EKG TEST - NW HOSPITAL
REVIEW EXAM WITH
CORRECT ANSWERS 2025
0.12-0.20 ( correct answers ) what is the range for
seconds the PRI?
0.06 - <0.12 seconds ( correct answers ) what is the range for the QRS
interval?
0.32 - 0.44 seconds (for HR in the 60-100's) ( correct
answers ) what is the range for the QT
interval?
contraction of the heart ( correct answers ) what does depolarization mean?
relaxation of the heart (filling period) ( correct answers )
1. absolute
what refractory
does repolarization mean?
period ( correct answers ) name the two types of
2.relative refractory refractory
period periods
RRP - It is possible for a stimulus to cause another action potential, therefore
this is the vulnerable period of the cardiac cycle.
ex: the longer the QT interval, the more increased risk for the RRP
(zofran, methadone, haldol and amio lengthen the QT interval)
( correct answers ) describe the RRP (relative refractory period) and why
it can be lethal
atrial depolarization ( correct answers ) what
does the p wave represent? P-P interval ( correct answers ) how
is the atrial heart rate counted?
Represents conduction time thru the atria, AV node and purkinje fibers
( correct answers ) what does the PRI represent?
Represents ventricular depolarization ( correct answers )
what does the QRS interval represent?
by counting the number of R-R waves ( correct answers )
how is the ventricular heart rate counted?
GRADED
represents
A+ the beginning of ventricular repolarization ( correct
answers ) what does the QT segment
represent?
, This is the point where the QRS complex ends and the ST ( corre
segment begins. answers ) what is the J point? ct
1-2 mm ( correct answers ) ST
elevation or depression of mm in more than 2 neighboring leads suggests
myocardial ischemia, injury or infarction.
Represents complete cycle of ventricular depolarization and repolarization
( correct answers ) what does the QT interval represent?
HR: monitor
Tx: 60-100 patient and ( correct answers ) what is the normal rate
VS sinus rhythm? for normal
what are the treatments?
HR: 100-150
tx: treat the underlying cause - fever, pain, hypotension,
hyperparathyroidism, hypoxia, drugs, caffeine, anxiety ( correct
answers ) what is the normal rate for sinus tachycardia?
what are the
treatments? HR:
below 60 Treatments:
• Asymptomatic: monitor & observe for progression •Treat the underlying
cause (d/c meds such as digoxin, beta blockers, etc.)
• Symptomatic: Consider Atropine & pacemaker/ epi or dopamine drip
( correct answers ) what is the normal HR for bradycardia?
what are the treatments?
HR: Rate is normal or bradycardic
Tx: treat the underlying cause and monitor patient for further ( corre
progression answers ) what is the HR for sinus arrhythmia? ct
what are the treatments?
HR: Heart rate usually slow but may be
normal
GRADED
A+
REVIEW EXAM WITH
CORRECT ANSWERS 2025
0.12-0.20 ( correct answers ) what is the range for
seconds the PRI?
0.06 - <0.12 seconds ( correct answers ) what is the range for the QRS
interval?
0.32 - 0.44 seconds (for HR in the 60-100's) ( correct
answers ) what is the range for the QT
interval?
contraction of the heart ( correct answers ) what does depolarization mean?
relaxation of the heart (filling period) ( correct answers )
1. absolute
what refractory
does repolarization mean?
period ( correct answers ) name the two types of
2.relative refractory refractory
period periods
RRP - It is possible for a stimulus to cause another action potential, therefore
this is the vulnerable period of the cardiac cycle.
ex: the longer the QT interval, the more increased risk for the RRP
(zofran, methadone, haldol and amio lengthen the QT interval)
( correct answers ) describe the RRP (relative refractory period) and why
it can be lethal
atrial depolarization ( correct answers ) what
does the p wave represent? P-P interval ( correct answers ) how
is the atrial heart rate counted?
Represents conduction time thru the atria, AV node and purkinje fibers
( correct answers ) what does the PRI represent?
Represents ventricular depolarization ( correct answers )
what does the QRS interval represent?
by counting the number of R-R waves ( correct answers )
how is the ventricular heart rate counted?
GRADED
represents
A+ the beginning of ventricular repolarization ( correct
answers ) what does the QT segment
represent?
, This is the point where the QRS complex ends and the ST ( corre
segment begins. answers ) what is the J point? ct
1-2 mm ( correct answers ) ST
elevation or depression of mm in more than 2 neighboring leads suggests
myocardial ischemia, injury or infarction.
Represents complete cycle of ventricular depolarization and repolarization
( correct answers ) what does the QT interval represent?
HR: monitor
Tx: 60-100 patient and ( correct answers ) what is the normal rate
VS sinus rhythm? for normal
what are the treatments?
HR: 100-150
tx: treat the underlying cause - fever, pain, hypotension,
hyperparathyroidism, hypoxia, drugs, caffeine, anxiety ( correct
answers ) what is the normal rate for sinus tachycardia?
what are the
treatments? HR:
below 60 Treatments:
• Asymptomatic: monitor & observe for progression •Treat the underlying
cause (d/c meds such as digoxin, beta blockers, etc.)
• Symptomatic: Consider Atropine & pacemaker/ epi or dopamine drip
( correct answers ) what is the normal HR for bradycardia?
what are the treatments?
HR: Rate is normal or bradycardic
Tx: treat the underlying cause and monitor patient for further ( corre
progression answers ) what is the HR for sinus arrhythmia? ct
what are the treatments?
HR: Heart rate usually slow but may be
normal
GRADED
A+
