulent
material in the alveolus consolidates. Consolidation causes
dullness to percussion and bronchial (tubular sounding)
breath sounds on auscultation.
A 65-year-old woman reports severe dyspnea 2 days after
abdominal surgery. She is transferred to the critical care unit. On
5 L of oxygen by nasal cannula, her arterial blood gases are as
follows:
pH 7.39
PaCO2 35 mm Hg
HCO3 19 mEq/L
PaO2 40 mm Hg
Arterial oxygen saturation 75%
Why does this patient have hypoxemia without hypercapnia?
A.
Because carbon dioxide is more diffusible than oxygen
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