Atrial Rhythms

Question 0

How is the morphology of atrial arrhythmia’s P-wave (5)

Answer 0

Flattened
Notched
Peaked
Sawtoothed
Diphasic

Question 1

When are atrial rhythm caused?

Answer 1

When the atrial rate becomes faster than the sinus rate

Question 2

What does diphasic mean?

Answer 2

There is an upward deflection and then dips below the isoelectric line

Question 3

When is the wandering pacemaker caused?

Answer 3

When the pacemaker role switches from beat to beat from the SA node to the atria and back again

Question 4

Wandering pacemaker

Regularity

Answer 4

Slightly irregular

Question 5

Wandering pacemaker

Rate

Answer 5

60-100

Not more than 150

Question 6

Wandering pacemaker

P wave morhphology

Answer 6

Morphology changes from one complex to the next

Question 7

Wandering pacemaker

PRI time

Answer 7

Less than .20

Varies

Question 8

Wandering pacemaker

QRS time

Answer 8

Less than .12 second

Question 9

What is an ectopic beat?

Answer 9

A single beat that arises from a focus outside the SA node

Question 10

When does an ectopic beat initiate?

Answer 10

When a site somewhere becomes irritable and overrides the SA node for a single beat

Question 11

An early or premature ectopic beat indicates what?

Answer 11

Irritability

Question 12

An ectopic beat that is preceded by a prolonged R-R cycle is what?

Answer 12

Escape beat

Question 13

What is an atrial ectopic caused by irritability called?

Answer 13

Premature Atrial complex (PAC)

Question 14

Premature Atrial Complex

Regularity

Answer 14

Depends on underlying rhythm

Question 15

Premature Atrial Complex

Rate

Answer 15

Depends on underlying rhythm

Question 16

Premature Atrial Complex

P wave morphology (3)

Answer 16

Flattened
Notched
Lost in preceding t wave

Question 17

Premature Atrial Complex

PRI

Answer 17

.12-.20

Can exceed .20

Question 18

Premature Atrial Complex

QRS

Answer 18

Less than .12

Question 19

What is atrial tachycardia?

Answer 19

When a single focus in the atria become so irritable it overrides the SA node for the entire rhythm

Question 20

Atrial tachycardia

Regularity

Answer 20

Regular

Question 21

Atrial tachycardia

Rate

Answer 21

150-250

Question 22

Atrial tachycardia

P wave morphology

Answer 22

Atrial p waves (flattened, notched, diphasic)

Can be lost in t wave

Question 23

Atrial tachycardia

PRI time

Answer 23

.12-.20

Question 24

Atrial tachycardia | QRS time

Answer 24

Less than .12

Question 25

What is atrial flutter?

Answer 25

When the atrial become so irritable that they fire faster than 250 bpm

Question 26

What is a variable block?

Answer 26

When the AV node becomes very erratic about conducting impulses the ratio between F waves and QRS complexes can vary which creates and irregular RRI

Question 27

Atrial flutter | Regularity

Answer 27

Atrial rhythm is regular | Ventricle rhythm usually is regular unless there's a variable block

Question 28

Atrial flutter | Rate

Answer 28

250-350

Question 29

Atrial flutter | P wave morphology

Answer 29

Sawtooth pattern

Question 30

Atrial flutter | PRI

Answer 30

Unable to determine

Question 31

Atrial flutter | QRS

Answer 31

Less than .12 second

Question 32

What is atrial fibrillation?

Answer 32

When the atrial become so irritable they are no longer beating but are quivering ineffectively

Question 33

What are the fibrillatory waves of atrial fibrillation called?

Answer 33

f waves

Question 34

What is atrial fibrillation with a rapid ventricular response (uncontrolled)?

Answer 34

Atrial fibrillation with a rate greater than 100

Question 35

Atrial fibrillation | Regularity

Answer 35

Grossly irregular

Question 36

Atrial fibrillation | Rate

Answer 36

Atrial rate greater than 350 | Ventricular rate varies

Question 37

Atrial fibrillation | P wave morphology

Answer 37

No discernible p waves (f waves)

Question 38

Atrial fibrillation | PRI

Answer 38

Unable to measure

Question 39

Atrial fibrillation | QRS

Answer 39

Less than .12

Question 40

What are little f waves a sign of?

Answer 40

Fibrillation

Question 41

What are big F waves used for?

Answer 41

Fluttering