Practical study 20

Specify which ECG interval is called the electrical systole of the ventricles

• PQ

• QRS          

• QRST

• ST

Specify what the normal amplitude of the Q wave should be

           

• no more than 1/6 of the amplitude of the next  R wave

• no more than 1/6 of the amplitude of the previous R wave

• no more than 1/5 of the amplitude of the next R wave

•  no more than 1/4 of the amplitude of the next R wave

• no more than 1/4 of the amplitude of the previous R wave

What is the normal dynamics of the R wave in leads V1-V6?

        

•   increases from V2 to V5, then decreases

• decreases from V2 to V5, then increases

• increases from V1 to V4, then decreases

• decreases from V1 to V4, then increases

Which segment reflects the electrical diastole of the heart?

• PQ segment

• QT

  segment

• ST segment

• TP segment

Select all the characteristics a normal p-wave should have?

• One p-wave should accompany a QRS complex.

• They should measure more than 0.36 seconds in duration.

• P-waves should be flat.

• P-waves should be round and upright.

• Multiple p-waves can accompany a QRS complex.

QRS complex should measure no more than?

• 0.20 seconds

• 0.12 seconds

• 0.08 seconds

• 0.04 seconds

5. Once electrical signals pass through the Bundle of His, they next travel to?

• AV node

• Bundle branches

• SA node

• Purkinje Fibers

Which part of the PQRST complex represents ventricular depolarization?

• P-wave

• QRS complex

• T-wave

• ST segment

A normal PR interval should measure between? A

• 0.04-0.12 seconds

• 0.20-0.36 seconds

• 0.12-0.20 seconds

• 0.35-0.40 seconds

The correct sequence of the three major waves found in a normal ECG finding

• P wave , T wave , QRS complex

• QRS complex , P wave , T wave

• T wave , QRS complex , P wave

• P wave, QRS complex, T wave