Ch 11 Flashcards
1 When the EKG shows there is no relationship between the P-wave in the QRS complex, you should suspect:
a. First-degree block
b. Second-degree block
c. Third-degree block
d. Electromechanical dissociation
C Third-degree block
2 Wenckebach differs from a complete heart block in that CHB usually has a:
a. Faster rate
b. Constant PR interval
c. Normal QRS
d. Regular RR interval
D Regular RR interval
3 PAT is a sudden onset of atrial tachycardia.
a. True b. False
A True
4 The keys to interpretation of a second-degree heart block, Mobitz type II, are the presence of constant PR intervals and the fact that there are more P waves present than QRS complexes.
a. True b. False
A True
5 In order to calculate heart rate accurately by the R-to-R interval method, the patient must have a regular rhythm.
a. True b. False
A True
6 Proper application of EKG chest electrodes includes all the following except:
a Cleaning the patient’s skin
b. Drying the patient’s skin
c. Shaving the chest area of excess hair
d. Cleaning each electrode prior to application
D Cleaning each electric prior to application
7 It is prudent to remember that, often, Mobitz type II heart block will progress to third-degree heart block.
A True
8 Typically, first-degree black results from excessive conduction delay in the:
a SA node
b Internodal pathway
c AV node
d Purkinje fibers
B SA node
9 Lead II is the most commonly used in the prehospital arena because it:
a Is easier to apply
b. Shows good T waves
c Illustrates good P waves
d Is faster to apply
C Illustrates good P waves
10 The heart block rhythm that most closely resembles a normal sinus rhythm is:
a Third-degree heart block
b Second-degree heart block
c first-degree heart block
d atrioventricular dissociation
C. First-degree heart block
11 It is important to note that the PR interval in Mobitz type II is constant, or regular, for every conducted beat.
a True b False
A True
12 The T wave on the EKG strip represents:
a Rest period
b Bundle of His
c Atrial contraction
d Ventricular contraction
A rest period
13 If the ventricular pacemaker is the escape pacemaker, the ventricular rate will most commonly be between 20 and 40 bpm.
a True b False
A True
14 A constant in prolong PR interval is the hallmark of __ degree block and is most commonly the only variation in the EKG strip.
a first-
b second-, type I
c third-
d second-, type II
A. First-
15 The first type of second-degree block is more serious than the second type because bradycardia is less likely to be present and because cardiac output is less likely to be seriously decreased in a second-degree type one block.
a True b False
A True
