EKG Basics

What is the direction of positive charges in an EKG when they are flowing towards the positive electrode?

• Upward deflection

• Downward deflection

• No electrical activity

• Flat line

The p-wave correlates with which event?

• atrium contraction /signals moving from SA node to AV node

• ventricle contraction

• ventricle repolarization

• both atrial and ventricle contraction

The QRS-wave correlates with which event?

• atrium contraction /signals moving from SA node to AV node

• ventricle contraction

• ventricle repolarization

• both atrial and ventricle contraction

What is considered the QRS complex?

• A, B, & C

• C, D, & E

• B, C, & D

• D & E

What is the T wave located?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS2-5

Which letter(s) indicates the health of the ventricles?

• T-wave  

• S-T waves

• R wave 

• QRS

Which letter(s) indicates the health of the atria?

• QRS

• P-Q wave

• P wave only 

• T wave

If there is a flat P wave which structures in the heart are damaged?

• SA/AV node

• Bicuspid valve

• Bundle of His

• Purkinje fibers

If the p-wave is high/irregular. What is happening to the atria chamber? 

• Blood is traveling too fast

• Blood is remaining in the chamber 

• SA node is damaged

• Heart is not getting enough Oxygen

The components that indicate the QRS complex is...

• a,b,c

• b,c,d

• c,d,e

• b,d,e