NURS 4020 TEST 1 – 2025 VERIFIED QUESTIONS &
ANSWERS (A+ GUIDE)
Normal Lifespan of RBC
120 Days
Large EKG box
0.2 seconds
QRS Complex
0.04-0.12
QT
0.24-0.44
AV blocks
electrical pathway is blocked
Premature ventricular contraction
Premature QRS
Caused by decrease in electrolytes (K, Ca, Mg) or hypoxia
,Unifocal
All PVC's look the same
Ventricular Tachycardia
3+ PVC's in a row
Usually 150-250 bpm
Very low CO
Stable V-tach
with a pulse
tx: lidocaine, amiodarone, cardioversion
Unstable V-tach
no pulse
Tx: CPR + defibrillation
Asystole
No electrical activity
tx: CPR + epinephrine
,Treatment for PEA
CPR + epinephrine
Ventricular Fibrillation
quivering ventricle, no conraction, no CO, BP, or pulse
Tx: CPR, defibrillation, epi, vasopressin
atrial fibrillation
disorganized atrial activity
tx: anticoags, Beta blockers, cardioversion
Antidysrhythmic Drugs
lidocaine
amiodarone
digoxin
adenosine (temporary asystole during SVT)
Atropine
Epinephrine
Biphasic defibrillation
two-way, require less energy than one-way (120-200J)
, Synchronized cardioversion
pt. sedated with versed
synchronized shock with R-wave
Less joules needed (50-100J)
Implantable cardioverter defibrillator
Senses v-fib or v-tach and delivers 25 J shock directly to the heart
Inserted through subclavian vein
Transvenous temporary pacemaker
through veins to access heart
Transcutaneous temporary pacemaker
paces externally, 1 pad on chest, 1 pad on back
Epicardial Temporary Pacemaker
Used prophylactically during heart surgery to prevent dysrhythmia
Permanent Pacemaker
ANSWERS (A+ GUIDE)
Normal Lifespan of RBC
120 Days
Large EKG box
0.2 seconds
QRS Complex
0.04-0.12
QT
0.24-0.44
AV blocks
electrical pathway is blocked
Premature ventricular contraction
Premature QRS
Caused by decrease in electrolytes (K, Ca, Mg) or hypoxia
,Unifocal
All PVC's look the same
Ventricular Tachycardia
3+ PVC's in a row
Usually 150-250 bpm
Very low CO
Stable V-tach
with a pulse
tx: lidocaine, amiodarone, cardioversion
Unstable V-tach
no pulse
Tx: CPR + defibrillation
Asystole
No electrical activity
tx: CPR + epinephrine
,Treatment for PEA
CPR + epinephrine
Ventricular Fibrillation
quivering ventricle, no conraction, no CO, BP, or pulse
Tx: CPR, defibrillation, epi, vasopressin
atrial fibrillation
disorganized atrial activity
tx: anticoags, Beta blockers, cardioversion
Antidysrhythmic Drugs
lidocaine
amiodarone
digoxin
adenosine (temporary asystole during SVT)
Atropine
Epinephrine
Biphasic defibrillation
two-way, require less energy than one-way (120-200J)
, Synchronized cardioversion
pt. sedated with versed
synchronized shock with R-wave
Less joules needed (50-100J)
Implantable cardioverter defibrillator
Senses v-fib or v-tach and delivers 25 J shock directly to the heart
Inserted through subclavian vein
Transvenous temporary pacemaker
through veins to access heart
Transcutaneous temporary pacemaker
paces externally, 1 pad on chest, 1 pad on back
Epicardial Temporary Pacemaker
Used prophylactically during heart surgery to prevent dysrhythmia
Permanent Pacemaker
