EKG Quiz 2b

1. Q19) The number of R waves in six second strip is 9. The heart rate is:

72 per minute

45 per minute

90 per minute

54 per minute

2. Q27) The limb sensor which placed in Left 5th ICS at Anterior axillary line ?

V1

V2

V5

V6

3. Q23) The apex of the heart:

Points downwards and to the left

Points downwards and to the right

Points upwards and to the left

Points upwards and to the right

4. Q25) The number of Large squares between the R waves is 5. What is Heart Rate?

60 bpm

75 bpm

100 bpm

120 bpm

5. Q24) The number of Small Squares is 20 in between the R waves. What is the Heart Rate?

150 bpm

75 bpm

100 bpm

120 bpm

6. Q26) The limb sensor which is placed between Right arm and Left arm?

Lead III

Lead II

Lead I

None of the Above

7. Q22) The correct lead from the center of heart of the positive pole of the left leg is:

Lead II

Lead III

Lead AVR

Lead AVF

8. Q29) This is an Arrhythmia produced by an Electrical impulse originating from a site other than the sinus node?

Pre-Excitation syndrome

Arrhythmia of sinus origin

Conduction Blocks

Ectopic Rhythms

9. This represents the time taken it takes to travel from the atria to the AV Node, Bundle of His, Bundle branches and to Purkinjee fibers?

PR Interval

PP Interval

RR Interval

QT Interval

10. Q20) Which of the following is incorrect of the augmented unipolar extremity leads:

They represent the difference in the electrical potential between two extremities

The midpoint between two limbs is used as a negative reference point

Only one electrode from one limb makes a lead

The amplitude of deflections is increased by 50%

11. Q21) Matching:

SA Node

Internodal Pathways

AV node

Bundle of His

Bundle Branches

12. Q27) What is the cause for Wandering Baseline in the EKG?

Due to patient Shivering or shaking the Cables

Due to excessive sweating due to exercise

Coffee Consumption

Due to improperly grounded Electrical equipments (cellular phones, Pagers)

13. Q30) Which wave represents Repolarization of Purkinjee Fibres?

P wave

QRS complex

T wave

U wave