ECG Leads and Basic Interpretation Quiz

ECG Leads and Basic Interpretation Quiz

University

8 Qs

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ECG Leads and Basic Interpretation Quiz

ECG Leads and Basic Interpretation Quiz

Assessment

Quiz

Other

University

Hard

Created by

Simerjit Singh

FREE Resource

8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of an Electrocardiogram (ECG)?

Assess lung function

Monitor oxygen levels

Record cardiac conduction

Measure blood pressure

Answer explanation

The purpose of an Electrocardiogram (ECG) is to record cardiac conduction, not to assess lung function, monitor oxygen levels, or measure blood pressure.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the Q-T interval defined in an ECG recording?

From start of atrial depolarization to start of QRS

Time required for ventricles to undergo a single cycle of depolarization and repolarization

Measured from end of P-R to end of T

From the end of one wave to the start of another

Answer explanation

Measured from end of P-R to end of T

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the (5 x 5) mm square on ECG graph paper represent?

0.04 seconds

0.1 mV

0.2 seconds

0.5 mV

Answer explanation

The (5 x 5) mm square on ECG graph paper represents 0.2 seconds.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can heart rate be calculated using Method 1 in ECG analysis?

Count the number of small (0.04-second) time boxes between two successive R waves and divide by 300

Count the number of cardiac cycles that occur every 6 seconds and multiply by 10

Count the number of large (0.2-second) time boxes between two successive R waves and divide by 1500

Count the number of large (0.2-second) time boxes between two successive R waves and divide by 300

Answer explanation

Count the number of small (0.04-second) time boxes between two successive R waves and divide by 300

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What defines a sinus rhythm in ECG analysis?

QRS up in I and down in aVF

Variable PR interval

P wave is negative in lead I, II

Each P wave is followed by QRS

Answer explanation

Each P wave is followed by QRS, which defines a sinus rhythm in ECG analysis.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the P wave in an ECG recording?

Represents atrial depolarization

Indicates ventricular repolarization

Reflects ventricular depolarization

Measures atrial repolarization

Answer explanation

The P wave in an ECG recording represents atrial depolarization, making it the correct choice.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the ST segment interpreted in ECG analysis?

Represents ventricular depolarization

Indicates atrial repolarization

Reflects ventricular repolarization

Measures atrial depolarization

Answer explanation

The ST segment in ECG analysis reflects ventricular repolarization, not atrial depolarization or other cardiac events.

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the T wave signify in an ECG reading?

Represents atrial repolarization

Indicates ventricular depolarization

Reflects atrial depolarization

Measures ventricular repolarization

Answer explanation

The T wave in an ECG reading measures ventricular repolarization, indicating the recovery phase of the ventricles.