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 Cardiac Surgery Certification (CSC) 
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Q:1-Which leads on the EKG view the electrical activity of the heart on the horizontal plane?
Mark one answer:
Leads I through III
Bipolar leads
Augmented unipolar leads
Unipolar precordial leads

Q:2-What is the condition called when the SA node fails to depolarize the atria?
Mark one answer:
Sinus pause
Cardiac failure
Atrial flutter
Hypersensitization

Q:3-What is a Wenckebach AV block?
Mark one answer:
A delay in the conduction of the impulse through the AV junction
Increasingly difficult AV node conduction showing a P wave not followed by a QRS complex on EKG
A delayed AV conduction at the bundle braches
No conduction of impulse from the atria to the ventricles

Q:4-Which atrioventricular block does not impair cardiac function?
Mark one answer:
Hemiblock
First-degree block
Mobitz I block
Right bundle branch block

Q:5-What are some causes of a third-degree AV block?
Mark one answer:
Certain drugs, such as quinidine and atropine
Age, digitalis intoxication, or myocardial infarction
Heart disease and damage from uncontrolled diabetes mellitus
Hypertension, coronary artery disease, and cardiomyopathy

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Q:6-In particular, which type of atrioventricular block patient would be a good candidate for the implantation of a pacemaker?
Mark one answer:
Hemiblocks
Transmural ischemic blocks
Posterior fascicular block
Third-degree block

Q:7-What condition may be indicated very early by an EKG with ST elevations, or tall, upright T waves?
Mark one answer:
Sudden cardiac death
Myocardial ischemia
Transmural myocardial infarction
Coronary artery disease

Q:8-Which electrolyte abnormality will show shortened ventricular repolarization and shortened QT intervals on EKG?
Mark one answer:
Hypercalcemia
Hypocalcemia
Hyperkalemia
Hypokalemia

Q:9-What does the horizontal aspect of the EKG measure?
Mark one answer:
Voltage
Duration
Watts
Waveforms

Q:10-Which one of the following requires a median sternotomy?
Mark one answer:
Double aortic arch
Right aortic arch with aberrant subclavian artery
Left aortic arch with right ligamentum arteriosus
Pulmonary artery sling

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