Ch8 Flashcards
1 Vagal maneuvers are performed to:
a. Slow the heart rate
b. Dilate the coronary arteries
c. Reduce ventricular irritability
d. Improve conduction through the AV node.
a. Slow the heart rate
2 The coronary arteries receive oxygenated blood from the:
a. Aorta
b. Coronary sinus
c. Pulmonary veins
d. Pulmonary arteries
a. Aorta
3 When any premature beat occurs more than six times per minute, the dysthymia assumes more importance and is called:
a. Regular
b. Frequent
c. Irregular
d. Continual
b. frequent
4 The initial setting of cardio version is __ J in atrial flutter rhythms.
A 209-250
B 150-200
C 200-300
D 50-100
D 50-100
5 The electrocardiogram is used to:
a. Determine pulse rate
b. Detect valvular dysfunction
c. Evaluate the electrical activity in the heart
d. Determine whether the heart is beating
c. Evaluate the electrical activity of the heart
6 Most atrial fibrillation waves are not followed by a QRS complex because the:
a. Impulses are initiated at the left ventricle
b. Stimuli are not strong enough to be conducted
c. Ventricle can receive only 120 stimuli in 1-minute
d. AV junction is unable to conduct all the excitation impulses
d. AV junction is unable to get out all the excitation impulses
7 Supraventricular rhythm means at the impulse, or stimulus arises above the ventricles.
a. True b. False
a. True
8 PAT is a sudden onset of atrial tachycardia.
a. True b. False
a. True
14 When a single irritable site in the atria initiates many electrical impulses at a rapid rate, the rhythm is called:
a. Sinus rhythm
b. Atrial flutter
c. Atrial fibrillation
d. Atrial Tachycardia
b. Atrial flutter
9 The T wave on the EKG strip represents:
a. Rest period
b. Bundle of his
c. Atrial contraction
d. Ventricular contraction
a. rest period
10 When interpreting dysrhythmias, you must remember that the most important key is the:
a. PR interval
b. Rate and rhythm
c. Presence of dysrhythmias
d. Patient’s clinical appearance
d. Patience clinical appearance
11 Premature atrial complexes may occur in any rhythm but are much easier to identify in any bradycardic rhythm.
a. True b. False
a. True
12 For a diagnosis of wondering atrial pacemaker, observation of at least __ different P waves is required.
a. two
b. three
c. four
d. six
b. three
13 Methods used to stimulate baroreceptors (located in the internal carotid and aortic arch) called __ maneuvers.
a. reflex
b. vasal
c. vagal
d. sinus
c. Vagal
15 SVT may occur in a healthy person and can result from:
a. overexertion
b. hypoxia
c. hypokalemia
d. all of the above
D ALL OF THE ABOVE
a. overexertion
b. hypoxia
c. hypokalemia
d. all of the above
