EKG

Question 1

What is the order to follow when analyzing EKG?

Answer 1

Rate
Rhythm
Intervals (PR, QRS, QT)
Axis
P wave
QRS wave
ST interval

Question 2

What are the normal intervals for
PR?
QRS?
QT?

Answer 2

PR < 0.12 or LBBB or RBBB

QT </= 1/2 of RR

Question 3

What are the values for 
Normal Axis?
Left Axis Deviation?
Right Axis Deviation?
Extreme Right Axis Deviation?

Answer 3

I+ and AVF+
I+ and AVF-
I- and AVF+
I- and AVF-

Question 4

What are the leads evaluated for P wave?

Answer 4

II

V1

Question 5

What are the values for the P wave for
Normal?
Right Atrial Enlargement?
Left Atrial Enlargement?

Answer 5

P wave

N: II < 1 mm high and LA < 1 mm down and wide

RAE: II >/= 3 mm high
RAE: V1 RA > 1 mm tall

LAE: II > 3 mm wide
LAE: V1 > 1 mm down and wide

Question 6

What does the QRS evaluate?

Answer 6

LBBB
RBBB
LVH
RVH
MI anterior
MI inferior

Question 7

What leads indicate
LBBB?
RBBB?

Answer 7

QRS >/= 0.12

LBBB:
V6 + QRS and ST depression in leads with late positivity
V1 normal - QRS (+ST)

RBBB:
V1 RSR’ with broad R’ and ST depression in leads with late QRS positivity
V6 normal

Note: LBBB is similar to LVH, so further analysis necessary