ECG Interpretation & Analysis Test

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 place where the electrical current starts and is considered the heart's pacemaker:

• Sino-atrial node 
• right atrium
• atria-ventricular node 
• left ventricle

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

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

• SA/AV node

• Bicuspid valve

• Bundle of His

• Purkinje fibers

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

• QRS
• P-Q wave
• P wave only 
• T wave

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

• T-wave  
• S-T waves
• R wave 
• QRS

Which letter(s) indicates that the ventricles are relaxing? 

• P-wave
• S-T Waves
• QRS 
• T-wave

If the R wave is irregular, which chamber is enlarged with blood? 

• Ventricles 
• Atria 
• Vena cava 
• Aorta 

What is damaged within the heart to cause the R wave to be irregular & the ventricles enlarged?

• AV node

• Semi Lunar valves

• Coronary arteries

• AV Valves

An electrocardiogram measures what?

• The amount of pressure exerted on blood vessels.
• The electrical activity of the heart.
• How many times the heart contracts over time.
• The body's temperature caused by friction of blood in vessel.