EKG Chapter 5 Review

What does QRS duration measurement help in classifying?

• Blood pressure

• Dysrhythmias

• Oxygen levels

• Heart sounds

ECG analysis involves a ________ approach.

• Random

• Systematic

• Casual

• Haphazard

Fill in the blank: The second step in identifying components of the rhythm is ________.

• A) Atrial rhythm (regularity) and rate

• B) Ventricular rhythm and rate

• C) P wave morphology

• D) QRS duration and morphology

Fill in the blank: The fifth step in identifying components of the rhythm is ________.

• A) PR interval

• B) QRS duration and morphology

• C) P wave morphology

• D) Atrial rhythm (regularity) and rate.

What is the first step in determining a ventricular rhythm?

• Measure a P-P interval

• Measure a R-R interval

• Check for irregularities

• Use a caliper.

What is the normal range for the PR interval in seconds?

• 0.10-0.18 s

• 0.12-0.20 s

• 0.15-0.25 s

• 0.20-0.30 s

Why should the PR interval be measured to the closest 0.02 s or 20 ms?

• Because the human eye cannot determine 0.01 s

• To ensure accuracy

• To match standard guidelines

• To avoid errors.

Which part of the ECG represents the time taken for electrical impulse to travel from the atria to the ventricles?

• P Wave

• QRS Complex

• PR Interval

• T Wave

What is the J Point in an ECG?

• A) The start of the P wave

• B) The end of the QRS complex

• C) The peak of the T wave

• D) The start of the QRS complex.

Which component of the ECG is used to measure the QRS duration?

• P wave

• T wave

• QRS complex

• ST segment