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WorksheetsECG test 1
Total questions: 55
Worksheet time: 28mins
An electrocardiogram is a recording of the:
Electrical activity of the heart
opening and closing of the valves of the heart
force of the blood against the walls of the blood vessels
contraction and relaxation of the ventricles
blood enters the right atrium from the:
pulmonary artery
superior and inferior vena cava
pulmonary veins
aorta
right ventricle
the left atrium receives:
deoxygenated blood from the body
oxygenated blood from the left ventricle
oxygenated blood from the lungs
deoxygenated blood from the lungs
which chamber pumps the blood from the heart and out into the body?
right atrium
left atrium
right ventricle
left ventricle
what is the name given to the knot of modified myocardium that sets the pace of the heart?
medulla
AV node
SA node
Bundle branches
what structure in the heart delays the electrical impulse momentarily in order to allow the ventricles to fill completely?
Bundle of His
AV node
SA node
Cuspid Valves
What is the name of the structure in the heart that distributes the electrical impulse to the ventricles?
epicardium
endocardium
bundle of His
Purkinje fibers
what is a cardiac cycle?
contraction of the atria
one complete heartbeat
relaxation of the entire heart
contraction of the ventricles
the state in which of the muscle cells of the heart are at rest and the electrical charges are balanced is known as:
polarization
homeostasis
deflection
repolarization
discharge of electrical energy occurs during:
repolarization
negative deflection
depolarization
polarization
the muscle tissue returns to its normal resting state during:
repolarization
negative deflection
depolarization
polarization
the flat horizontal line that seperates the various waves is known as the:
segment
baseline
interval
polarization line
electrocardiograph paper is:
light-sensitive
chemically sensitive
heat-sensitive
moisture-sensitive
if the electrocardiograph is properly standardized, the standardization mark should be how high?
5mm
10mm
15mm
20mm
the standard electrocardiogram consists of how many leads?
5
7
12
15
a device placed on the skin that picks up electrical impulses given off by the heart is known as:
a lead wire
an amplifier
an electrode
an electrolyte
electrical voltages coming into into the electrocardiograph
stylus
galvanometer
amplifier
patient cable
which electrode is used as a ground reference?
right arm
right leg
left arm
left leg
An electrolyte must be used when running an ECG to:
increase conductivity of the electrical impulses coming from the heart
reduce the amount of dryness of the skin
protect the patient from shocks that are generated by the electrocardiograph
amplify the electrical impulses coming from the heart
a disposable electrode is held in place by:
a rubber strap
a vacuum cup
an adhesive backing
super glue
Leads 1,2 and 3 are the:
standard leads
chest leads
augmented leads
precordial leads
which electrodes does lead 1 use? (You may choose more than one answer)
right arm
right leg
left leg
left arm
which electrodes does lead 3 use? (You may choose more than one answer)
right arm
right leg
left leg
left arm
AVR, AVL, and AVF are known as the:
Standard leads
chest leads
augmented leads
bipolar leads
electrocardiograms are normally recorded with the paper moving at a speed of:
25mm/second
twice the normal standard
one-half standard
50mm/second
chest lead V2 located at the:
fourth intercostal space at the left margin of the sternum
fifth intercostal space at the junction of the left midclavicular line
fifth intercostal space at the left margin of the sternum
fourth intercostal space at the right margin of the sternum
where is chest lead V5 located?
Midway between V4 and V6
At the fifth intercostal space at the junction of the left midclavicular line
At the horizontal level of V4 at the left anterior axillary line
at the horizontal level of V4 at the left midaxillary line
which of the following is a characteristic of a three-channel electrocardiogram?
the tracing is recorded on 8 by 11 inch paper
three leads are recorded at one time
all of the chest leads are positioned before running the ECG
it takes a very short period of time to run the recording
all of the above
what are artifacts?
the marking code recording by the ECG to indicate which lead is being run.
additional electrical activity picked up by the electrocardiograph
a type of standardization mark
rare objects uncovered in ancient Peru
which of the following artifacts appears as small, straight, spiked lines that are consistent in nature?
