Basic EKG interpretation II

Question 1

II, III and aVF

Answer 1

for atrial flutter

goes at 300

Question 2

A-V goes at what for atrial fib.

Answer 2

150

Question 3

atrial flutter looks like

Answer 3

a saw in lead II, III and aVF

Question 4

atrial fibrillation looks like

Answer 4

• no p-waves

- irrregularity of QRS’s

Question 5

bundle branch block

Answer 5

conduction through purkinje

Question 6

right bundle branch block

Answer 6

V1 and V6 will show
-wider QRS (greater than 120 ms)
-split the QRS into two halves, early part and terminal
rSR’ in V1, inverted T wave on side of the bundle branch block is normal (secondary T wave change)
qRs V6

Question 7

if block left bundle

Answer 7

V1 rS

V6 R

Question 8

first degree AV block

Answer 8

fixed PR prolongation (greater than 5 small boxes, 1 big box)
-all p waves go to ventricle

Question 9

second degree AV block type I

Answer 9

Mobitz Type I, Wenckebrach (GWI)

• gradual PR prolongation
• see pauses, grouped QRS

Question 10

most common cause for a pause on rhythm strip

Answer 10

non-conducted atrial beat that comes early

Question 11

Second degree type II

Answer 11

Mobitz type II, non-wenckebach (NWII)

• unpredictable AV block
• p waves conduct and then all of sudden they don’t
• conduction can be normal and then not normal
• conduction in ventricle is abnormal too
• bad conduction system
• QRS dropped
• sometime seen with first degree block or bundle branch blocks

Question 12

third degree

Answer 12

AV dissociation

-p waves and QRS don’t talk to each other, doing different things

Question 13

where to look for bundle branch blocks

Answer 13

V1, V6 and lead I

Question 14

do you need a pacemaker for Wenckebach block?

Answer 14

No

Question 15

late depolarization coming towards you and in a right lead (like V1)

Answer 15

RBBB