Kaiser EKG Questions with Detailed Verified
Answers
Depolarization Ans: Electrical excitation of cell membrane followed by mechanical
contraction
Repolarization Ans: Return of cell membrane resting state
PR interval Ans: .12-.20sec
PR interval is measured fro beginning of ____ to beginning to ____? Ans: Beginning of
P wave to beginning of QRS wave
QRS complex Ans: .06-.12sec
First negative deflection after P wave R wave? Ans: Q wave
Negative deflection following R wave? Ans: S wave
Marks QRS complex and ends ST segment? Ans: J point
QT interval Ans: .44-.48sec
No perceived electrical current? Ans: Isoelectric line
Atrial depolorization? Ans: P wave
Delay at AV junction? Ans: PR segment
Ventricular depolorization? Ans: QRS
Normally isoelectronic line between QRS and beginning of T-wave? Ans: ST Segment
ventricular repolarization? Ans: T wave
What does T wave look like? Ans: Larger than P wave and slightly asymmetric
,beginning of ventricular activation through ventricular depolarization? Ans: QT
interval
If U wave is seen what does that mean? Ans: Hypokalemia or digitalis toxicity
Each 1mm box equals how many sec? Ans: 0.04sec
Each large box is how many sec? Ans: 0.20sec
Lead I makes left arm ____ and right arm ____. Its angle of orientation is
_____degrees Ans: Lead I makes left arm POSITIVE and right arm NEGATIVE. Its
angle of orientation is 0 degrees
Lead II is created making legs _______and the left arm is ______, the angle of
orientation is ____degrees? Ans: Legs are POSITIVE and right arm NEGATIVE. Angle
of orientation is 60 degrees
Lead III is created making legs ______and left arm _____, angle is _____degrees?
Ans: Legs is POSITIVE and left arm is NEGATIVE, angle is 120 degrees
Lead aVL created making left arm ______and other limbs _____, angle is -_____?
Ans: Left arm is POSITIVE and other limbs is NEGATIVE, angle is -30 degrees
Lead aVR is created making right arm _____ and other limbs _____, its angle of
orientation is -____degrees Ans: Right arm is POSITIVE and other limbs NEGATIVE,
angle of orientation is -150
Lead aVF is created making legs _____and other limbs ____, the angle of orientation
is ____ degrees toward the feet Ans: Legs POSITIVE and other limbs NEGATIVE,
angle of orientation is 90 degrees
V1 is placed ____-? Ans: 4th intercostal space to the right of the sternum
V2 is placed? Ans: 4th intercostal space, left sternal border
V3 is placed where? Ans: Between V2 and V4
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,V4 is placed where? Ans: Fifth intercostal space at the midclavicular line
V5 is placed where? Ans: Between V4 and V6
V6 is placed where? Ans: Fifth intercostal space, midaxillary line.
Treatment for bradycardia? Ans: Atropine 0.5mg IV
Sinus pause includes what two things? Ans: Sinus arrest and sinoatrial exit block
Sinus pause is one or two missed beats
Sinus arrest? Ans: Failure of the SA node to create an impulse, an interruption of R-R
regularity
When 3 or more beats aren't formed
Sinoatrial exit block? Ans: SA node generates impulse but is blocked before being
transmitted through the atria (missed or dropped beats)
R-R regularity continues with beats that follow the missed beat
Which valves are classified as the atrioventricular valves?
Mitral and pulmonic
Mitral and tricuspid
Pulmonic and aortic
Tricuspid and aortic Ans: Mitral and tricuspid
What allows the cardiac cells to transmit an electrical impulse?
Automaticity
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, Conductivity
Contractility
Excitability Ans: Conductivity
Along with Lead II, what is Lead III most helpful for monitoring?
Anterior wall
Changes associated with inferior wall myocardial infarction
QRS complexes
Ventricular function Ans: Changes associated with inferior wall myocardial infarction
What interval measurement represents the complete refractory period?
P wave to T wave
P wave to ST segment
QRS wave to next P wave
QRS to peak of the T wave Ans: QRS to peak of the T wave
What is the first step in preparation of the patient for ECG monitoring?
