Term
|
Definition
SA Node
Normal Sinus Rhythm |
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Term
|
Definition
SA Node
Sick Sinus Syndrome |
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Term
|
Definition
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Term
|
Definition
|
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Term
|
Definition
|
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Term
SA Node
Normal Sinus Rhythm
Rate |
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Definition
Rate
Atria: Between 60 and 100 contractions per minute
Ventricle: Same as atrial rate |
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Term
SA Node
Normal Sinus Rhythm
Rhythm |
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Definition
| Rhythm: atria and ventricles are both regular |
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Term
SA Node
Normal Sinus Rhythm
Wave Configuration |
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Definition
Wave Configuration
P-Wave: follow each QRS complex with normal unchanging contour
QRS Complex: Married to P-Waves
T-Wave: normal |
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Term
SA Node
Normal Sinus Rhythm
Intervals |
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Definition
Intervals:
both the PR interval and QRS duration are normal |
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Term
SA Node
Normal Sinus Rhythm
Clinical Observation |
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Definition
Clinical Observation:
The sinus rate is higher in infants and children than in adults |
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Term
SA Node
Sinus Arrhythmia
Rate |
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Definition
Rate
Atrial: Variable, Usually 60-100 contractions per minute, maybe slower or faster
Ventricles: same as atrial |
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Term
SA Node
Sinus Arrhythmia
Rhythm |
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Definition
Rhythm
Atrial: Irregular; varies with respiration (increases with inspiration, decreases with expiration)
Ventricle: Irregular; same as atria |
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Term
SA Node
Sinus Arrhythmia
Wave configuration |
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Definition
wave configuration
P-Wave, QRS complex, and T-Wave follow normal pattern |
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Term
SA Node
Sinus Arrhythmia
Intervals |
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Definition
Intervals:
Both PR Interval and QRS duration are normal |
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Term
SA Node
Sinus Arrhythmia
Clinical Observation |
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Definition
Clinical Observation
Harmless, Seen in children or young adults |
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Term
SA Node
Sinus Bradycardia
Rate |
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Definition
Rate
Atrial: Less than 60 bpm
Ventricles: Less than 60 bpm |
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Term
SA Node
Sinus Bradycardia
Rhythm |
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Definition
Rhythm:
Atrial and Ventricles are regular |
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Term
SA Node
Sinus Bradycardia
Wave Configuration |
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Definition
Wave Configuration:
P-Wave, QRS complex, and T-Wave is normal pattern |
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Term
SA Node
Sinus Bradycardia
Intervals |
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Definition
Intervals
PR Interval: As the Sinus rate slows, PR interval lengthens
QRS Duration: normal |
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Term
SA Node
Sinus Bradycardia
Clinical Observation |
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Definition
Clinical Observation
harmless; seen in young children or young adults |
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Term
SA Node
Sinus Tachycardia
Rate |
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Definition
Rate
Atria: 100-160 contractions per minute
Ventricle: 100-160 contractions per minute |
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Term
SA Node
Sinus Tachycardia
Rhythm |
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Definition
Rhythm
Atria and Ventricle rhythm is regular |
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Term
SA Node
Sinus Tachycardia
Wave configuration |
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Definition
wave configuration
P-Wave, QRS, and T-wave, follows normal pattern |
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Term
SA Node
Sinus Tachycardia
Intervals |
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Definition
Intervals:
PR interval: Normal to slightly shortened
QRS duration: Normal to slightly shortened |
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Term
SA Node
Sinus Tachycardia
Clinical Observation |
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Definition
Clinical Observation
rapid heart rate may increase cardiac output. can precipitate congestive heart failure in the damaged heart |
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Term
SA Node
Sick Sinus Syndrome
Rate |
|
Definition
Rate:
Atria: Irregular; alternating bradycardia (<60) and tachycardia (>100)
Ventricles: not always same as atria |
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Term
SA Node
Sick Sinus Syndrome
Rhythm |
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Definition
Rhythm:
Atria: irregularly irregular
Ventricle: irregularly irregular |
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Term
SA Node
Sick Sinus Syndrome
Wave Configuration |
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Definition
Wave configuration:
PWave: sometimes absent
QRS Complex and TWave are normal |
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Term
SA Node
Sick Sinus Syndrome
Intervals |
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Definition
Intervals:
PR Interval: Normal-Prolonged or absent
QRS duration: Normal |
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Term
SA Node
Sick Sinus Syndrome
clinical observation |
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Definition
clinical Observation
Can bee seen with ischemia and other heart diseases. associated with severe myocardial infarction |
