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CCRN EXAM QUESTIONS & ANSWERS
ALREADY VERIFIED
Question : A patient in the ED with complaints of chest
pain. The 12-lead EKG shows ST elevation in leads V3 and V4. Occlusion of the affected coronary artery most likely would affect perfusion to which portion of the conduction system?
- Sinoatrial (SA) node
- Bachmann's bundle
- Atrioventricular (AV) node
- Bundle of His
Correct answer: LAD so D. bundle of his
Question : Which of the following is the preferred lead
for ST segment monitoring for a patient with a suspected RCA occlusion?
A.I
- aVR
C. III
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- V1
Correct answer: c. III
Question : Which of the following is not a manifestation
of hypertrophic cardiomyopathy?
- Syncope
- Murmur that increases with squatting
- Chest pain
- Sudden cardiac death
Correct answer: *B
Classic manifestations of hypertrophic cardiomyopathy are chest pain, syncope, and an aortic stenosis type of murmur that decreases when the patient is in a squatting position. The first manifestation of this condition is occasionally sudden cardiac death during exercise.
Question : In which quadrant is the mean QRS complex
axis located if the QRS complex is predominantly positive in lead I and negative in lead aVF?
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- Normal quadrant
- Left axis deviation quadrant
- Right axis deviation quadrant
- Indeterminant quadrant
Correct answer: *B
Because the positive of lead I is the left arm, if the QRS complex is upright in lead I, the mean QRS axis is to the left. Because the positive of lead aVF (a unipolar lead) is at the foot, if the QRS complex is negative in lead aVF, the mean QRS axis is upward away from the foot. This axis would be in the upper left quadrant, described as left axis deviation.
Question : A patient becomes apneic and pulseless. CPR
has been initiated, and the monitor shows asystole in two leads. Which of the following drugs would be used initially?
- Calcium gluconate
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- Atropine
- Epinephrine
- Amiodarone (Cordarone)
Correct answer: C
After CPR is initiated and an intravenous access is established, epinephrine should be given. Calcium was used in the past in asystole but is used today only for hypocalcemia, calcium channel blocker toxicity, hyperkalemia, and hypermagnesemia. Atropine is no longer recommended for asystole. Amiodarone is not indicated in asystole because asystole is the absolute absence of irritability.
Question : What is associated w/ Mitral Stenosis
- Pinkish discoloration of the cheeks
- Systolic murmur
- Widened pulse pressure
- Narrow pulse pressure