Front | Back |
Premature ventricular complexes (PVCs) that look alike in the same lead and begin from the same anatomic site (i.e., focus) are called __________ PVCs?
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Uniform
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QRS complexes that vary in shape and amplitude from beat and appear to twist from upright to negative or negative to upright and back, resembling a spindle?
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Polymorphic Ventricular Tachycardia
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When a delay or interruption in impulse conduction from the atria to the ventricles occurs as a result of a transient or permanent anatomic or functional impairment, the resulting dysrhythmia is called?
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Atrio-ventricular Block
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Whenever the criteria for bundle branch block have been met and lead V1 displays an rSR pattern, you should suspect a?
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Right bundle branch block
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The PR interval of a first-degree AV block?
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Is constant and more than 0.20 sec in duration
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An example of a complete atrio-ventricular AV block?
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Third-degree AV block
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An example of a 2:1 AV block?
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The PR interval remains constant
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Which lead is probably the best to use when differentiating between right and left bundle branch block?
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V1
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The term capture, as it pertains to pacing, refers to?
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Successful conduction of pacemaker's impulse thru the myocardium, resulting in depolarization
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The 12-lead ECG only provides a __________ -second view of each lead.
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2.5
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Although a right ventricular infarction may occur by itself, it is more commonly associated with a(n) __________ wall myocardial infarction.
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Inferior
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POOR R-wave progression is a phrase used to describe R-waves that decrease in size from V1, to V4. This is often seen in an __________ infarction.
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Anteroseptal
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The right atrium receives de-oxygenated blood from the __________ (which carries blood from the head and upper extremities), and the __________ (which carries blood from the lower body), and __________ (which receives blood from the intracardiac circulation).
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Superior vena cavainferior vena cavacoronary sinus
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A beat originating from the AV junction that appears later than the next expected sinus beat is called a __________.
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Junctional escape beat
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A rapid, wide-QRS rhythm associated with pulselessness, shock, or heart failure should be presumed to be?
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Ventricular Tachycardia
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