EKG
Worksheet
for Nursing Students
EKG Worksheet
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By purchasing this material, you agree to the following terms and conditions: you agree that this material and all other media produced by
NurseInTheMaking LLC are simply guides and should not be used over and above your course material and teacher instruction in nursing school.
When details contained within these guides and other media differ, you will defer to your nursing school’s faculty/staff instruction. Hospitals and
universities may differ on lab values; you will defer to your hospital or nursing school’s faculty/staff instruction. These guides and other media
created by NurseInTheMaking LLC are not intended to be used as medical advice or clinical practice; they are for educational use only. You also agree
to not distribute or share these materials under any circumstances; they are for personal use only.
© 2023 NurseInTheMaking LLC. All content is property of NurseInTheMaking LLC and www.anurseinthemaking.com. Replication and distribution of
this material is prohibited by law. All digital products (PDF files, ebooks, resources, and all online content) are subject to copyright protection. Each
product sold is licensed to an individual user and customers are not allowed to distribute, copy, share, or transfer the products to
any other individual or entity, they are for personal use only. Fines of up to $10,000 may apply and individuals will be reported to
the BRN and their school of nursing.
EKG Waveform
Fill out the EKG waveform:
What is happening during:
P-wave
PR interval
QRS interval
T-wave
Depolarization
Repolarization
Depolarization
Repolarization
Depolarization
Repolarization
Define:
Depolarization
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Repolarization
EKG Waveform
answer
key
Fill out the EKG waveform:
R
T
P
Q
S
PR Interval
QT Interval
QRS
Complex
What is happening during:
P-wave
Atrial contracting
PR interval
Repolarization
The time between atrial depolarization & ventricular depolarization
QRS interval
T-wave
Depolarization
Ventricle contracting
Ventricle relaxing
Depolarization
Repolarization
Depolarization
Repolarization
Define:
Depolarization
DEpolarization = DEcompressing
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Repolarization
repolarization =
• relaxing
• repolarizing
• refilling with blood
EKGs
Numbers to know:
Basic Rhythms
Normal sinus
Tachycardia
Bradycardia
Heart Rhythm Measurements
PR Interval
?
1 sec.
QRS Complex
QT Interval
EKG strip boxes
1 small box =
1 large box =
?
0.04
sec.
5 large boxes =
?
0.20 sec.
Place the electrodes:
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EKGs
answer
key
Numbers to know:
Basic Rhythms
Normal sinus
60 – 100 bpm sinus
Tachycardia
> 100 bpm sinus
Bradycardia
< 60 bpm
Heart Rhythm Measurements
PR Interval
0.12– 0.20 seconds
QRS Complex
QT Interval
1
second
1 sec.
0.06 – 0.12 seconds
< 0.40 seconds
EKG strip boxes
1 small box =
0.04 seconds
1 large box =
0.20 seconds
5 large boxes =
0.04
1 second
0.04
sec.
seconds
0.20sec.
0.20
seconds
Place the electrodes:
White on right
Smoke over FIRE
Clouds over GRASS
Chocolate in my heart
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Interpret the rhythm
Rhythm Interpretation
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Key Factors
Interpret the rhythm
Rhythm Interpretation
–
Ventricular Tachycardia
Looks like a tombstone
appearance
(this can be a deadly rhythm)
Sinus Tachycardia
Normal rhythm,
just a fast rate
Ventricular Fibrillation
(V-fib)
Small fibbing waves
Atrial Fibrillation
(A-fib)
Irregular R-R intervals!
