Flashcards in Ventricular Rhythms Deck (39):
0
How long is the QRS measurement with ventricular rhythms?
Greater than .12 second
1
What are five ventricular rhythms?
Premature ventricular complexly (PVC)
Ventricular tachycardia
Ventricular fibrillation
Idioventricular rhythm
Asystole
2
Are p waves visible with ventricular rhythms?
No. The atria aren't being conducted
3
What is the relationship between QRS and T waves with premature ventricular complexes?
T wave extends in opposite direction of QRS complex
4
What is an interpolated PVC?
When the PVC is between two regular beats
5
What is a compensatory pause?
When the PVC takes place of a beat and the surround RRI is doubled the normal RRI
6
What are PVCs an indication of?
Myocardial irritability
7
What are unifocal PVCs?
PVCs that have the same configuration throughout the EKG. They come from a single focus
8
What are multifocal PVCs?
PVCs with two or more configurations along the EKG. There are multiple foci initiating ectopics
9
What is R on T phenomenon?
When the R wave of a PVC falls during the relative refractory period of the T wave
10
What is a PVC couplet?
When two PVCs are attached to each other
11
What is a run of PVCs?
When three or more PVCs follow each other
12
What is grouped beating?
When frequently occurring PVCs occur in pattern with normal beats
13
What is bigeminy?
When every other beat is a PVC
14
What is it called when there's a repetitive cycle of a PVC followed by three normal beats?
Trigeminy
15
What is quadrigeminy?
A repetitive cycle of four beats followed by a PVC
16
Premature Ventricular Complex
Regularity
Disrupts regularity of underlying rhythm
17
Premature Ventricular Complex
Rate
Depends on underlying rhythm
18
Premature Ventricular Complex
P wave morphology
No P waves
19
Premature Ventricular Complex
PRI
None
20
Premature Ventricular Complex
QRS
Wide and bizarre
Greater than .12 seconds
T wave in opposite direction
21
Ventricular tachycardia
Regularity
Usually regular or slightly irregular
22
Ventricular tachycardia
Rate
150-250
Can be faster or slower
23
Ventricular tachycardia
P wave morphology
No p waves
24
Ventricular tachycardia
PRI
None
25
Ventricular tachycardia
QRS
Wide and bizarre
Greater than .12
T wave in opposite direction of R wave
26
What does ventricular tachycardia look like?
A run of PVCs that last the whole strip
27
What is ventricular tachycardia caused by?
A single irritable focus in the ventricles
28
What is the difference between ventricular tachycardia and ventricular flutter?
The rate
Ventricular flutter is faster (300 bpm)
29
What does ventricular fibrillation look like?
Chaotic, irregular activity with no waves or complexes
30
How are idioventricular rhythms initiated?
By the escape mechanism of the heart
31
What ventricular rhythm is an agonal rhythm?
Idioventricular rhythm
32
Idioventricular rhythm
Regularity
Usually regular
33
Idioventricular rhythm
Rate
20-40
Can drop below 20
34
Idioventricular rhythm
P wave morphology
None
35
Idioventricular rhythm
PRI
None
36
Idioventricular rhythm
QRS
Wide and bizarre
.12 or greater
37
What do you see with asystole?
No electrical activity
Just a straight line
38