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Term
|
Definition
Atria:
Premature Atrial Contractions |
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Term
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Definition
Atria:
Paraxysmal Atrial Tachycardia |
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Term
|
Definition
Atria:
Wandering Atrial Pacemaker |
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Term
|
Definition
|
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Term
|
Definition
Atria:
Atria Fibrillation |
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Term
Atria
Premature Atrial Contraction
Rate |
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Definition
Rate
Atria: depends on number of PCA's
Ventricle: same as atria |
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Term
Atria
Premature Atrial Contraction
Rhythm |
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Definition
Rhythm
Atrial: Irregular
Ventricle: same as atrial |
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Term
Atria
Premature Atrial Contraction
Wave configuration |
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Definition
Wave Configuration
Pwave: could be hidden in the perceeding twave
QRS: normal but maybe aberrantly conducted
TWave: higher if it includes pwave |
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Term
Atria
Premature Atrial Contraction
Intervals |
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Definition
Intervals
PR interval: normal, prolonged, or completely blocked
QRS duration: normal |
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Term
Atria
Premature Atrial Contraction
Clinical observation |
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Definition
Clinical Observation
May go into tacchycardia |
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Term
Atria
Paroxysmal Atrial Tachycardia
Rate |
|
Definition
Rate:
Atria: 140-250 contractions per minute
Ventricle: same as atria |
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Term
Atria
Paroxysmal Atrial Tachycardia
Rhythm |
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Definition
Rhythm
Atria and ventricles are regular |
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Term
Atria
Paroxysmal Atrial Tachycardia
Wave Configuration |
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Definition
Wave configuration
Pwave: often hard to discern; hidden in twave
QRS: normal
Twave: normal |
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Term
Atria
Paroxysmal Atrial Tachycardia
Intervals |
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Definition
Intervals
PR Interval: short <.12 if pwave present
QRS Duration: normal |
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Term
Atria
Paroxysmal Atrial Tachycardia
Wave configuration |
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Definition
clinical observation
a run of 3 or more PACS- underlying cause is digitalis toxicity |
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Term
Atria
Wandering Atrial Pacemaker
Rate |
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Definition
Rate
Atria: usually slow 58-62
Ventricle: same as atria |
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Term
Atria
Wandering Atrial Pacemaker
Rhythm |
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Definition
Rhythm
Atria:cyclic slowing and speeding as in sinus arrhythmia
Ventricle: same as atria |
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Term
Atria
Wandering Atrial Pacemaker
Wave Configuration |
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Definition
Wave configuration
Pwave: change in height, contour and direction in each cycle- retrograde
QRS: Complex; normal
Twave: normal |
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Term
Atria
Wandering Atrial Pacemaker
Intervals |
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Definition
Intervals:
PR: vary
QRS: normal |
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Term
Atria
Wandering Atrial Pacemaker
Clinical observation |
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Definition
Clinical observation
attributed to acute rheumatic fever |
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Term
|
Definition
Rate:
Atria:250-350
Ventricle:125-175 |
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Term
Atria
Atrial Flutter
Rhythm |
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Definition
Rhythm
Atrial: regular
Ventricle: often 2:1. AV conduction maybe irregular with 3:1 or AV Block |
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Term
Atria
Atrial Flutter
Wave Configuration |
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Definition
Wave configuration
Pwave: sawtooth pattern
QRS: normal
Twave: Normal |
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Term
Atria
Atrial Flutter
Intervals |
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Definition
Interval:
PR: not measured
QRS: normal but may be widened if flutter waves are buried in QRS complex |
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Term
Atria
Atrial Flutter
Clinical Observation |
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Definition
Clinical Observation
Organic heart disease; occur in alcohol toxication |
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Term
Atria
Atrial Fibrillation
Rate |
|
Definition
Rate
Atria: 350-600
Ventricle: 100 |
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Term
Atria
Atrial Fibrillation
Rhythm |
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Definition
Rhythm
both atria and ventricle are irregularly irregular |
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Term
Atria
Atrial Fibrillation
Wave Configuration |
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Definition
Wave configuration
Pwave: not discernable
QRS: normal
Twave: normal |
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Term
Atria
Atrial Fibrillation
Intervals |
|
Definition
Intervals:
PR: not measurable
QRS: normal |
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Term
Atria
Atrial Fibrillation
Clinical Observation |
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Definition
clinical observation
Seen with heart attack and can lead to ventricle problems |
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Term
|
Definition
AV Node
Premature Nodal Contraction |
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Term
|
Definition
AV Node
Nodal or Junctional Rhythm |
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Term
|
Definition
AV Node:
First Degree AV Block |
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Term
|
Definition
AV Node
Second Degree AV Block- Wenckebach |
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Term
|
Definition
AV Node
Second Degree AV Block- Wenckebach (type 2) |
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Term
|
Definition
AV Node
Third Degree AV Block |
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Term
|
Definition
AV Node
Wolff-Parkinson White Syndrome |
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Term
AV Node
Premature Nodal Contraction
Rate |
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Definition
Rate:
Atria: determined by the number of premature beats
Ventricle: same |
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Term
AV Node
Premature Nodal Contraction
Rhythm |
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Definition
rhythm
Both atria and ventricle rhythm is irregular due to premature beats |
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Term
AV Node
Premature Nodal Contraction
Wave Configuration |
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Definition
Wave configuration
Pwave: inverted if visible, in lead 2, 3, and avF, may occur before, after, or during QRS
QRS: Normal
Twave: normal |
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Term
AV Node
Premature Nodal Contraction
Intervals |
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Definition
Interval:
PR: <.12 seconds if pwave present
QRS: normal |
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Term
AV Node
Premature Nodal Contraction
Clinical observation |
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Definition
Clincal Observation
isolated PNC's occur in normal individuals. may indicate organic heart disease. (supra-ventricular tachycardia) |
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Term
AV Node
Nodal or junctional Rhythm
Rate |
|
Definition
Rate:
Atria: 40-80
Ventricle: same as atria |
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Term
AV Node
Nodal or junctional Rhythm
Rhythm |
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Definition
Rhythm
Both atria and ventricle are regular |
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Term
AV Node
Nodal or junctional Rhythm
Wave configuration |
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Definition
Wave configuration
PWave: absent or inverted if present or when the rhythm returns to NSR, the pwave is nomal
QRS: normal
Twave: normal |
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Term
AV Node
Nodal or junctional Rhythm
intervals |
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Definition
Interval:
PR: shortened, usually .08-.12
QRS: normal |
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Term
AV Node
Nodal or junctional Rhythm
clinical observation |
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Definition
Clinical Observation
Most commonly occurs with digitalis toxicity. seen with heart attacks and inflammatory disease of the heart |
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Term
AV Node
First Degree AV Block
Rate |
|
Definition
Rate:
Artia: usually within normal range, depends on underlying rhythm
Ventricle: same |
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Term
AV Node
First Degree AV Block
Rhythm |
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Definition
Rhythm:
atria and ventricles are regular |
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Term
AV Node
First Degree AV Block
Wave Configuration |
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Definition
Wave configuration
Pwave: precede each QRS complex
QRS: normal
twave: normal |
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Term
AV Node
First Degree AV Block
Intervals |
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Definition
Intervals:
PR intervals: prolonged to greater than .20 seconds but at a constant level
QRS: Normal and present |
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Term
AV Node
First Degree AV Block
Clinical Observation |
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Definition
Clinical Observation:
warning of more advanced forms of AV block and acute MI. due to digitalis excess |
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Term
AV Node
Second Degree AV Block: Wenckebach
Rate |
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Definition
Rate:
Atrial: normal, about 100 contractions per minute
Ventricle: about 80 contractions per minute |
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Term
AV Node
Second Degree AV Block: Wenckebach
Rhythm |
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Definition
Rhythm
Atria: regular
Ventricle Irregular; depending on degree of block |
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Term
AV Node
Second Degree AV Block: Wenckebach
Wave configuration |
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Definition
Wave Configuration
PWave: more numerous that QRS
QRS: normal but not always present |
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Term
AV Node
Second Degree AV Block: Wenckebach
Interval |
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Definition
Interval
PR: becomes progressively longer until the action potential is not confucted and no QRS results. sequence starts over
QRS: normal |
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Term
AV Node
Second Degree AV Block: Wenckebach
Clinical Observation |
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Definition
| serious; common in patients with acute inferior myocardial infarction. produced by excess digitalis |
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Term
AV Node
Second Degree AV Block- Type 2
Rate |
|
Definition
Rate:
Atrial:Normal
Ventricular:Depends on the degree of the block |
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Term
AV Node
Second Degree AV Block- Type 2
Rhythm |
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Definition
Rhythm
Atrial: Regular
Ventricular: Irregular, depending on degree of AV block |
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Term
AV Node
Second Degree AV Block- Type 2
Wave configuration |
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Definition
Waves Configuration
P waves: P waves are consistently related to the ventricular contractions, but P waves are more numerous than the QRS complexes.
QRS complex: Normal |
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Term
AV Node
Second Degree AV Block- Type 2
Interval |
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Definition
Intervals
PR interval: For conducted contractions, the PR interval is prolonged at a constant rate or value. May be normal but likely prolonged but prolonged at constant rate or value. Sudden block of one or more P waves will occur without preceding PR prolongation.
QRS duration: Usually normal but can be wide – can be 0.10 sec or greater, periodically absent after P waves |
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Term
AV Node
Second Degree AV Block- Type 2
Wave Configuration |
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Definition
Clinical Observaition:
occurs in large anterior myocardial infractions and forerunner to complete AV block |
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Term
AV Node
Third Degree AV Block
Rate |
|
Definition
Rate
Atrial: Normal, greater than
Ventricular: 30-40 contractions per min |
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Term
AV Node
Third Degree AV Block
Rhythm |
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Definition
Rhythm
Atrial: Regular
Ventricular: Regular
There is no relationship between the atrial and ventricular rhythms |
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Term
AV Node
Third Degree AV Block
Wave Configuration |
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Definition
Waves Configuration
P waves: Normal shape
QRS complex: Normal |
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Term
AV Node
Third Degree AV Block
Intervals |
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Definition
Intervals
PR interval: PR interval completely variable and unrelated to the QRS complex.
QRS duration: Normal if the escape focus is above the bifurcation of the bundle of His, but widened and greater than 0.12 seconds if the escape focus is below this point. |
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Term
AV Node
Third Degree AV Block
Clinical Observation |
|
Definition
Clinical Observation:
Ventricle rate can be so slow that circulation can not be maintained; causing congestive heart failure and angina |
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Term
AV Node
Wolff-Parkinson-White Syndrome
Rate |
|
Definition
Rate
Atrial: Normal, usually between 60-100 contractions per min
Ventricular: Same |
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Term
AV Node
Wolff-Parkinson-White Syndrome
Rhythm |
|
Definition
Rhythm
Atrial: Regular
Ventricular: Regular |
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Term
AV Node
Wolff-Parkinson-White Syndrome
Wave Configuration |
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Definition
Waves Configuration
P waves: Normal, precede each QRS complex
QRS complex: Slurred upstroke of the QRS complex (Delta wave) may be seen in on or more leads. |
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Term
AV Node
Wolff-Parkinson-White Syndrome
intervals |
|
Definition
Intervals
PR interval: Shortened, less than 0.12 sec, due to acessory pathway and premature ventricular excitation.
QRS duration: Prolonged, usually greater than 0.12 sec. |
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Term
AV Node
Wolff-Parkinson-White Syndrome
Clinical Observation |
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Definition
Clinical Observation
pre-excitation syndrome. Uncommon. can lead to paroxysmal atrial or ventricular tachycardia |
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Term
|
Definition
Ventricle
Premature Ventricular Contraction |
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Term
|
Definition
Ventricle
Ventricular Tachycardia |
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Term
|
Definition
Ventricle
Paraoxysmal Ventricular Tachycardia |
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|
Term
|
Definition
Ventricle
Ventricular Flutter |
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Term
|
Definition
Ventricle
Ventriclar Fibrillation |
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|
Term
Ventricle
Premature Ventricular Contraction
Rate |
|
Definition
Rate
Atrial: Variable
Ventricular: Determined by the underlying ventricular contractions and number of PVCs. |
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Term
Ventricle
Premature Ventricular Contraction
Rhythm |
|
Definition
Rhythm
Atrial: Irregular because of PVCs
Ventricular: Irregular because of PVCs |
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Term
Ventricle
Premature Ventricular Contraction
wave configuration |
|
Definition
Waves Configuration
P waves: Not seen and often lost in the QRS or T wave of PVC
QRS complex: Normal shape for normal contraction |
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Term
Ventricle
Premature Ventricular Contraction
Intervals |
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Definition
Intervals
PR interval: Not applicable
QRS duration: Wide and bizarre and greater than 0.12 seconds.
