Rhythm Types

Question 1

Sinus Rhythm dx criteria? (3)

Answer 1

1) P waves present
2) P waves all similar
3) P:QRS = 1:1

Question 2

Sinus Rhythm rate?

Sinus Tachy?

Sinus Brady?

Answer 2

60-100

> 100

<60

Question 3

Jxn’l Rhythm dx criteria? (2)

Answer 3

1) Inverted P’s w/ short PRI or No P’s

2) QRS unchanged

Question 4

Jxn’l Rhythm rate?

Answer 4

40-60

Question 5

Vent Rhythm dx criteria? (3)

Answer 5

1) No P’s
2) QRS always wide, ugly, bizarre
3) ST and T ∆s in opp direction of major QRS direction

Question 6

Vfib rate?

V Tachy?

TdP?

IVR?

Answer 6

totally chaotic

100-200

150-250

20-40

Question 7

AV Conduction Blocks: 1°?

Answer 7

P’s present and similar
PRI long
1:1

Question 8

Other AV Conduction Blocks: 2° Type II?

Answer 8

PR seg is same
P:QRS varies

2:1 or
any other ratio = 2° Type II

Question 9

Other AV Conduction Blocks: 2° Type I and 3°?

Answer 9

PR seg is different

Irregular vent rhythm = 2° Type I

Regular vent rhythm = 3° (P’s and QRS have no relationship)

Question 10

Atrial Rhythms: General ECG characteristic?

Answer 10

No isoelectric line (constant activity)

Question 11

Atrial Rhythm: Narrow Complex Tachy?

Rate?

Answer 11

P’s on T’s

160-240

Question 12

Atrial Rhythm: Atrial Flutter?

Rate?

Answer 12

Sawtooth

250-350

Question 13

Atrial Rhythm: Atrial Fib?

Rate?

Answer 13

Low volt undulations

> 350

Question 14

If P’s are present, possible types of rhythms?

Answer 14

Sinus
Atrial
AV blocks

Question 15

If P’s are NOT present, possible types of rhythms?

Answer 15

Jxn’l (narrow QRS)

Vent (wide QRS)