Premature
Ventricular Contraction
(PVCs)
PREMATURE conduction
of a QRS complex
Asystole
Flat line
Atrial Flutter (A-flutter)
Sawtooth appearance
between R-R intervals
Sinus Brady
Normal rhythm,
just a slow rate
Supraventricular Tachycardia
(SVT)
It looks like S's
for Supraventricular
sawtooth
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Key Factors
Normal Sinus Rhythm
looks like tombstones
PVC
answer
key
Heart Blocks
Match the heart block to the correct name:
1st degree
2nd degree (Wenckebach or Mobitz Type I)
2nd degree (Mobitz Type II)
3rd degree (Complete heart block)
Match the strip to the correct electrolyte imbalance:
Hypokalemia
Hypocalcemia
Hypercalcemia
Hyperkalemia
Hypomagnesemia
Hypermagnesemia
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Heart Blocks
answer
key
Match the heart block to the correct name:
1st degree
If the R is far from the p, than you have First degree
2nd degree (Wenckebach or Mobitz Type I)
P waves get longer, longer, & DROP, its a case of WENCKEBACH
2nd degree (Mobitz Type II)
If some R’s don’t get through, prepare to pace that Mobitz II
3rd degree (Complete heart block)
If P’s & Q’s don't agree, than you have a Third Degree
Match the strip to the correct electrolyte imbalance:
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Hypokalemia
hypokalemia think Low (flattened or inversion)
Hypocalcemia
QT prolongation
Hypercalcemia
Shortened ST segment
Hyperkalemia
hyperkalemia think high (peaked)
Hypomagnesemia
Tall T wave & ST depression
Hypermagnesemia
Prolonged PR interval & a wide QRS
Nstemi vs. STEMI
STEMI
st segment
biomarkers
blockage
stands for
Which is which?
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NSTEMI
STEMI
NSTEMI
STEMI
NSTEMI
ST Elevation Myocardial Infarction
Non-ST Elevation Myocardial Infarction
Complete
Blockage
Incomplete
(partial)
Blockage
biomarkers
blockage
stands for
Nstemi vs. STEMI
answer
key
st segment
ST segment is ELEVATED
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ST segment is NOT elevated
ST depression or T inversion
ekg basics
Fill in the blank & True/False:
1.
patient at risk for blood clots.
&
place the
is a racing pulse which originates from above the ventricle.
2.
3.
PEA stands for
4.
Irregular and false readings caused by patient or lead movement is called
5. NSR stands for
6. The
.
.
node is the primary pacemaker of the heart.
7. TRUE / FALSE Ventricular Tachycardia (VT) patients can have a pulse or no pulse.
8. TRUE / FALSE A myocardial infarction will always present with ST elevation.
9. TRUE / FALSE A bundle branch block (BBB) is not able to be detected by an EKG.
10. TRUE / FALSE An implanted pacemaker is a contraindication to performing an EKG.
© 2023 NurseInTheMaking LLC
.
ekg basics
answer
key
Fill in the blank & True/False:
1.
Atrial Fibrillation (A-fib)
patient at risk for blood clots.
2.
&
Both cause pooling of blood in the atria = risk for clots
Supraventricular tachycardia
is a racing pulse which originates from above the ventricle.
3.
PEA stands for
4.
Irregular and false readings caused by patient or lead movement is called
5. NSR stands for
6. The
pulseless electrical activity
Normal Sinus Rhythm
sinoatrial node (SA node)
.
artifact
.
node is the primary pacemaker of the heart.
7. TRUE / FALSE Ventricular Tachycardia (VT) patients can have a pulse or no pulse.
8. TRUE / FALSE A myocardial infarction will always present with ST elevation.
9. TRUE / FALSE A bundle branch block (BBB) is not able to be detected by an EKG.
10. TRUE / FALSE An implanted pacemaker is a contraindication to performing an EKG.
© 2023 NurseInTheMaking LLC
place the
Atrial Flutter
.
