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CCI CRAT Exam Practice Test 3 questions and answers.
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CCI CRAT Exam Practice Test 3A beat that occurs prior to a normal beat, causes an irregular rhythm, and is caused by an
irritable location within the AV junction acting as a pacemaker, is known as which of the
following? - correct answer-Premature junctional contraction
A premature junctional contraction is caused by an irritable location within the AV junction
acting as a pacemaker and firing either prematurely or out of sequence. The premature
junctional contraction is an ectopic beat that occurs before a normal beat and causes an
irregular rhythm. The atria are depolarized in retrograde fashion, and the ventricles are
depolarized normally.
A junctional escape rhythm shows a regular rhythm of which of the following? - correct
answer-40-60 bpm
A junctional escape rhythm shows a regular rhythm of 40-60 bpm on a rhythm strip. There
will be inverted P waves in leads that would normally have normal P waves. The P waves
may occur before, after, or during the QRS complex. The PR interval is less than 0.12
second and is measurable only if the P wave is prior to the QRS complex. The rest of the
waveform should appear normal.
Report a problem with this question
A waveform that is in an upward direction would be considered which of the following? -
correct answer-Positive
A waveform that is in an upward direction would be considered positive. A waveform is the
movement that is away from the isoelectric line. This waveform can deflect up or down. If the
waveform deflects upward, it would be considered positive
According to the image of graph paper which is used for EKG tracing shown above, the
amplitude of the waveforms are determined by the vertical boxes. Each large box in the
above graph would equal which of the following? - correct answer-5 mm
Each large square on this graph paper would equal 5 mm = 0.5 mv.Each small square on
this graph paper would equal 1 mm = 0.1 mv.
All but which of the following symptoms might accompany chest pain? - correct
answer-Abdominal pain
The symptoms that typically accompany chest pain might include:
Nausea/vomiting
Dizziness
Sweating
Heart palpitations
All of the following might be considered limb leads except? - correct answer-V6
, The limb leads would include:
Lead I
Lead II
Lead III
AVF
AVL
AVR
Alternating current interference can be caused by all of the following except? - correct
answer-Too little electrode gel
Alternating current interference can be caused by the following:
Crossed lead wires
Improper grounding of the ECG machine
Other equipment in the area radiating electrical energy
An EKG would be considered which of the following? - correct answer-A way to record the
small amount of voltage of the heart.
An EKG would be considered a way to record the small amount of voltage of the heart.
These signals are transmitted through the chest to the skin where they are picked up and
recorded.
Cardiac valves which have half-mooned shaped cusps would be considered which of the
following? - correct answer-Pulmonic valves
Semilunar valves would include the aortic and pulmonic. The semilunar valves would be
considered the valves that have cusps which have half-mooned shapes.
Complications from failure to capture could include all of the following except? - correct
answer-Liver failure
Complications from failure to capture could include the following:Increased stimulation
threshold because of such things as medications and/or electrolyte imbalance.A fracture of
the pacing lead wire.Perforation of the myocardium by a lead wireDisplacement of a pacing
lead wire- (common cause)
Deoxygenated blood returns to the heart through the inferior and superior vena cava and
empties into which of the following? - correct answer-Right atrium
Deoxygenated blood returns to the heart through the inferior and superior vena cava and
empties into the right atrium. From the right atrium, the blood goes through the tricuspid
valve into the right ventricle.
During diastole, when the ventricles relax, it allows for which of the following to occur? -
correct answer-Allows the atria to create space for receiving more blood
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