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22 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Sinoatrial (SA) Node intrinsic firing rate
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60-100 bpm
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117
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Atrioventricular (AV) junctional tissue intrinsic firing rate
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40-60 bpm
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117
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Purkinje network intrinsic firing rate
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20-40 bpm
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117
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Which of the heart's pacemakers is the least efficient?
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The ventricles
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117
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premature ventricular complex PVC
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A single ectopic (out-of-place) complex that occurs earlier than the next expected complex and arises from an irritable site in the ventricles.
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118
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What kind of pauses do PVCs have?
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Compensatory pause one at which the SA node is not affected
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118
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interpolated beat
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Occurs when a PVC falls between two sinus beats without interfering with the rhythm.
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118
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morphology
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The shape
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118
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What is the morphology of a PVC base of off?
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The site of origin of the ectopic beat. Unifocal appear the same, where multifocal appear different.
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118
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PVCs often indicate what?
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myocardial irritability
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118
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salvos or runs of VT
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A name given to a run or 3 or more PVCs in a row.
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118
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PVC patterns
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-Ventricular bigeminy: Every other beat is a PVC
-Ventricular trigeminiy: Every third beat is a PVC -Ventricular quadrigminy: Every fourth beat is a PVC |
119
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Couplets or repetitive PVCs
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Two PVCs occurring together without a normal complex inbetween.
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119
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_ or more PVCs in a minute are consider serious
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6
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119
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The usual AIVR is _______ bpm, while V-Tach is uaually greater than ______ bpm.
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40-100
120 |
123
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ventricular tachycardia (VT or V tach)
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Rhythm in which three or more PVCs arise in sequence at a rate of greater than 100 bpm; commonly overrides the normal pacemaker of the heart.
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123
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sustained rhythm
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A rhythm that lasts for more than 30 seconds.
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124
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nonsustained rhythm
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A run of VT that lasts for less than 30 seconds.
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124
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hemodynamically unstable
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Refers to a patient who presents with hypotension, cx pain, SOA, and changes in mental status.
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124
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hemodynamically stable
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Refers to a pt who presents with a normal BP (normotensive) absence of cx pain, and no notable change in mental status.
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124
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Pulseless ventricular tachycardia is tx as ventricular fibrillation:
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with immediate defibrillation
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124
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torsades de pointes
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Similar to morphology of QRS complexes show variatins in width and shape; lifethreatening dysrhythmia
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125
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