Test 2 EKGs

Question 1

What is seen with R bundle branck block?

Answer 1

Slurred S wave on V6/I
rSR’ wave on V1 over 120msec
T wave deflected opposite QRS complex

Question 2

What is seen with L bundle branch block?

Answer 2

Biphasic RsR’ on V6/I
Wide QS complex on V1
discordant T wave

Question 3

What is seen with LVH?

Answer 3

VI S wave + V6 R wave > 35mm
must be over 40 y/o
ST segment depression

Question 4

What is seen with RVH?

Answer 4

R axis deviation: negative QRS on lead I
deep S wave on V6
R/S>1 in V1

Question 5

What is seen with R atrial abnormality?

Answer 5

Either
P wave >1.5mm on lead V1
or P wave >2.5mm on II

Question 6

What is seen with L atrial abnormality?

Answer 6

Either
P wave depth and width >1mm on V1
or P wave > 120msec duration