ECG Monitoring UPDATED ACTUAL
Exam Questions and CORRECT Answers
The body is a giant conductor of - CORRECT ANSWER - electrical current
EKG is a graphic display of - CORRECT ANSWER - the heart's electrical activity as
sensed by electrodes placed on the body surface
And EKG does NOT represent - CORRECT ANSWER - pump function of the heart
The EKG monitoring equipment can detect changes in electrical activity of the - CORRECT
ANSWER - myocardial cells
Changes in electrical activity the EKG can pick up include - CORRECT ANSWER -
Abnormal heart rates and rhythms
Abnormal conduction pathways
Hypertrophy or atrophy of portions of the heart
Location of ischemic or infarction of muscle
Electrical effects of meds and electrolytes
Sensors serve as - CORRECT ANSWER - receiving antennas
The input detect changes in the - CORRECT ANSWER - voltage of the cells between sites
of the electrodes
The input feeds the voltage changes into - CORRECT ANSWER - they instrument for
processing and display
Electrodes contain conductive - CORRECT ANSWER - media
,Electrodes are applied to - CORRECT ANSWER - the skin to view the heart's electrical
activity
Avoid placing electrodes over - CORRECT ANSWER - bony areas
Electrode lead records electrical activity between - CORRECT ANSWER - 2 electrodes
Each electrode records average - CORRECT ANSWER - current flow
What planes of the heart are viewed? - CORRECT ANSWER - Frontal view heart from
front of body and horizontal view of heart as if body is sliced in half horizontally
A 12 lead view shows how many angles? - CORRECT ANSWER - 12
The output display on the monitor can be effected by - CORRECT ANSWER - Paper or
oscilloscope
Paper speed
Sensitivity control
Position control
Lead selection switch
Stylus heat
The EKG paper moves at what speed - CORRECT ANSWER - 25 mm/sec
Bipolar leads utilize a - CORRECT ANSWER - single positive and a single negative
electrode between which electrical potentials are measured
Bipolar leads are typically what number leads? - CORRECT ANSWER - 1-3
, Unipolar leads utilize a - CORRECT ANSWER - combination of the other electrodes to
serve as a composite negative electrode
Unipolar leads have a - CORRECT ANSWER - single positive recording
The unipolar leads are typically which leads? - CORRECT ANSWER - augmented leads
and chest leads
If electricity flows toward the negative electrode the pattern produced on the graph paper will be
- CORRECT ANSWER - inverted
if electricity flows toward the positive electrode, the patterns produced on the graph paper will be
- CORRECT ANSWER - upright
Bipolar/Unipolar leads make no difference on the - CORRECT ANSWER - upright or
inverted patterns produced on the graph paper
Electricity moving to a positive pole will have a - CORRECT ANSWER - positive
reflection on the EKG
Electricity moving to a negative pole will have a - CORRECT ANSWER - negative
reflection on the EKG
Information from a single lead shows - CORRECT ANSWER - rate
regularity
time to conduct an impulse
A single lead cannot - CORRECT ANSWER - identify/locate and infarct
identify chamber enlargement
Exam Questions and CORRECT Answers
The body is a giant conductor of - CORRECT ANSWER - electrical current
EKG is a graphic display of - CORRECT ANSWER - the heart's electrical activity as
sensed by electrodes placed on the body surface
And EKG does NOT represent - CORRECT ANSWER - pump function of the heart
The EKG monitoring equipment can detect changes in electrical activity of the - CORRECT
ANSWER - myocardial cells
Changes in electrical activity the EKG can pick up include - CORRECT ANSWER -
Abnormal heart rates and rhythms
Abnormal conduction pathways
Hypertrophy or atrophy of portions of the heart
Location of ischemic or infarction of muscle
Electrical effects of meds and electrolytes
Sensors serve as - CORRECT ANSWER - receiving antennas
The input detect changes in the - CORRECT ANSWER - voltage of the cells between sites
of the electrodes
The input feeds the voltage changes into - CORRECT ANSWER - they instrument for
processing and display
Electrodes contain conductive - CORRECT ANSWER - media
,Electrodes are applied to - CORRECT ANSWER - the skin to view the heart's electrical
activity
Avoid placing electrodes over - CORRECT ANSWER - bony areas
Electrode lead records electrical activity between - CORRECT ANSWER - 2 electrodes
Each electrode records average - CORRECT ANSWER - current flow
What planes of the heart are viewed? - CORRECT ANSWER - Frontal view heart from
front of body and horizontal view of heart as if body is sliced in half horizontally
A 12 lead view shows how many angles? - CORRECT ANSWER - 12
The output display on the monitor can be effected by - CORRECT ANSWER - Paper or
oscilloscope
Paper speed
Sensitivity control
Position control
Lead selection switch
Stylus heat
The EKG paper moves at what speed - CORRECT ANSWER - 25 mm/sec
Bipolar leads utilize a - CORRECT ANSWER - single positive and a single negative
electrode between which electrical potentials are measured
Bipolar leads are typically what number leads? - CORRECT ANSWER - 1-3
, Unipolar leads utilize a - CORRECT ANSWER - combination of the other electrodes to
serve as a composite negative electrode
Unipolar leads have a - CORRECT ANSWER - single positive recording
The unipolar leads are typically which leads? - CORRECT ANSWER - augmented leads
and chest leads
If electricity flows toward the negative electrode the pattern produced on the graph paper will be
- CORRECT ANSWER - inverted
if electricity flows toward the positive electrode, the patterns produced on the graph paper will be
- CORRECT ANSWER - upright
Bipolar/Unipolar leads make no difference on the - CORRECT ANSWER - upright or
inverted patterns produced on the graph paper
Electricity moving to a positive pole will have a - CORRECT ANSWER - positive
reflection on the EKG
Electricity moving to a negative pole will have a - CORRECT ANSWER - negative
reflection on the EKG
Information from a single lead shows - CORRECT ANSWER - rate
regularity
time to conduct an impulse
A single lead cannot - CORRECT ANSWER - identify/locate and infarct
identify chamber enlargement