Do not prepare patient skin before applying leads
Reassure patient and maintain privacy
Turn on the monitor so the alarm sounds
Undress the patient and apply leads Ans: Reassure patient and maintain privacy
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Answers
Depolarization Ans: Electrical excitation of cell membrane followed by mechanical
contraction
Repolarization Ans: Return of cell membrane resting state
PR interval Ans: .12-.20sec
PR interval is measured fro beginning of ____ to beginning to ____? Ans: Beginning of
P wave to beginning of QRS wave
QRS complex Ans: .06-.12sec
First negative deflection after P wave R wave? Ans: Q wave
Negative deflection following R wave? Ans: S wave
Marks QRS complex and ends ST segment? Ans: J point
QT interval Ans: .44-.48sec
No perceived electrical current? Ans: Isoelectric line
Atrial depolorization? Ans: P wave
Delay at AV junction? Ans: PR segment
Ventricular depolorization? Ans: QRS
Normally isoelectronic line between QRS and beginning of T-wave? Ans: ST Segment
ventricular repolarization? Ans: T wave
What does T wave look like? Ans: Larger than P wave and slightly asymmetric
,beginning of ventricular activation through ventricular depolarization? Ans: QT
interval
If U wave is seen what does that mean? Ans: Hypokalemia or digitalis toxicity
Each 1mm box equals how many sec? Ans: 0.04sec
Each large box is how many sec? Ans: 0.20sec
Lead I makes left arm ____ and right arm ____. Its angle of orientation is
_____degrees Ans: Lead I makes left arm POSITIVE and right arm NEGATIVE. Its
angle of orientation is 0 degrees
Lead II is created making legs _______and the left arm is ______, the angle of
orientation is ____degrees? Ans: Legs are POSITIVE and right arm NEGATIVE. Angle
of orientation is 60 degrees
Lead III is created making legs ______and left arm _____, angle is _____degrees?
Ans: Legs is POSITIVE and left arm is NEGATIVE, angle is 120 degrees
Lead aVL created making left arm ______and other limbs _____, angle is -_____?
Ans: Left arm is POSITIVE and other limbs is NEGATIVE, angle is -30 degrees
Lead aVR is created making right arm _____ and other limbs _____, its angle of
orientation is -____degrees Ans: Right arm is POSITIVE and other limbs NEGATIVE,
angle of orientation is -150
Lead aVF is created making legs _____and other limbs ____, the angle of orientation
is ____ degrees toward the feet Ans: Legs POSITIVE and other limbs NEGATIVE,
angle of orientation is 90 degrees
V1 is placed ____-? Ans: 4th intercostal space to the right of the sternum
V2 is placed? Ans: 4th intercostal space, left sternal border
V3 is placed where? Ans: Between V2 and V4
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,V4 is placed where? Ans: Fifth intercostal space at the midclavicular line
V5 is placed where? Ans: Between V4 and V6
V6 is placed where? Ans: Fifth intercostal space, midaxillary line.
Treatment for bradycardia? Ans: Atropine 0.5mg IV
Sinus pause includes what two things? Ans: Sinus arrest and sinoatrial exit block
Sinus pause is one or two missed beats
Sinus arrest? Ans: Failure of the SA node to create an impulse, an interruption of R-R
regularity
When 3 or more beats aren't formed
Sinoatrial exit block? Ans: SA node generates impulse but is blocked before being
transmitted through the atria (missed or dropped beats)
R-R regularity continues with beats that follow the missed beat
Which valves are classified as the atrioventricular valves?
Mitral and pulmonic
Mitral and tricuspid
Pulmonic and aortic
Tricuspid and aortic Ans: Mitral and tricuspid
What allows the cardiac cells to transmit an electrical impulse?
Automaticity
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, Conductivity
Contractility
Excitability Ans: Conductivity
Along with Lead II, what is Lead III most helpful for monitoring?
Anterior wall
Changes associated with inferior wall myocardial infarction
QRS complexes
Ventricular function Ans: Changes associated with inferior wall myocardial infarction
What interval measurement represents the complete refractory period?
P wave to T wave
P wave to ST segment
QRS wave to next P wave
QRS to peak of the T wave Ans: QRS to peak of the T wave
What is the first step in preparation of the patient for ECG monitoring?
Do not prepare patient skin before applying leads
Reassure patient and maintain privacy
Turn on the monitor so the alarm sounds
Undress the patient and apply leads Ans: Reassure patient and maintain privacy
© Get it right 2025 Getaway - Stuvia US All rights reserved
