EKG Final Exam Questions |Already Answered | Graded A+
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Course
EKG
Institution
EKG
A branch of the _______ supplies the right atrium and right ventricle with blood - ANSWER-right
coronary artery (RCA)
Stimulation of parasympathetic nerve fibers typically results in what action? - ANSWER-Slowed
conduction through the atrioventricular (AV) node
The contribution of blood that is...
EKG Final Exam Questions |Already
Answered | Graded A+
A branch of the _______ supplies the right atrium and right ventricle with blood - ANSWER-right
coronary artery (RCA)
Stimulation of parasympathetic nerve fibers typically results in what action? - ANSWER-Slowed
conduction through the atrioventricular (AV) node
The contribution of blood that is added to the ventricles and results from atrial contraction is called: -
ANSWER-atrial kick
Semilunar Valves include: - ANSWER-pulmonary valve and aortic valve
The left main coronary artery divides into the - ANSWER-LAD and Cx branches
_____ cells are specialized cells of the electrical conduction system responsible for the spontaneous
generation and conduction of electrical impulses. - ANSWER-Pacemaker
The absolute refractory period beings with.... - ANSWER-begins with the onset of the QRS complex and
terminates at approximately the apex of the T wave
T/F: The QT interval represents the time from initial depolarization of the ventricles to the end of
ventricular repolarization - ANSWER-true
How do you determine whether the atrial rhythm on an ECG tracing is regular or irregular? - ANSWER-
compare P-P intervals
Which ECG leads use two distinct electrodes, one of which is positive and the other negative? -
ANSWER-leads I, II, and III
, In sinus arrhythmia, a gradual decreasing of the heart rate is usually associated with? - ANSWER-
expiration
An ECG rhythm strip shows a ventricular rate of 46 bpm, a regular rhythm, a PR interval of 0.14 second,
a QRS duration of 0.06 second, and one upright P wave before each QRS. This rhythm is: - ANSWER-sinus
bradycardia
SA block is a disorder of ______, and sinus arrest is a disorder of impulse _______. - ANSWER-SA block is
a disorder of conduction
Sinus arrest is a disorder of formation
Signs and symptoms experienced during a tachydysrhythmia are usually primarily related to: - ANSWER-
decreased ventricular filling time and stroke volume
Example that reflects ectopic (latent) pacemaker: - ANSWER-the AV junction and ventricles
A wandering atrial pacemaker rhythm with a ventricular rate of 60 to 100 bpm may also be referred to
as: - ANSWER-multiform atrial rhythm
The most common type of supraventricular tachycardia (SVT) is? - ANSWER-AVNRT-- AV nodal reentrant
tachycardia
If the onset or end of paroxysmal atrial tachycardia or paroxysmal supraventricular tachycardia (PVST) is
not observed on the ECG, the dysrhythmia is called: - ANSWER-SVT
paroxysmal means sudden onset
Most common sustained dysrhythmia in adults? - ANSWER-AFib
T/F: The difference between premature atrial complexes (PACs) and premature junctional complexes
(PJCs) in leads II, III and aVF is a PAC typically has a positive P wave before the QRS complex, whereas a P
wave may or may not be present in a PJC - ANSWER-true
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