ECG

Question 1

atrial muscle depolarization

Answer 1

P wave

Question 2

Ventricular muscle depolarization

Answer 2

QRS

Question 3

first negative deflection that precedes the first positive deflection

Answer 3

Q wave

Question 4

First positive deflection

Answer 4

R wave

Question 5

The negative deflection that follows the positive deflection

Answer 5

S wave

Question 6

Ventricular muscle repolarization

Answer 6

T wave

Question 7

(atrial muscle repolarization) occurs ar approximately the time of the QRS and is masked by the QRS

Answer 7

Tp wave

Question 8

Represents the time from the beginning of atrial muscle depolarization to the beginning of ventricular muscle depolarization

Answer 8

PR interval

Question 9

What is the normal range of the PR interval?

Answer 9

0.12 - 0.20s (0.16s)

Question 10

Represents the total time of ventricular muscle depolarization

Answer 10

QRS interval

Question 11

What is the normal range of the QRS interval?

Answer 11

0.06 - 0.10s (0.08s)

Question 12

Represents the total time of all ventricular muscle electrical activity

Answer 12

QT interval

Question 13

What is the normal range of the QT interval?

Answer 13

0.36 - 0.43s (0.40s)

Question 14

The elapsed time between 2 QRS complexes

Answer 14

RR interval

Question 15

What is the formula to calculate HR from RR interval?

Answer 15

1/RR x 60 = bpm

Question 16

Represents the time between atrial muscle depolarization and ventricular muscle depolarization

Answer 16

PR segment