Basic Dysrhythmia Course Exam
Questions and Correct Answers
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:
Questions and Correct Answers
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:
