Term
Type 1 Second Degree Heart Block
l.Regularity
2.Rate
3. p wave morphology
4. PRI
5. QRS |
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Definition
1. R-R interval is irregular
2. Atrial Rate 60-100
Ventricular rate slightly slower
3. upright and uniform Some P waves do not have a QRS complex
4. PRI continually increases until a QRS is dropped
5. < .12 sec |
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Term
Type 2 2° Heart Block
1.Regularity
2. Rate
3. p wave
4, PRI
5. QRS |
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Definition
l. May be regular or irregular 2. atrial 60-loo
ventricular <60
3. Upright and uniform
#p > # QRS
4. PRI on conducted beats will be Consistent
5. < .12 |
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Term
Complete Heart Block (3')
1. Regularity
2. Rate
3.p wave
4.PRI
5. QRS |
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Definition
1. p-P Regular and R-R Regular
2. 60-100
3. upright and uniform # p># QRS
4. no PRI
5. < . 12 is junctional
> .12 if Ventricular |
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Term
1° Heart Black
1. Rate
2. Regularity
3. pwave
4. PRI
5. QRS |
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Definition
l. Depends on underlying Rhythm
2. Depends on Rate of underlying Rhythm
3. Upright and uniform 1 : 1
4. Constant >.20
5. < . 12 |
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Term
Atrial Fibrillation
1. Rate
2. Regularity
3. Pwave
4. PRI
5. QRS |
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Definition
l. Atrial is Unmeasvrable
Vent. Rate <100 (controlled)
Vent. Rate > 100 (uncontrolled)
2. Atrial iS measurable
Vent. is grossly irregular
3. None, they are fibrillatory waves
4. no PRI
s. < . 12 |
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Term
Atrial Tuchy.
l-Rate
2. Regularity
3. Pwave
4. PRI
5. QRS |
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Definition
1. 150-250 usually
2. Regular, R-R is constant
3. May be flattened or notched, can be hidden in t-wave 1 : 1
4. .12-.20
5. < . 12 |
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Term
Atrial Flutter
I. Rate
2-Rhythm
3, Pwave
4. PRI
5. QRS |
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Definition
l. Atrial 250-350
Vent. depends on impulses Conducted
2. Atrial is regular
Vent may be irregular
3. None, they make flutter waves (Sawtooth pattern)
4. None
5. <.12 |
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Term
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Definition
the atria fire prematurleyand produce an ectopic beat
P wave may be flat, notched, or unusual
Beat will look similar to the rhythm beats |
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Term
Idioventricular
l. Regularity
2.Rate
3.pwave
4. PRI
5. QRS |
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Definition
l. Regular
2. 20-40 but can be < 20
3. no p-waves
4. no PRI
5. wide and bizzare at least .12 |
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Term
Ventricular fibrillation
1. Rate
2. Regularity
3. P wave
4. PRI
5. QRS |
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Definition
1. Cannot be determined
2. No waves or complex is that can be analyzed to determine regularity, the baseline is totally chaotic
3. No P wave
4. No PRI
5. No QRS complexes |
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Term
Ventricular tachycardia
1. Rate
2. Regularity
3. P wave
4. PRI
5. QRS |
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Definition
1. Atrial rate cannot be determined
ventricular rate range is usually 150 to 250.
If less than 150 slow vtach.
If greater than 250 ventricular flutter
2. Usually regular
3. No P waves
4. No PRI
5. QRS complex will be widened bizarre. Measuring at least .12 |
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Term
| premature ventricular complex |
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Definition
Single irritable focus with in the ventricles that fires prematurely to initiate an ectopic complex
There will be no P wave or PRI
The QRS complex will be wide and bizarre measuring at least .12 it will appear different than the underlying rhythm |
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Term
Wondering pacemaker
1. Rate
2. Regularity
3. P wave
4. PRI
5. QRS |
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Definition
1. 60-100
2. Slightly irregular
3. 1:1 but morphology changes as pacemaker site changes
4. <.20
5. <.12 |
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Term
Sinus Arrhythmia
1. Rate
2. Regularity
3. P wave
4. PRI
5. QRS |
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Definition
1. 60-100
2. R-R varies, rate can change with patient's Respirations
3. Upright, uniform, 1:1
4. Constant, .12-.20
5. <.12 |
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Term
Junctional Tachycardia
1. Rate
2. Regularity
3. P wave
4. PRI
5. QRS |
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Definition
1. 100-180
2. regular
3. can come before/ after QRS or can be hidden
P wave will be inverted
4. If before QRS it will be <.12
5. <.12 |
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Term
Accelerated Junctional
1. Rate
2. Regularity
3. P wave
4. PRI
5. QRS |
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Definition
1. 60-100
2. Regular
3. Can come before/after QRS or it a be lost
P wave will be inverted
4. If P wave precedes QRS it will be <.12
5. <.12 |
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Term
| Premature Junctional Complex |
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Definition
The pacemaker is an irritable focus within the AV junction that fires prematurely producing a single ectopic beat
the atria are depolarized via retrograde conduction
conduction through the ventricles is normal
The p-wave can be before or after QRS or it can be lost. P wave will be inverted
Complex looks similar to rhythm |
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Term
Junctional Escape
1. Rate
2. Rhythm
3. P wave
4. PRI
5. QRS |
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Definition
1. 40-60
2. Regular
3. The p-wave can come before or after the QRS or it can be lost completely. The p-wave will be inverted
4. If P wave precedes QRS complex it will be < .12
5. <.12 |
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Term
| the autonomic nervous system branches |
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Definition
1. Sympathetic
2. Parasympathetic |
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Term
Sympathetic branch
1. What chambers does this branch affect?
2. When this branch is stimulated what happens to heart rate, conduction, and irritability? |
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Definition
1. The atria and ventricles
2. Heart rate increases, conduction increases, and irritability increases |
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Term
Parasympathetic branch
1. What chambers does this branch affect?
2. When this branch is stimulated what happens to heart rate, conduction, and irritability? |
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Definition
1. Only the atria are affected
2. Heart rate decreases, conduction decreases, and irritability decreases |
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Term
what cardiac electrical activity is associated with each aof these areas:
1. P wave
2. PRI Segment
3. QRS Complex
4. T wave
5. Isoelectric line |
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Definition
1. Atrial Depolarization
2. Delay at AV node
3. Ventricular depolarization
4. Ventricular repolarization
5. No electrical activity |
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Term
| Parts of the conduction system (8) |
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Definition
1.Sinoatrial node
2. intraatrial node
3. Internodal pathway
4. Atrioventricular Junction
5. bundle of His
6. Left bundle branch
7. Right bundle branch
8. Perkinje fibers |
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Term
Normal sinus rhythm
1. Rate
2. Regularity
3. P wave
4. PRI
5. QRS |
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Definition
1. 60-100
2. Regular
3. Upright, uniform, 1:1
4. .12-.20
5. <.12 |
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Term
Sinus tachycardia
1. Rate
2. Regularity
3. P wave
4. PRI
5. QRS |
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Definition
1. 100-160
2. Regular
3. Uniform, upright, 1:1
4. .12-.20
5. <.12 |
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Term
Sinus bradycardia
1. Rate
2. Regularity
3. P wave
4. PRI
5. QRS |
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Definition
1. <60
2. Rhythm
3. Uniform, upright, 1:1
4. .12-.20
5. <.12 |
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Term
Idioventricular Rhythm
(description) |
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Definition
| In the absence of a higher pacemaker, the ventricless initiate a regular impulse at their inherent rate of 20-40 bpm |
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Term
Ventricular Fibrillation
(description) |
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Definition
| Multiple foci in the ventricles become irritable and generate uncoordinated, chaotic impulses that cause the heart to fibrillate rather than contract. |
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Term
Ventricular Tachycardia
(description) |
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Definition
| An irritable focus in the ventricles fires regularly at a rate of 150-250 bpm to override higher sites for control of the heart |
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Term
Wandering Pacemaker
(description) |
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Definition
| The pacemaker site wanders between the SINUS node, the ATRIA, AV JUNCTION. Each beat originates from a different site, but conduction through the ventricles is normal |
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Term
Type II Second Degree Heart Block
(description) |
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Definition
| The AV NODE selectively conducts some beats while blocking others. Those that are not blocked are conducted through to the ventricles, but there may be a slight delay. |
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Term
Complete Heart Block (3o)
(description) |
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Definition
The block at the AV NODE is complete. Sinus impluses are not conducted through to the ventricles, an escape mechanism from the ventricles or junction will take over.
Atria and ventricles function is a completely dissociated fashion. |
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Term
First Degree heart Block
(description) |
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Definition
| The AV NODE holds each sinus impulse longer than normal before conducting it through to the ventricles |
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Term
Atrial Fibrillation
(description) |
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Definition
The ATRIA are so irritable that a multitude of foci initiate impulses, causing the atria to depolarize repeatedly in a fibrillatory manner.
The AV Node blocks most of the impulses, some make it through |
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Term
Atrial Tachycardia
(description) |
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Definition
| The pacemaker is a single irritable site within the ATRIUM that fires repetitively at a very rapid rate |
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Term
Atrial Flutter
(description) |
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Definition
| A single irritable focus within the ATRIA issues an impulse that is conducted in a rapid, repitive fashion. The AV node blocks some impulses to protect the ventricles from receiving too many impulses |
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Term
Type 1 Second Degree Heart Block: Wenkebach
(description) |
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Definition
| As the sinus node initiates impulses, each one is delayed in the AV NODE a little longer than the preceeding one, until one is eventually blocked completely. |
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Term
Sinus Arrhythmia
(description) |
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Definition
| The SINUS node is the pacemaker, but impulses are initiated in an irregular pattern. The rate can increase as the patient inspires and decrease as the patient breathes out |
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Term
Junctional Tachycardia
(description) |
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Definition
| An irritable focus in the AV JUNCTION speeds up to override the SA node for control of the heart. The atria are depolarized via retrograde conduction. |
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Term
Accelerated Junctional Rhythm
(description) |
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Definition
| An irritable focus in the AV JUNCTION speeds up to override the SA node for control of the heart. The atria are depolarized via retrograde conduction. |
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Term
Junctional Excape Rhythm
(description) |
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Definition
| When higher pacemaker sites fail, the AV JUNCTION is left with the pacemaking responsiblity. The atria are depolarized via retrograde conduction. |
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Term
Normal Sinus Rhythm
(description) |
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Definition
| Sinus node is the pacemaker, firing at a regular rate. |
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Term
Sinus Tachycardia
(description) |
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Definition
| Sinus node is the pacemaker, firing regularly at a rate >100 |
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Term
Sinus Bradycardia
(description) |
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Definition
| The SINUS NODE is the pacemaker, firing regularly at rate <60 |
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Term
| Pacemaker sites and Rates |
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Definition
SA NODE 60-100
AV NODE 40-60
VENTRICLES 20-40 |
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