Week 5

Question 1

what are the characteristics of a normal P wave?

Answer 1

0.08 - 0.10 sec
upright positive direction
precedes qrs

Question 2

how does the p wave morphology look in the case of right and left atrial hypertrophy

Answer 2

Right - Skewed to the left

Left - M shape

Question 3

What is the time in seconds of a normal PR interval

Answer 3

0.12 - 0.20 sec

Question 4

What is a delta wave?

Answer 4

curve in the start of the R wave

Signifies another electrical impulse coming from the Kent Bundle

• sign of wolf parkinson white

Question 5

what are the characteristics of a normal Q wave?

Answer 5

First negative deflection of QRS

• 0.04 seconds
• <25% height of succeeding R wave

Question 6

what are the characteristics of a normal R wave?

Answer 6

first positive deflection of QRS

Question 7

what are the characteristics of a normal S wave?

Answer 7

first negative deflection below baseline after R wave in QRS

Question 8

what are the characteristics of a normal QRS wave?

Answer 8

0.08 -0.12 seconds

Question 9

what are the characteristics of a normal T wave?

Answer 9

0.10 - 0.25 seconds
<5mm
normally upright

Question 10

what are the characteristics of a normal QT interval?

Answer 10

less than half of RR

Question 11

what are the characteristics of a normal ST segment

Answer 11

> 0.20 seconds from end of QRS to beginning of T

Question 12

Where is the J point?

Answer 12

End of QRS and start of ST