T wave: Usually opposite-directed |
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Term
Ventricle
Premature Ventricular Contraction
Clinical Observation |
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Definition
Clinical Observation
Reflect myocardial irritability and precipitate lethal disrhytmias |
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Term
Ventricle
Ventricular Tachycardia
Rate |
|
Definition
Rate
Atrial: Undeterminable
Ventricular: 100-250 bpm |
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|
Term
Ventricle
Ventricular Tachycardia
rhythm |
|
Definition
Rhythm
Atrial: Undeterminable
Ventricular: Generally regular but maybe irregular |
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Term
Ventricle
Ventricular Tachycardia
Wave configuration |
|
Definition
Waves Configuration
P waves: Often lost in the QRS complex
QRS complex: Wide and bizarre
T wave: Usually opposite-directed |
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Term
Ventricle
Ventricular Tachycardia
intervals |
|
Definition
Intervals
PR interval: Not measurable
QRS duration: Greater than 0.12 seconds
T wave: Usually opposite-directed |
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Term
Ventricle
Ventricular Tachycardia
clinical observation |
|
Definition
Clinical Observation
serious and dangerous; precursor to ventricular fibrillation |
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|
Term
Ventricle
Paraoxysmal Ventricular Tachycardia
Rate |
|
Definition
Rate
Atrial: Difficult to determine
Ventricular: 150-250 bpm |
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|
Term
Ventricle
Paraoxysmal Ventricular Tachycardia
rhythm |
|
Definition
Rhythm
Atrial: ?
Ventricular:Variable |
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Term
Ventricle
Paraoxysmal Ventricular Tachycardia
Wave configuration |
|
Definition
Waves Configuration
P waves: Not always seen and often lost in the QRS complex
QRS complex: Normal shape |
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|
Term
Ventricle
Paraoxysmal Ventricular Tachycardia
Intervals |
|
Definition
Intervals
PR interval: Not discernible
QRS duration: Wide and bizarre and greater than 0.12 seconds |
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|
Term
Ventricle
Paraoxysmal Ventricular Tachycardia
Clinical observation |
|
Definition
Clinical Observation
Indicates coronary artery disease. precursor to ventricular fibrillation and if continues, cardiac output decreases |
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|
Term
Ventricle
Ventricular Flutter
Rate |
|
Definition
Rate
Atrial: Undeterminable
Ventricular: 250-350 bpm |
|
|
Term
Ventricle
Ventricular Flutter
rhythm |
|
Definition
Rhythm
Atrial: Undeterminable
Ventricular: Regular |
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|
Term
Ventricle
Ventricular Flutter
Wave configuration |
|
Definition
Waves Configuration
P waves: Not discernible
QRS complex: Smooth like in appearance |
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|
Term
Ventricle
Ventricular Flutter
interval |
|
Definition
Intervals
PR interval: Not measurable
QRS duration: Wide and bizarre and greater than 0.12 seconds; Often difficult to differentiate between QRS and T wave. |
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|
Term
Ventricle
Ventricular Flutter
clinical observation |
|
Definition
Clinical Observation:
Ventricles cannot fill- ineffective cardiac output. Lethal |
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|
Term
Ventricle
Ventricular Fibrillation
Rate |
|
Definition
Rate
Atrial: Same as Ventricular
Ventricular: 350-450 bpm, Rapid, disorganized |
|
|
Term
Ventricle
Ventricular Fibrillation
rhythm |
|
Definition
Rhythm
Atrial: Totally Irregular
Ventricular: Totally Irregular |
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|
Term
Ventricle
Ventricular Fibrillation
Wave Configuration |
|
Definition
Waves Configuration
P waves: Not discernible
QRS complex: Bizarre in appearance |
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|
Term
Ventricle
Ventricular Fibrillation
Intervals |
|
Definition
Intervals
PR interval: Not measurable. There is no pattern to the QRS complex
QRS duration: Undeterminable |
|
|
Term
Ventricle
Ventricular Fibrillation
Clinical Observation |
|
Definition
Clinical Observation:
Clinically dead without effective cardiac output. normal rhythm must be restored within a few minutes. Lethal |
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