muscle
wandering baseline
alternating current
stylus thrashing
all of the following may result in muscle artifacts except:
patient discomfort
an apprehensive patient
improper grounding of the electrocardiograph
patient coughing or talking
which of the following may be the cause of alternating current artifacts?
dirty or corroded electrodes
lead wires not following body contour
an unequal amount of electrolyte on each electrode
parkinson's disease
which of the following occurs if the metal tip of a lead wire becomes detached from an electrode?
alternating current artifacts
muscle artifacts
wandering baseline
interrupted baseline
which of the following represent an error in technique when running an electrocardiogram?
positioning the machine so that the power cord runs under the patient table
working on the left side of the patient
instructing the patient to lie still and not to talk during the procedure
positioning the limb electrodes on the fleshy part of the upper arms and lower legs
holter monitor electrocardiography is used to:
detect cardiac arrhythmias that are intermittent in nature
Assess the functioning of an artificial pacemaker
Evaluate patients with unexplained syncope
assess the effectiveness of an antiarrhythmic medications
All of the above
Which of the following is a guideline for wearing a Holter monitor?
do not consume alcohol or caffeinated beverages
limit physical activity
do not use a wool blanket for sleeping
do not shower, bathe, or swim
all of the above
which of the following should be recorded in the Holter monitor diary notebook?
meals
emotional states
bowel movements
sleep periods
all of the above
touching or moving electrodes during the Holter monitoring period may cause:
malfunctioning of the recorder
drying out of the electrolyte
abnormal waveforms
artifacts
all of the above
what is the term used to refer to an electrocardiogram that is within normal limits?
sinus arrhythmia
baseline recording
normal sinus rhythm
WNL
The normal heart rate rages from:
60 - 100 beats per minute
80 - 90 beats per minute
50 - 120 beats per minute
16 - 20 respirations per minute
which of the following is not a characteristic of paroxysmal atrial tachycardia (PAT)?
the P waves will appear as saw-toothed spikes on the recording
it has a sudden onset and termination
the heart rate increases
the patient may experience weakness and acute apprehension
which of the following is considered the most serious cardiac arrhythmia?
ventricular flutter
atrial flutter
ventricular tachycardia
atrial fibrillation
ventricular fibrillation
What is the horizontal axis on the ECG graph measuring?
voltage
BMP
Time
Inversions
What type of blood does the left ventricle receive?
oxygenated blood from the lungs
oxygenated blood from the left atrium
deoxygenated blood from the body
deoxygenated blood from the left atrium
Which chamber pumps the deoxygenated blood from the heart to the lungs?
right ventricle
left ventricle
right atrium
left atrium
What part of the heart stimulates the ventricules to contract when it receives the electrical signal?
AV node
Bundle branches
Purkinje fibers
Bundle of His
What happens when the metal clip of the lead wire becomes detached from an electrode?
wandering baseline
alternating current artifacts
muscle artifacts
interrupted baseline
A patient has a resting heart rate of 100 BPM. What medical term is used to describe this condition?
cardio embolism
myocardial infarction
tachycardia
bradycardia
What does 'a' stand for in leads aVR, aVC and aVF?
Augmented
Apple
Advance
Acute
An ECG will be ordered on a patient who is experiencing:
indigestion
shortness of breath
cramps in the calf
headaches
what is unique about the pulmonary artery?
thickest walled artery in the body
thinnest walled artery in body
only artery that carries oxygenated blood
only artery that carries deoxygenated blood
How much time is represented by the red highlighted square in the provided image during the ECG tracing?
0.40 sec
0.08 sec
0.20 sec
0.04 sec
What is the intrinsic rate of the sinoatrial node?
20-40 bpm
40-60 bpm
60-100 bpm
100-120 bpm
When do somatic tremors show up on the ECG tracing?
increased speed of paper
lose electrode
improper grounding
patient is moving
On small 1mm * 1mm block in the ECG graph paper represents 0.04 sec time and 0.1 mV amplitude
true
false
