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CCT EXAM PRACTICE (EE) QUESTIONS AND ANSWERS
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CCT EXAM PRACTICE (EE) QUESTIONS AND ANSWERSWhich of the following leads would help to record the electrical activity in the heart's
horizontal plane?
-Bipolar lead
-12-lead ECG
-Precordial leads
-Unipolar leads - Answer Precordial leads
This provides a transverse view through the middle of the heart which divides it into
upper and lower portions.
Of the electrocardiogram waves, which would be considered the first deflection after
the diastole that is produced because of the atrial depolarization?
-T wave
-S wave
-Q wave
P wave
Answer P wave
This is because of the depolarization of the atria in the heart.
Which one of the following reflects the intrinsic firing rate in the Bundle of His?
40 to 60 beats per minute
,30 to 60 beats per minute
60 to 80 beats per minute
80 to 100 beats per minute
Answer 40-60 beats per minute
The Bundle of His is found at the superior portion of the interventricular septum. The
Bundle of His is actually a continuation pathway of the electrical impulses that leave out
of the SA node.
If a patient is experiencing low blood pressure, which of the following terms would you
use?
Hyper tension
Hypoxemia
Hypotension
Hypoplastic
Answer Hypotension
Hypertension: high blood pressure
Hypoxemia: low oxygen levels in the blood
Hypoplastic: smaller than normal because of improper development before birth
Hypotension: abnormally low blood pressure
Which of the following is the direction that the electrical activity picked up by the aVR
lead runs from?
The center of the heart to the right arm
The center of the heart to the left leg
,The center of the heart to the left arm
-Left arm to left leg The center of the heart towards right arm
aVF: center of the heart to the left leg
aVL: center of the heart to the left arm
aVR: center of the heart to the right arm
Left arm to the left leg: lead III
What is the duration of Q wave, should be less than _________ seconds?
-0.30 seconds
-0.20 seconds
-0.10 seconds
-0.04 seconds - Resposta 0.04 seconds
The Q wave should have a duration of less than 0.04 seconds. It is the first negative
component of the QRS complex and if it lengthens, it could be indicative of a myocardial
infarction
When the mitral valve opens, the blood flows from the left atrium to which of the
following?
-Direita atrium
-Esquerda ventricle
-Direita ventricle
-Pulmons - Resposta The left ventricle
Which of the following age groups would most probably present with fibrosis in the
conduction system?
-21-30 years of age
-Infants
, -The elderly
-40-60 years of age - Answer The elderly
Fibrosis can affect any age, but it is more prevalent in older adults. They have a higher
incidence of AV block which can be brought about by fibrosis in the conduction system
A dropped beat indicates what? (Skipped QRS wave)
____ degree heart block, type __ - Answer Second degree heart block, type I
This rhythm the PR interval will lengthen in each of the intervals until one QRS
completely disappears.
Which of the following characteristics would a good ECG technician have?
-They should be reliable
-They should have mechanical aptitude
-They should be able to follow directions
-All of the above - Answer All of the above
Which would be the main role of the heart valves?
-The preventing the back-flow of blood
-They ensure that there is a uni-directional flow of blood through the heart
-Both A and B
-Neither of the above - Answer Both A and B
Which of the following would be correct for the grid paper used for an ECG?
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