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BASIC DYSRHYTHMIA COURSE EXAM QUESTIONS AND ANSWERS
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BASIC DYSRHYTHMIA COURSE EXAM QUESTIONS AND ANSWERS
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BASIC DYSRHYTHMIA COURSE EXAMQUESTIONS AND ANSWERS
SA node - Answer-the major pacemaker of the heart
60-100 - Answer-inherent rate of the SA node
40-60 - Answer-inherent rate of the AV node
20-40 - Answer-inherent rate of the ventricles (purkinjie fibers)
systole - Answer-phase of contraction
diastole - Answer-phase of relaxation
p wave - Answer-what does atrial depolarization show on the ECG?
QRS complex - Answer-what does ventricle depolarization show on the ECG?
T wave - Answer-what does repolarization show on the ECG?
increase - Answer-what does sympathetic stimulation do to the heart rate?
decrease - Answer-what does parasympathetic stimulation do to the heart rate?
absolute refractory period - 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 - 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 - Answer-When is the relative refractory period of the ventricles?
.20 secs - Answer-how much time is one large box in an ecg strip?
.04 secs - Answer-how much time is one small box in an ecg strip?
0.12-0.20 - Answer-normal range of PR interval
0.04-0.12 - Answer-normal range of QRS complex
less than 1/2 the preceding R-R interval - Answer-what is the normal time of the QT?
p to p - Answer-how do you measure the atrial rate?
, R to R - Answer-how do you measure the ventricular rate?
sinus rhythm - Answer-
sinus bradycardia - Answer-
assess pt
atropine
pacing
IV, O2 - Answer-tx for sinus bradycardia
sinus tachycardia - Answer-
treat underlying cause (Fever, pain, hypoxia) - Answer-tx for sinus tachycardia
sinus arrhythmia - Answer-irregular rhythm that varies with respiration; rate increases
with inspiration and decreases with expiration
Premature Atrial Contraction - Answer-rhythm with an early P wave, but the next P
wave comes on time
Premature Atrial Contraction (PAC) - Answer-
continue to monitor
check electrolytes and oxygen
possible betablocker/calcium channel blocker - Answer-tx for PAC
Atrial Tachycardia - Answer-atrial Rate: 160-250 beats per minute, reglular
rhythm/QRS/
betablockers/calcium channel blocker
cardioversion
adenosine**
vagal manuever - Answer-tx for atrial tachycardia
atrial flutter - Answer-
atrial flutter - Answer-atrial rate of 250-350
"saw tooth pattern"
atrial flutter
complete heart block - Answer-which rhythms do you HAVE to use the exact rate
measurement card?
betablockers/calcium channel blockers
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