EKG deck 3

Question 1

EKG interpretation

Answer 1

R ventricular Hypertrophy

R axis deviation? yes

How many mm for R in V1 + S in V5 = 9+ 15 = 24 mm

Is it greater than 10 mm? yes

Question 2

EKG interpretation

Answer 2

L ventricular Hypertrophy

R axis deviation? no, so not RVH

How many mm is the S in V1 + R in V5? 20+15 = 35

is it greater or equal to 35? yes

Question 3

What might you see with the QRS for a bundle branch block?

Answer 3

Either two QRS s out of phase (rabbit ears)

or a wide QRS (looks like mountain tops)

Question 4

Answer 4

R Bundle Branch Block

Question 5

Answer 5

L Bundle Branch Block

Question 6

When looking for a Right bundle branch block, what 3 leads are you checking?

Answer 6

Lead I

V1

V6

Question 7

Diagnostic criterion for a Right Bundle Branch Block

Answer 7

QRS widening to at least 0.11 seconds but not wider

A rSR or RsR in Right sided lead V1

A wide terminal S wave in leads 1 and V6

QRS is usually predominantly positive in V1

Question 8

Diagnostic criterion for a LBBB

Answer 8

QRS widening to at least 0.12 seconds

An upright QRS complex in Leads 1 and V6

The QRS may be notched, but there should not be and q wave in either lead 1 or V6

A predominantly negative QRS complex in lead V1

Question 9

What is it?

Answer 9

L Bundle Branch Block

Wide QRS in Lead I and V6? yes

What is the direction of the terminal forces in v1? Down so its Left

Question 10

What is it?

Answer 10

R Bundle Branch Block

Wide QRS in Lead I and V6? no

What is the direction of terminal forces in V1? positive

Right BBB

Question 11

What is it?

Answer 11

L Bundle Branch Block

Wide QRS in Lead I and V6? yes

What is the direction of terminal forces in V1? down

LBBB