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9 Cards in this Set
- Front
- Back
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Be able to identify and interpret the characteristics of the following Ventricular Dysrhythmias:
Premature ventricular complex: PVC's |
early ectopic beats that interrupt normal rhythm & originate from irritable focus in ventricular conduction system or muscle tissue. Occur earlier than next expected sinus beat. May be caused by enhanced automaticity or reentry. May occur for no reason associated w/MI, hypoxia, acid-base imbalance, hypokalemia, stimulants, etc. May precipitate serious dysrhythmias (v-fib, v-tach). Characteristics: irregular rhythm. Wide QRS & T wave that goes the opposite direction from the R wave
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EKG IV
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EKG IV
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Be able to identify and interpret the characteristics of the following Ventricular Dysrhythmias: Ventricular tachycardia:
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fast dysrhythmia that arises from ventricles, 3+PVC’s in row (“run” of v-tach). Can occur w/without pulses; pt may be stable or unstable. Usually occurs in presence of MI or other sig cardiac disease. Often precedes V-fib & sudden death. Causes include acid-base & electrolyte imbalance, hypoxia, CHF, stimulants, drug toxicity. Characteristics: rapid rate (100-250), wide, bizarre QRS complexes. T waves may or may not be present, go opposite direction as R waves. Generally regular rhythm, no P waves generally visible
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Be able to identify and interpret the characteristics of the following Ventricular Dysrhythmias: Ventricular fibrillation:
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results from chaotic firing of multiple sites in ventricles. Heart muscle quivers; no cardiac output. Death occurs if not promptly tx. Appears as wavy line, totally chaotic, no logic
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Be able to identify and interpret the characteristics of the following Ventricular Dysrhythmias: Asystole:
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absence of any cardiac activity. Flat line on monitor screen
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Be able to recognize and distinguish between the characteristics of the following types of AV Heart Block: 1st degree AV block:
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not true block: all impulse get through but are delayed at the AV node (prolonged PR interval). Delay remains consistent from beat to beat. May occur in healthy people or in association with MI, increased vagal tone or dig toxicity
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Be able to recognize and distinguish between the characteristics of the following types of AV Heart Block: 2nd degree AV block, Type I (Wenckebach):
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Intermittent block at the AV node. PR interval increases until a QRS is dropped; sequence repeats
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Be able to recognize and distinguish between the characteristics of the following types of AV Heart Block: 2nd degree AV block, type II:
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intermittent block at the level of the bundle of His or bundle branches resulting in atrial impulses that are not conducted to the ventricles. More serious. Characteristics: more P waves than QRS complexes. (2:1, 3:1 or 4:1 ratio). PR normal or prolonged. QRS normal or wide
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Be able to recognize and distinguish between the characteristics of the following types of AV Heart Block: 3rd degree AV block:
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complete block of the conduction at or below the AV node—impulses from the atria cannot reach the ventricles. Atrial rate of 60-100, ventricular rate of 20-40. P and QRS unrelated
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