RNSG 2432 - Exam 1 (Module 3 - Cardiac Rhythm
Disorders) Questions With Complete Solutions
Adenosine Correct Answer Decreases HR
Asystole tx Correct Answer pt flat lines. no heart beat or
electrical activity
only tx = CPR (no defibrilation)
epi and vasopressin
Atrial fibrilation assessment findings Correct Answer HR: 100-
178BPM
Rhythm: irregular
QRS: narrow
P wave: unidentifiable
(multiple ectopic foci firing chaotically)
2 hallmark signs = irregular rhythm and unidentifiable P wave
Atrial flutter assessment findings Correct Answer HR: up to
400 BPM
rhythm: regular
QRS: narrow
P wave: multiple P for every QRS
(R atrial ectopic foci beat too quickly, causing multiple atrial
beats for every one ventricular beat)
high risk of reoccurance!!
, Atropine Correct Answer increases HR by exciting the SA
node
Given IVPush 0.5-1mg Q3-5min
Max 3mg
Difference between pacemakers and implantable cardioverter
defibrillator (ICD)? Correct Answer pacemakers - implantable
leads that stimulate myocardium to contract
ICDs - implantable leads that senses v tach or v fib and shocks
the pt when they need it
Difference between synchronized cardioversion &
defibrillation ? Correct Answer synchronized cardioversion: in
sync with the R wave; used for A fib, A flutter, SVT, and VT
with pulse
defibrilation: electric shock to depolarize not in sync; used for V
tach and V fib
First degree AV block assessment findings Correct Answer
HR: 60-100
Rhythm: regular
QRS: narrow
P wave: present
QT interval: prolonged
How to calculate HR from ECG big block way Correct Answer
HR = 300 / # large squares in one R-R interval
Disorders) Questions With Complete Solutions
Adenosine Correct Answer Decreases HR
Asystole tx Correct Answer pt flat lines. no heart beat or
electrical activity
only tx = CPR (no defibrilation)
epi and vasopressin
Atrial fibrilation assessment findings Correct Answer HR: 100-
178BPM
Rhythm: irregular
QRS: narrow
P wave: unidentifiable
(multiple ectopic foci firing chaotically)
2 hallmark signs = irregular rhythm and unidentifiable P wave
Atrial flutter assessment findings Correct Answer HR: up to
400 BPM
rhythm: regular
QRS: narrow
P wave: multiple P for every QRS
(R atrial ectopic foci beat too quickly, causing multiple atrial
beats for every one ventricular beat)
high risk of reoccurance!!
, Atropine Correct Answer increases HR by exciting the SA
node
Given IVPush 0.5-1mg Q3-5min
Max 3mg
Difference between pacemakers and implantable cardioverter
defibrillator (ICD)? Correct Answer pacemakers - implantable
leads that stimulate myocardium to contract
ICDs - implantable leads that senses v tach or v fib and shocks
the pt when they need it
Difference between synchronized cardioversion &
defibrillation ? Correct Answer synchronized cardioversion: in
sync with the R wave; used for A fib, A flutter, SVT, and VT
with pulse
defibrilation: electric shock to depolarize not in sync; used for V
tach and V fib
First degree AV block assessment findings Correct Answer
HR: 60-100
Rhythm: regular
QRS: narrow
P wave: present
QT interval: prolonged
How to calculate HR from ECG big block way Correct Answer
HR = 300 / # large squares in one R-R interval
