Questions With Reviewed Correct
Detailed Answers
1. An anterior myocardial infarction occurs when tissue supplied by the _____
artery suffers injury due to lack of blood supply?
Right
Circumflex
Obtuse Marginal
left anterior descending - ANSWER Left anterior descending artery
2. The fifth intercostal space, left midclavicular line is a landmark for what
precordial electrode placement?
V3
V4
V5
V6 - ANSWER V4
3. Junctional Rhythms occur because the electrical impulse comes from the
AV nodal tissue instead of the?
SA node
Ventricles
Atrial Tissue
,Bundle of His - ANSWER SA Node
4. The normal electrocardiographic response to exercise?
Increased PR and QT intervals
Decreased PR and QT intervals
Increased PR interval and decreased QT interval
Decreased PR interval and increased QT interval - ANSWER Decreased PR and
QT intervals
5. Which of the following atrial rates would need to be communicated to the
physician?
75
85
195
305 - ANSWER 195
6. Ventricular tachycardia in which depolarization impulses moving from one
ventricle to the other, resulting in a twisted ribbon appearance on the ECG
tracing is called?
torsades de pointes
ventricular crossover
ventricular fibrillation
ideoventricular acceleration - ANSWER Tosades de Pointes
7. A regular rhythm at a rate of 40-60 beats per minute, with narrow QRS
complexes, and no visible P waves is consistent with the presence of?
, Atrial fibrillation
Sinus bradycardia
junctional rhythm
ideoventricular rhythm - ANSWER Junctional Rhythm
8. A normal Q waves represents?
Repolarization of the atria
Depolarization of the cardiac apex
Depolarization of papillary muscles
Depolarization of the interventricular septum - ANSWER Depolarization of
the interventricular septum
9. What is the number one thing that can be done to prevent the spread of
infection?
Wash hands
wear gloves
check the patient's chart
look for isolation precaution signs - ANSWER Wash hands
10. Left Ventricular hypertrophy is indicated when the combined measured
amplitude is greater than or equal to 35 mm in which of the following
leads?
V1 or V2 S-wave, II AVF or R-wave
V1 or V2 S-wave, V3 or V4 R-wave
V1 or V2 S-wave, V5 or V6 R-wave