EKG/ECG

Question 1

P wave

Answer 1

Atrial depolarization (contraction)

Question 2

Segment

Answer 2

The space between two waves

Question 3

ST segment

Answer 3

Ending of ventricular contraction to the beginning of ventricular relaxation

Question 4

PR Segment

Answer 4

Ending of atrial contraction to the beginning of ventricular contraction

Question 5

QT interval

Answer 5

Beginning of the ventricular contraction to the end of ventricular relaxation

Question 6

T wave

Answer 6

Ventricles relaxing

Question 7

PR Interval

Answer 7

Start of the P wave to the start of the QRS complex

Start of atrial depolarization to the beginning of ventricular depolarization

Question 8

Baseline is also know as

Answer 8

Polarization

Question 9

Speed

Answer 9

25mm/sec

Question 10

Height

Answer 10

10mm

Question 11

Bipolar leads

Answer 11

1,2,3

Question 12

V1-V6 are also known as

Answer 12

Precordial leads and chest leads

Question 13

Artifacts

Somatic Tremor

Answer 13

Also known as muscle artifact, voluntary and involuntary movement

Question 14

Artifacts -

Wandering baseline:

Answer 14

Caused by electrode issues

Examples: Lotion or hair

Question 15

Artifacts-

Alternating current:

Answer 15

60 cycle - caused by electronics, and electrical interference