CCRN Questions with Answers
UPDATED 2025
A patient has had a large anterior myocardial infarction last month and developed a
ventricular aneurysm. He now has episodes of ventricular tachycardia that are not
prevented or converted with antidysrhythmic agents. An implantable cardioverter-
defibrillator (ICD) is implanted. Four days after surgery he develops ventricular
tachycardia. The ICD has delivered three shocks but has not converted the
rhythm. He is pulseless and apneic. Cardiopulmonary resuscitation is in progress.
What is the priority action now?
A.
Administer epinephrine IV.
B.
Administer amiodarone.
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,C.
Defibrillate.
D.
Reset the ICD. - ANSWER-Defibrillate
A 28-year-old woman is admitted to the critical care unit from the emergency
department with a diagnosis of asthma. Her initial arterial blood gases on a 28%
Venturi mask are as follows:
pH 7.48
PaCO2 30 mm Hg
HCO3 24 mEq/L
PaO2 64 mm Hg
Which of the following repeat arterial blood gases on 40% oxygen indicate that the
patient's condition is worsening?
A.
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,pH 7.48, PaCO2 30 mm Hg, PaO2 68 mm Hg
B.
pH 7.46, PaCO2 32 mm Hg, PaO2 61 mm Hg
C.
pH 7.40, PaCO2 40 mm Hg, PaO2 62 mm Hg
D.
pH 7.39, PaCO2 30 mm Hg, PaO2 60 mm Hg - ANSWER-C.
pH 7.40, PaCO2 40 mm Hg, PaO2 62 mm Hg
The case study shows stage II asthma. Option c shows stage III asthma. The
patient is still breathing at a fast rate, but carbon dioxide is starting to be retained
as evidenced by the increase of the PaCO2 into normal range. Options a and b are
still stage II. Option d shows a respiratory alkalosis with a metabolic acidosis
because you would have expected the pH to be in an alkalotic range with the
PaCO2 of 30.
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, A patient experiencing alcohol withdrawal syndrome describes the swirls in the
wallpaper as being worms. This is an example of which of the following?
A.
Delusion
B.
Hallucination
C.
Illusion
D.
Visual impairment - ANSWER-C.
Illusion
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UPDATED 2025
A patient has had a large anterior myocardial infarction last month and developed a
ventricular aneurysm. He now has episodes of ventricular tachycardia that are not
prevented or converted with antidysrhythmic agents. An implantable cardioverter-
defibrillator (ICD) is implanted. Four days after surgery he develops ventricular
tachycardia. The ICD has delivered three shocks but has not converted the
rhythm. He is pulseless and apneic. Cardiopulmonary resuscitation is in progress.
What is the priority action now?
A.
Administer epinephrine IV.
B.
Administer amiodarone.
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,C.
Defibrillate.
D.
Reset the ICD. - ANSWER-Defibrillate
A 28-year-old woman is admitted to the critical care unit from the emergency
department with a diagnosis of asthma. Her initial arterial blood gases on a 28%
Venturi mask are as follows:
pH 7.48
PaCO2 30 mm Hg
HCO3 24 mEq/L
PaO2 64 mm Hg
Which of the following repeat arterial blood gases on 40% oxygen indicate that the
patient's condition is worsening?
A.
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
,pH 7.48, PaCO2 30 mm Hg, PaO2 68 mm Hg
B.
pH 7.46, PaCO2 32 mm Hg, PaO2 61 mm Hg
C.
pH 7.40, PaCO2 40 mm Hg, PaO2 62 mm Hg
D.
pH 7.39, PaCO2 30 mm Hg, PaO2 60 mm Hg - ANSWER-C.
pH 7.40, PaCO2 40 mm Hg, PaO2 62 mm Hg
The case study shows stage II asthma. Option c shows stage III asthma. The
patient is still breathing at a fast rate, but carbon dioxide is starting to be retained
as evidenced by the increase of the PaCO2 into normal range. Options a and b are
still stage II. Option d shows a respiratory alkalosis with a metabolic acidosis
because you would have expected the pH to be in an alkalotic range with the
PaCO2 of 30.
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, A patient experiencing alcohol withdrawal syndrome describes the swirls in the
wallpaper as being worms. This is an example of which of the following?
A.
Delusion
B.
Hallucination
C.
Illusion
D.
Visual impairment - ANSWER-C.
Illusion
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