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16 terms
Terms | Definitions |
|---|---|
 WPW | characterized by narrow P waves, 0.8 or less, delta waves, and inverted T-waves |
| Atrial Tachycardia | Supraventricular tachycardia(SVT)..Rapid regular rhythm 160-200 Beats per minute, When rate ABOVE 160, you know its not coming from SA node...ectopic focus in atria is taking control of rhythm...TX. meds, valsalva maneuver, cardioversion |
| PSVT | regular rapid, narrow QRS complex tachycardia that starts and stops abruptly. (P waves hard to see on ECG) abnormal conduction through a reentry circuit |
| digoxin toxicity rhythm | Like atrial tachycardia with AV block, will see 2 P waves for every QRS. Ventricular rate is half of the atrial rate |
| Premature atrial contractions | A benign arrythmia that is classified by the presence of premature P waves followed by a normal QRS and T waves. If the impulse is so early that the AV node has not fully repolarized, may not be followed by QRS. The premature P wave will result in a shift in the RR interval on the ECG (most common cause of a "pause" during NSR), followed by restoration of a normal RR interval |
| Supraventricular tachycardia's | A heart rate of over 100 bpm caused above the ventricle, either the atria, SA node, or AV junction. Includes: Sinus Tach, Atrial tach, Atrial flutter, Atrial fibrillation, and junctional tach. |
| junctional escape rhythm | the most common cause of this rhythm in healthy individuals is sinus bradycardia.it may also be seen in the presence of a high degree or complete av block.if the ventricular rate is slow, hemodynamic compromise may occur. Regular R-R interval, P waves may be seen before QRS (will be short & inverted), may be buried in the QRS, or may be seen after QRS. treament depends upon the underlying cause and the baseline dysrhythmias . atropine or a pacemaker may be used to increase the ventricular rate |
| Idioventricular rhythm | Rhythm: Regular Rate: 20-40 P-waves: Absent PR-Interval: Absent QRS Complex: Wide *SA and AV nodes have failed, just have ventricle firing, dying heart, no atrial contraction. Atropine, pacing |
| Accelerated idioventricular rhythm | Same as Idioventricular Rhythm, only faster -Rate: 40-100 -Rhythm: Regular -P: None -QRS: Wide b/c ventricles are only pacemakers. Looks like slow VT |
| non-sustained ventricular tachycardia | lasts for ≤ 30 seconds, rapid ventricular rate |
| sustained ventricular tachycardia | if run of VT lasts longer than 30 sec, can lead to VF |
| first degree heart block | - Appears Sinus - Exception: P-R interval > 0.20 seconds |
| second degree heart block, Mobitz type 1 Wenckebach | -Progressively longer PR intervals until a QRS is dropped -Rhythm: Irregular! -Ventricular Rate: Slow d/t dropped QRS beats -Tx: Usually benign; if bradycardia and symptomatic, give Atropine |
| Second degree heart bock, Mobitz Type 2 | PR intervals are consistant, but some P waves not followed by QRS complexes, problem in AV node, skipped ventricular beats, can lead to complete heart block |
| complete heart block | a condition in which the AV node is non functional and no impulses from SA node reach the ventricles |
| multifocal atrial tachycardia | Irregular atrial rate greater than 100 bpm with at least 3 morphologically distinct P waves (P's will all have diiferent appearance) |
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