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26 Cards in this Set
- Front
- Back
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Sinus Node Dysrhythmias include
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SInus bradycardia and SInus Tachycardia
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Sinus bradycardia is a hr of
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less than 60 bpm shown in p wave before qrs
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Sinus tachycardia is a hr of
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more than 100 bpm and is show in p wave before QRS
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Atrial dyrhythmias include
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PAC and A FIB
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PAC atrial dyrhythmia
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Premature Atrial Contraction that is a contraction that originates from somewhere else in the atria not in the SA node where it should be
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in healthy people PAC's result from
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stress, caffeinem and tobacco and slim people
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A fib atrial dyrhythmia is caused by
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the SA losing the ability to control the atrium so chaotic impulses arise from other areas of the atria and result in disorganized atrial depolarization
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With A fib is the atrial contraction is not
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effective
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A fib can cause
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impulses to not get through the AV node, so they are very irregular ventricular response
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There is an increased risk for _____ with a fibs
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embolism in the atria
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due to fear or mural thrombus' forming as a result of atrium emboli risk
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Must give patients anticoagulants
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The most common dysrhythmias are
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atrial dysrhythmias and they increase with age
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Ventricular dysrhythmias include
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PVC, Ventricular tachycardia, Ventricular fibrillation
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Ventricular dysrhythmias are a big problem because
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they have greater volume effects
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PVC ventricular dysrhythmia is
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premature ventricular contraction cause by a ventricular ectopic pacemaker (prob with av node and can be caused by premenopause hormones)
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Ventricular tachycardia (ventricular dysrhythmia) originates in ___ at what rate
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in the ventricle at a rate of 70-250 bpm and is sudden or insidious
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Ventricular tachycardia (ventricular dysrhythmias) are charecterized by
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wide (>.10 seconds) tall QRS complexes.
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Ventricular tachycardias are a big problem because
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Cardiac output is diminshed (ventricle cant contract, recive or empty volume)
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Ventricular fibrilliation (ventricular dysrhythmia) is a
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quivering of the ventricle but there is no contraction.
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Ventricular fibrillation is fatal without intervention because
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there is no cardiac output and is fatal without intervention
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Av block ventricular dyrhythmias include
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1st degree, 2nd degree, third degree
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Av block first degree is shown by a
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prolonged PR interval and slowing through the AV node but it usually asymptomatic
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Av block seond degree is
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intermittent failure of one or more impulse conductions being delayed from the atria to the ventricles.
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Two types of second degree av blocks include
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Type 1- wenckebach or type 2 which is more serious
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Third degree av block is
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a complete block and there is no connection between the atria and ventricles, both are firing seperately by seperate pacemakers.
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Third degree av blocks must be treated with
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a pace maker
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