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?
-The right atrium
-The left ventricle
-The right ventricle
-The lungs Correct Ans-The left ventricle
Which of the following age groups would be most likely to experience fibrosis in the
conduction system?
-21-30 years of age
-Infants
-The elderly
-40-60 years of age Correct Ans-The elderly
Fibrosis can occur at any age, but is most common with the elderly. They have a higher
incidence of AV block which can be caused by fibrosis in the conduction system
, CCT EXAM PRACTICE (EE)-QUESTIONS & ANSWERS
A dropped beat indicates what? (Skipped QRS wave)
____ degree heart block, type __ Correct Ans-Second degree heart block, type I
With 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 Correct Ans-All of the above
Which of the following would be the main purpose of the heart valves?
-The prevention of back-flow of blood
-They assure that there is a uni-directional flow of blood through the heart
-Both A and B
-None of the above Correct Ans-Both A and B
Which of the following would be considered correct regarding the grid paper that is used for
an ECG?
, CCT EXAM PRACTICE (EE)-QUESTIONS & ANSWERS
-The grid paper consist of horizontal lines
-The grid paper is not heat sensitive
-The grid paper consist of vertical lines
-Both A and C Correct Ans-Both A and C
The grid paper that is used for an ECG test:
Consists of horizontal lines
Consists of vertical lines
Is heat sensitive
Is used for cardiac monitoring and ECG's
If a patient's heart becomes softened, it could cause changes in the electrocardiogram. Which
of the following terms would be considered correct for a softening of the heart?
-Cardiomegaly
-Cardiopathy
-Cardiomalacia
-None of the above Correct Ans-Cardiomalacia
Cardiomegaly is an enlarged heart
Cardiopathy is any heart disease
Cardiomalacia is a softening of the heart
, CCT EXAM PRACTICE (EE)-QUESTIONS & ANSWERS
Potential causes of PVC's can be which of the following conditions?
-Stimulants such as cocaine, coffee, nicotine or amphetamines
-Increased catecholamines
-Hypoxia
-All of the above Correct Ans-All of the above
Some of the causes would include:
Stimulants such as cocaine, coffee, nicotine or amphetamines
Increased catecholamines
Hypoxia
Heightened emotions
AMI
CHF
Digitalis
Increased vagal tones
Acidosis
Hypokalemia
Hypomagnesemia
Ischemia
Open heart surgery
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