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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

What is the only way to treat ventricular fibrillation?

Defibrillating