treatment
Match the term with the associated key point:
Atrial Fibrillation
A. Can be caused by certain psychiatric medications or
Sinus bradycardia
B. IV amiodarone, IV lidocaine
Sinus tachycardia
Complete heart block
Supraventricular tachycardia
STEMI
Prolonged QT interval
PVCs
Peaked T-Waves
Artifact
Ventricular fibrillation
ondansetron
C. Morphine, aspirin, oxygen, nitroglycerin & cardiac
catheterization
D. Appears as twisting patterns; treated with magnesium
sulfate
E. Rearrange and stabilize leads, encourage patient to
remain as still as possible
F. Assess serum K+ and troponins; seen with
hyperkalemia or MI
G. Recommended treatment is placement of pacemaker
H. Often seen in endurance athletes at baseline
I. Begin CPR & Code Blue protocol
J. Caused by anxiety & stimulants; may be treated with
beta blockers
K. Treated with cardioversion, heparin therapy
L. Carotid massage, IV adenosine, beta blockers
M. Infrequent occurrence not always concerning; frequent
occurrence may lead to weakened cardiac muscle
Torsades de pointes
N. Irregular rhythm which begins and may resolve by itself
within 1 week (intermittent)
Paroxysmal atrial fibrillation
Recurrent ventricular
tachycardia with pulse
Pulseless ventricular tachycardia
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O. Treat with defibrillation
treatment
answer
key
Match the term with the associated key point:
Atrial Fibrillation
k
A. Can be caused by certain psychiatric medications or
Sinus bradycardia
h
B. IV amiodarone, IV lidocaine
Sinus tachycardia
j
Complete heart block
g
Supraventricular tachycardia
l
STEMI
c
Prolonged QT interval
a
PVCs
m
Peaked T-Waves
f
Artifact
e
Ventricular fibrillation
o
ondansetron
C. Morphine, aspirin, oxygen, nitroglycerin & cardiac
catheterization
D. Appears as twisting patterns; treated with magnesium
sulfate
E. Rearrange and stabilize leads, encourage patient to
remain as still as possible
F. Assess serum K+ and troponins; seen with
hyperkalemia or MI
G. Recommended treatment is placement of pacemaker
H. Often seen in endurance athletes at baseline
I. Begin CPR & Code Blue protocol
J. Caused by anxiety & stimulants; may be treated with
beta blockers
K. Treated with cardioversion, heparin therapy
L. Carotid massage, IV adenosine, beta blockers
M. Infrequent occurrence not always concerning; frequent
occurrence may lead to weakened cardiac muscle
Torsades de pointes
d
N. Irregular rhythm which begins and may resolve by itself
within 1 week (intermittent)
Paroxysmal atrial fibrillation
n
Recurrent ventricular
tachycardia with pulse
b
Pulseless ventricular tachycardia
i
© 2023 NurseInTheMaking LLC
O. Treat with defibrillation
Dear future nurse,
You may be stressed, you may feel tired,
and you may want to give up. Nursing school is
hard, there's no doubt about it. Everyone cries,
everyone has meltdowns, and there will be
moments you don't feel qualified for the task at
hand. But take heart, the challenge only makes
you stronger. Put in the work, show up on time,
and find an amazing study group. You got this!
– Kristine Tuttle, BSN, RN
By purchasing and/or downloading this material, you agree to the following terms and conditions: you agree that this ebook and all other
media produced by NurseInTheMaking LLC are simply guides and should not be used over and above your course material and teacher
instruction in nursing school. When details contained within these guides and other media differ, you will defer to your nursing school’s faculty/
staff instruction. Hospitals and universities may differ on lab values; you will defer to your hospital or nursing school’s faculty/staff instruction.
These guides and other media created by NurseInTheMaking LLC are not intended to be used as medical advice or clinical practice; they are for
educational use only. You also agree to not distribute or share these materials under any circumstances; they are for personal use only.
© 2023 NurseInTheMaking LLC. All content is property of NurseInTheMaking LLC and www.anurseinthemaking.com. Replication and
distribution of this material is prohibited by law. All digital products (PDF files, ebooks, resources, and all online content) are subject to
copyright protection. Each product sold is licensed to an individual user and customers are not allowed to distribute, copy, share, or
transfer the products to any other individual or entity, they are for personal use only. Fines of up to $10,000 may apply and individuals
will be reported to the BRN and their school of nursing.
www.anurseinthemaking.com
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