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CCRN PRACTICE QUESTIONS AND 100% CORRECT ANSWERS
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CCRN PRACTICE QUESTIONS AND 100% CORRECT ANSWERSA 62-year-old male presents with chest pain to the hospital. An electrocardiogram was
done which shows ST segment elevation in leads V1 to V4 with T wave inversion.
Aspirin, morphine titration, and nitroglycerin infusion were given for chest pain. On the
fifth day of myocardial infarction, the patient acutely develops a loud holosystolic
murmur at the lower left sternal border with chest pain and hypotension. A Swan-Ganz
catheter is inserted. Which of the following would be observed in this patient?
A.Increased venous oxygen saturation (SvO2)
B.Decreased pulmonary artery occlusive pressure (PAOP)
C.Decreased cardiac output
D.Increased systolic blood pressure (BP) - Answer.
A patient presents to the emergency department with complaints of chest pain. The
12-lead electrocardiogram demonstrates ST segment elevation in leads V3 and V4.
Occlusion of the involved coronary artery would most likely result in impaired perfusion
to what part of the conduction system?
A.Sinoatrial (SA) node
B.Bachmann's bundle
C.Atrioventricular (AV) node
D.Bundle of His Answer
Which of the following would NOT be expected in a postoperative cardiac surgery
patient with a cardiac tamponade?
A.Muffled heart sounds
B.Increase in drainage from the mediastinal tube
C.Jugular venous distention (JVD)
, D.Pulsus paradoxus - Answer
A patient with acute anterior myocardial infarction develops a third-degree
atrioventricular block with a ventricular escape rhythm with a rate of 38 beats/min. What
would be the best immediate intervention?
A.Atropine 1 mg
B.Transcutaneous pacemaker
C.Transvenous pacemaker
D.Epinephrine 1 mg - Answer
An aortic tear commonly is associated with which of the following?
A.
Acceleration-deceleration injury
B.
Barotrauma
C.
Penetrating injury of the chest wall
D.
Blunt force injury to the chest wall - Answer
Which of the following is the preferred lead for ST segment monitoring for a patient with
a suspected right coronary artery occlusion?
A.I
B. aVR
, C. III
D. V1 - Answer
A 55-year-old man with a long history of alcoholism continues to drink alcohol and now
has alcoholic cardiomyopa-thy, a form of dilated cardiomyopa-thy. Which of the
following statements about dilated cardiomyopa-thy is incorrect?
A. It was previously called idiopathic hypertrophic subaortic stenosis.
B. It causes gross enlargement of the heart.
C. It interferes with systolic ejection function.
D. It causes the signs and symptoms of heart failure. - Answer
A 72-year-old male came to the emergency department following 4 hours of substernal
pain radiating to the left arm. He had a history of 100 pack-years of cigarette smoking,
chronic obstructive pulmonary disease, and intermittent claudication. His
electrocardiogram on admission shows sinus tachycardia with a rate of 120 beats/min
and ST segment elevation in leads I, AVL, and V3 to V6. Vital signs include blood
pressure, 150/84 mm Hg; respiratory rate, 15 breaths/min; functional oxygen saturation
(SpO2), 95%; and temperature, 38.3° C (100.9° F). Which of the following treatments
would not be indicated for this patient at this time?
A.
Morphine and nitroglycerin
B.
Aspirin and fibrinolytic drugs
C.
, Beta-blockers
D.
Lidocaine - Answer
Which of the following describes the pulse pressure of a patient with aortic
regurgitation?
A.
30-40 mm Hg
B.
Less than 30 mm Hg
C.
More than 40 mm Hg
D.
Varies with phase of respiratory cycle - Answer
Which of the following is not a manifestation of hypertrophic cardiomyopathy?
A.
Syncope
B.
Murmur that increases with squatting
C.
Chest pain
D.
Sudden cardiac death - Answer *B
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