Test Bank Complete_ ECGs Made Easy 7th Edition,
(2022) Barbara J Aehlert (Author) All Chapters 1-10;
With Multiple Choice| True/False| Completion|
Matching| Short Answer| Essay| Questions
Electrocardiography - ANSWERa painless, safe procedure and is the test most
frequently used for the diagnosis of heart disease in the ambulatory care setting
What is the role of the medical assistant in electrocardiography? - ANSWERThe MA
must be able to recognize problems with the recording and make appropriate
corrections so that the physician has a clear record of the patient's cardiac activity.
The goal is to obtain the most accurate ECG possible.
What is the average length of time for a healthy adult cardiac cycle? - ANSWER0.8
seconds
The electrocardiograph records both the _________ of the electrical impulses and
the ______ _____ it takes for each part of the cardiac cycle to occur. -
ANSWERintensity; actual time
What does an ECG measure? - ANSWERIt measures the electrical conductive
impulses of the heart muscle, allowing the physician to see any disturbances or
disruptions in normal heart activity.
Systole - ANSWERatria and ventricles contract and empty of blood
Diastole - ANSWERRelaxation phase of heart, chambers refill with blood
How many phases are in a cardiac cycle? - ANSWERtwo
What does the cardiac cycle include? - ANSWERall events that occur in the heart
during one single heartbeat
What controls the rate of heart contractions? and how? - ANSWERThe sinoatrial (SA)
node controls the rate of heart contractions by initiating electrical impulses 60 to
100 times per minute.
What is an arrhythmia and what can cause it? - ANSWERAn irregular cardiac rhythm
is called an arrhythmia. Conditions that interrupt the conduction pathway, SA node
to AV node to bundle of His to right and left bundle branches, can cause arrhythmias
Polarization - ANSWERresting state of the myocardial wall; no electrical activity
occurs in this phase
, How is polarization recorded on an ECG strip? - ANSWERstraight line
Depolarization - ANSWERcontraction of stimulated heart muscle
Repolarization - ANSWERheart muscle cells must return to a resting state
Electrocardiograph records what? - ANSWERa series of waves, or deflections,
corresponding to part of cardiac cycle
Describe the ECG cycle - ANSWERThe normal ECG cycle consists of waveforms that
are labeled the P wave, the Q wave, the R wave, the S wave, and the T wave. The Q,
R, and S waves usually are grouped together; this is called the QRS complex. One
entire cardiac cycle can be called the PQRST complex
Why is atrial repolarization not recorded on the ECG strip? - ANSWERIts electrical
impulse is small and is hidden in the QRS complex.
P wave occurs during ... - ANSWERa contraction of the atria and shows beginning of
cardiac depolarization
What does a P wave look like on an ECG strip? - ANSWERFirst deflection from the
baseline, typically smooth and rounded, and occur before each QRS complex
PR segment is the .... - ANSWERReturn to the baseline after atrial contraction
PR interval is ... - ANSWERtime from the beginning of atrial contraction to beginning
of ventricular contraction
The PR interval contains what? - ANSWERthe P wave (depolarization of the atria) and
the spread of the electrical impulse through the AV node, bundle of His, right and
left bundle branches, and Purkinje fibers.
QRS complex shows what? - ANSWERcontraction of the ventricles and reflects the
completion of cardiac depolarization
Compare the QRS complex and P wave. - ANSWERQRS complex is recorded as a
much more significant electrical activity than a P wave
What does the ST segment reflect? - ANSWERST segment reflects the time between
the end of ventricular contraction and the beginning of ventricular recovery
What does T wave represent? - ANSWERVentricular recovery
QT interval is the time between ... - ANSWERBeginning of QRS complex through T
wave
(2022) Barbara J Aehlert (Author) All Chapters 1-10;
With Multiple Choice| True/False| Completion|
Matching| Short Answer| Essay| Questions
Electrocardiography - ANSWERa painless, safe procedure and is the test most
frequently used for the diagnosis of heart disease in the ambulatory care setting
What is the role of the medical assistant in electrocardiography? - ANSWERThe MA
must be able to recognize problems with the recording and make appropriate
corrections so that the physician has a clear record of the patient's cardiac activity.
The goal is to obtain the most accurate ECG possible.
What is the average length of time for a healthy adult cardiac cycle? - ANSWER0.8
seconds
The electrocardiograph records both the _________ of the electrical impulses and
the ______ _____ it takes for each part of the cardiac cycle to occur. -
ANSWERintensity; actual time
What does an ECG measure? - ANSWERIt measures the electrical conductive
impulses of the heart muscle, allowing the physician to see any disturbances or
disruptions in normal heart activity.
Systole - ANSWERatria and ventricles contract and empty of blood
Diastole - ANSWERRelaxation phase of heart, chambers refill with blood
How many phases are in a cardiac cycle? - ANSWERtwo
What does the cardiac cycle include? - ANSWERall events that occur in the heart
during one single heartbeat
What controls the rate of heart contractions? and how? - ANSWERThe sinoatrial (SA)
node controls the rate of heart contractions by initiating electrical impulses 60 to
100 times per minute.
What is an arrhythmia and what can cause it? - ANSWERAn irregular cardiac rhythm
is called an arrhythmia. Conditions that interrupt the conduction pathway, SA node
to AV node to bundle of His to right and left bundle branches, can cause arrhythmias
Polarization - ANSWERresting state of the myocardial wall; no electrical activity
occurs in this phase
, How is polarization recorded on an ECG strip? - ANSWERstraight line
Depolarization - ANSWERcontraction of stimulated heart muscle
Repolarization - ANSWERheart muscle cells must return to a resting state
Electrocardiograph records what? - ANSWERa series of waves, or deflections,
corresponding to part of cardiac cycle
Describe the ECG cycle - ANSWERThe normal ECG cycle consists of waveforms that
are labeled the P wave, the Q wave, the R wave, the S wave, and the T wave. The Q,
R, and S waves usually are grouped together; this is called the QRS complex. One
entire cardiac cycle can be called the PQRST complex
Why is atrial repolarization not recorded on the ECG strip? - ANSWERIts electrical
impulse is small and is hidden in the QRS complex.
P wave occurs during ... - ANSWERa contraction of the atria and shows beginning of
cardiac depolarization
What does a P wave look like on an ECG strip? - ANSWERFirst deflection from the
baseline, typically smooth and rounded, and occur before each QRS complex
PR segment is the .... - ANSWERReturn to the baseline after atrial contraction
PR interval is ... - ANSWERtime from the beginning of atrial contraction to beginning
of ventricular contraction
The PR interval contains what? - ANSWERthe P wave (depolarization of the atria) and
the spread of the electrical impulse through the AV node, bundle of His, right and
left bundle branches, and Purkinje fibers.
QRS complex shows what? - ANSWERcontraction of the ventricles and reflects the
completion of cardiac depolarization
Compare the QRS complex and P wave. - ANSWERQRS complex is recorded as a
much more significant electrical activity than a P wave
What does the ST segment reflect? - ANSWERST segment reflects the time between
the end of ventricular contraction and the beginning of ventricular recovery
What does T wave represent? - ANSWERVentricular recovery
QT interval is the time between ... - ANSWERBeginning of QRS complex through T
wave
