©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
CCRN AACN Exam Questions and Answers
atrial fibrillation adverse consequences - Ans:✔✔-1. decreased cardiac output due to loss of atrial kick,
rapid ventricular rate, irregular ventricular rhythm
2. tachycardia induced cardiomyopathy - in rapid afib for prolonged period of time
3. thromboembolism
right bundle branch - Ans:✔✔--right side of the interventricular septum and right ventricle
-impulse travels slower as the right ventricle is smaller/thinner
left bundle branch - Ans:✔✔-two main divisions: anterior fascicle and posterior fascicle carrying impulses
to the left ventricle
PR interval - Ans:✔✔-delay of AV node to allow filling of ventricles
QRS complex - Ans:✔✔-ventricular depolarization
Page 1/87
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
shape depends on the lead that is being monitored and the ventricular activation device
T wave - Ans:✔✔-ventricular repolarization
normally in the same direction as the QRS
upright, flat, inverted
pathologies of T wave - Ans:✔✔-MI, E/L levels, drug effect, myocardial disease, and lead being recorded
u wave - Ans:✔✔-repolarization of the purkinje fibers
SHOULD BE POSITIVE especially when T wave is positive
large u waves can be seen when repolarization is abnormally prolonged - E/L imbalances like
hypokalemia, hypocalcemia, hypomagnesemia, IICP, LVH, certain medications
ST segment - Ans:✔✔-early ventricular repolarization
Page 2/87
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
should be at isoelectric line
J point - Ans:✔✔-where QRS complex ends and ST segment begins
QT interval - Ans:✔✔-ventricular depolarization and repolarization varies with age, gender, and heart
rate
beginning of the QRS to the end of the T wave
QT must be corrected to a HR of 60 bpm
QTc - Ans:✔✔-corrected QT interval =
QT/(square root of R-R interval)
normalizes for HR
long QTc --> torsades, ventricular arrhythmia, Vfib
vertical axis - Ans:✔✔-each small box is 1mm or 0.1 mV
Page 3/87
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
each large box is 5mm or 0.5 mV
most common complication of ischemic heart disease and MI - Ans:✔✔-dysrhythmias
best leads for differentiating wide QRS rhythms - Ans:✔✔-v1 and v6
v1 and v6 - Ans:✔✔-helps to differentiate VTACH from SVT with aberrant intraventricular conduction
helps to recognize right and left bundle branch blocks
differentiates between right and left ventricular ectopy
differentiates between right and left ventricular pacing
v1 and v6 placement - Ans:✔✔-v1 - fourth intercostal space at the right sternal border
v6 - left midaxillary line at the v4 level (fifth intercostal space midclavicular line)
primary dysrhythmia monitoring lead - Ans:✔✔-V1
Page 4/87
FIRST PUBLISH OCTOBER 2024
CCRN AACN Exam Questions and Answers
atrial fibrillation adverse consequences - Ans:✔✔-1. decreased cardiac output due to loss of atrial kick,
rapid ventricular rate, irregular ventricular rhythm
2. tachycardia induced cardiomyopathy - in rapid afib for prolonged period of time
3. thromboembolism
right bundle branch - Ans:✔✔--right side of the interventricular septum and right ventricle
-impulse travels slower as the right ventricle is smaller/thinner
left bundle branch - Ans:✔✔-two main divisions: anterior fascicle and posterior fascicle carrying impulses
to the left ventricle
PR interval - Ans:✔✔-delay of AV node to allow filling of ventricles
QRS complex - Ans:✔✔-ventricular depolarization
Page 1/87
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
shape depends on the lead that is being monitored and the ventricular activation device
T wave - Ans:✔✔-ventricular repolarization
normally in the same direction as the QRS
upright, flat, inverted
pathologies of T wave - Ans:✔✔-MI, E/L levels, drug effect, myocardial disease, and lead being recorded
u wave - Ans:✔✔-repolarization of the purkinje fibers
SHOULD BE POSITIVE especially when T wave is positive
large u waves can be seen when repolarization is abnormally prolonged - E/L imbalances like
hypokalemia, hypocalcemia, hypomagnesemia, IICP, LVH, certain medications
ST segment - Ans:✔✔-early ventricular repolarization
Page 2/87
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
should be at isoelectric line
J point - Ans:✔✔-where QRS complex ends and ST segment begins
QT interval - Ans:✔✔-ventricular depolarization and repolarization varies with age, gender, and heart
rate
beginning of the QRS to the end of the T wave
QT must be corrected to a HR of 60 bpm
QTc - Ans:✔✔-corrected QT interval =
QT/(square root of R-R interval)
normalizes for HR
long QTc --> torsades, ventricular arrhythmia, Vfib
vertical axis - Ans:✔✔-each small box is 1mm or 0.1 mV
Page 3/87
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
each large box is 5mm or 0.5 mV
most common complication of ischemic heart disease and MI - Ans:✔✔-dysrhythmias
best leads for differentiating wide QRS rhythms - Ans:✔✔-v1 and v6
v1 and v6 - Ans:✔✔-helps to differentiate VTACH from SVT with aberrant intraventricular conduction
helps to recognize right and left bundle branch blocks
differentiates between right and left ventricular ectopy
differentiates between right and left ventricular pacing
v1 and v6 placement - Ans:✔✔-v1 - fourth intercostal space at the right sternal border
v6 - left midaxillary line at the v4 level (fifth intercostal space midclavicular line)
primary dysrhythmia monitoring lead - Ans:✔✔-V1
Page 4/87
