Basic Dysrhythmia Course Exam With
100% Correct And Verified Answers 2024
SA node - Correct Answer-the major pacemaker of the heart
60-100 - Correct Answer-inherent rate of the SA node
40-60 - Correct Answer-inherent rate of the AV node
20-40 - Correct Answer-inherent rate of the ventricles (purkinjie fibers)
systole - Correct Answer-phase of contraction
diastole - Correct Answer-phase of relaxation
p wave - Correct Answer-what does atrial depolarization show on the ECG?
QRS complex - Correct Answer-what does ventricle depolarization show on the ECG?
T wave - Correct Answer-what does repolarization show on the ECG?
increase - Correct Answer-what does sympathetic stimulation do to the heart rate?
decrease - Correct Answer-what does parasympathetic stimulation do to the heart rate?
absolute refractory period - Correct Answer-the period immediately following the firing of
a nerve fiber when it cannot be stimulated no matter how great a stimulus is applied
relative refractory period - Correct Answer-during the ventricular cardiac cycle when all
cardiac cells are not fully repolarized and a strong enough stimulus can excite cardiac
tissue and initiate arrhythmias
last half of t wave - Correct Answer-When is the relative refractory period of the
ventricles?
.20 secs - Correct Answer-how much time is one large box in an ecg strip?
.04 secs - Correct Answer-how much time is one small box in an ecg strip?
0.12-0.20 - Correct Answer-normal range of PR interval
0.04-0.12 - Correct Answer-normal range of QRS complex
, less than 1/2 the preceding R-R interval - Correct Answer-what is the normal time of the
QT?
p to p - Correct Answer-how do you measure the atrial rate?
R to R - Correct Answer-how do you measure the ventricular rate?
sinus rhythm - Correct Answer-
sinus bradycardia - Correct Answer-
assess pt
atropine
pacing
IV, O2 - Correct Answer-tx for sinus bradycardia
sinus tachycardia - Correct Answer-
treat underlying cause (Fever, pain, hypoxia) - Correct Answer-tx for sinus tachycardia
sinus arrhythmia - Correct Answer-irregular rhythm that varies with respiration; rate
increases with inspiration and decreases with expiration
Premature Atrial Contraction - Correct Answer-rhythm with an early P wave, but the
next P wave comes on time
Premature Atrial Contraction (PAC) - Correct Answer-
continue to monitor
check electrolytes and oxygen
possible betablocker/calcium channel blocker - Correct Answer-tx for PAC
Atrial Tachycardia - Correct Answer-atrial Rate: 160-250 beats per minute, reglular
rhythm/QRS/
betablockers/calcium channel blocker
cardioversion
adenosine**
vagal manuever - Correct Answer-tx for atrial tachycardia
atrial flutter - Correct Answer-
atrial flutter - Correct Answer-atrial rate of 250-350
"saw tooth pattern"
atrial flutter
100% Correct And Verified Answers 2024
SA node - Correct Answer-the major pacemaker of the heart
60-100 - Correct Answer-inherent rate of the SA node
40-60 - Correct Answer-inherent rate of the AV node
20-40 - Correct Answer-inherent rate of the ventricles (purkinjie fibers)
systole - Correct Answer-phase of contraction
diastole - Correct Answer-phase of relaxation
p wave - Correct Answer-what does atrial depolarization show on the ECG?
QRS complex - Correct Answer-what does ventricle depolarization show on the ECG?
T wave - Correct Answer-what does repolarization show on the ECG?
increase - Correct Answer-what does sympathetic stimulation do to the heart rate?
decrease - Correct Answer-what does parasympathetic stimulation do to the heart rate?
absolute refractory period - Correct Answer-the period immediately following the firing of
a nerve fiber when it cannot be stimulated no matter how great a stimulus is applied
relative refractory period - Correct Answer-during the ventricular cardiac cycle when all
cardiac cells are not fully repolarized and a strong enough stimulus can excite cardiac
tissue and initiate arrhythmias
last half of t wave - Correct Answer-When is the relative refractory period of the
ventricles?
.20 secs - Correct Answer-how much time is one large box in an ecg strip?
.04 secs - Correct Answer-how much time is one small box in an ecg strip?
0.12-0.20 - Correct Answer-normal range of PR interval
0.04-0.12 - Correct Answer-normal range of QRS complex
, less than 1/2 the preceding R-R interval - Correct Answer-what is the normal time of the
QT?
p to p - Correct Answer-how do you measure the atrial rate?
R to R - Correct Answer-how do you measure the ventricular rate?
sinus rhythm - Correct Answer-
sinus bradycardia - Correct Answer-
assess pt
atropine
pacing
IV, O2 - Correct Answer-tx for sinus bradycardia
sinus tachycardia - Correct Answer-
treat underlying cause (Fever, pain, hypoxia) - Correct Answer-tx for sinus tachycardia
sinus arrhythmia - Correct Answer-irregular rhythm that varies with respiration; rate
increases with inspiration and decreases with expiration
Premature Atrial Contraction - Correct Answer-rhythm with an early P wave, but the
next P wave comes on time
Premature Atrial Contraction (PAC) - Correct Answer-
continue to monitor
check electrolytes and oxygen
possible betablocker/calcium channel blocker - Correct Answer-tx for PAC
Atrial Tachycardia - Correct Answer-atrial Rate: 160-250 beats per minute, reglular
rhythm/QRS/
betablockers/calcium channel blocker
cardioversion
adenosine**
vagal manuever - Correct Answer-tx for atrial tachycardia
atrial flutter - Correct Answer-
atrial flutter - Correct Answer-atrial rate of 250-350
"saw tooth pattern"
atrial flutter
