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CCRN EXAM CRAM REVIEW
UPDATE | COMPLETE QU ESTIONS
AND ANSWERS | 100% CORRECT!!!
Question 1: 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?
- Administer epinephrine IV.
- Administer amiodarone.
- Defibrillate.
- Reset the ICD.
CORRECT ANSWER : Defibrillate
Question 2: A 28-year-old woman is admitted to the
critical care unit from the emergency department with a
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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?
- pH 7.48, PaCO2 30 mm Hg, PaO2 68 mm Hg
- pH 7.46, PaCO2 32 mm Hg, PaO2 61 mm Hg
- pH 7.40, PaCO2 40 mm Hg, PaO2 62 mm Hg
- pH 7.39, PaCO2 30 mm Hg, PaO2 60 mm Hg
CORRECT ANSWER : pH 7.40, PaCO2 40 mm Hg,
PaO2 62 mm Hg
Question 3: A patient experiencing alcohol withdrawal
syndrome describes the swirls in the wallpaper as being worms. This is an example of which of the following?
- Delusion
- Hallucination
- Illusion
- Visual impairment
CORRECT ANSWER : Illusion
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Question 4: A patient arrives in the emergency
department with multiple gunshot wounds. He requires massive transfusion for blood loss from chest and abdominal wounds. The electrocardiogram should be observed closely for changes indicative of which of the following?
- Atrioventricular block
- Hyperkalemia
- Hypercalcemia
- Hypomagnesemia
CORRECT ANSWER : Hyperkalemia
Question 5: A 65-year-old woman reports severe dyspnea
- 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?
- Because carbon dioxide is more diffusible than oxygen
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- Because carbon dioxide has more driving pressure
- Because carbon dioxide is less diffusible than oxygen
- Because carbon dioxide excretion by the kidney is
increased
CORRECT ANSWER : Because carbon dioxide is more
diffusible than oxygen
Question 6: A 55-year-old patient has headache, nuchal
rigidity, photophobia, and positive Kernig's and Brudzinski's signs. These are consistent with which of the following?
- Intracranial hemorrhage
- Subarachnoid hemorrhage
- Epidural hemorrhage
- Subdural hemorrhage
CORRECT ANSWER : Subarachnoid hemorrhage
Question 7: An extra heart sound preceding S1 is most
likely an S4 if the stethoscope's:
- diaphragm is over the apex.