EKG Final Review

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.

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 t-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

The nurse is determining the functioning of a patient’s sinoatrial node. How many times per minute should the nurse expect the node to normally fire?

• 20 to 40

• 25 to 55

• 40 to 85

• 60 to 100

The nurse determines that a patient’s electrocardiogram is demonstrating normal sinus rhythm. What did the nurse observe to come to this conclusion? (Select all that apply.)

• Regular rhythm

• P wave before each QRS complex

• Wide QRS intervals

• Heart rate 88 beats per minute

V1

• LEFT side of the sternum, directly across from V1 at the FOURTH intercostal space

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• RIGHT side of the sternum at the FOURTH intercostal space

• LEFT side of the chest, FIFTH intercostal space, midaxillary line

V2

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• LEFT side of the sternum, directly across from V1 at the FOURTH intercostal space

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• LEFT side of the chest, FIFTH intercostal space, anterior axillary line

V3

• LEFT side of the chest, FIFTH intercostal space, midaxillary line

• RIGHT side of the sternum at the FOURTH intercostal space

• LEFT side of the chest, FIFTH intercostal space, anterior axillary line

• LEFT side of the chest, midway between V2 and V4

V4

• LEFT side of the chest, FIFTH intercostal space, midclavicular line

• LEFT side of the chest, midway between V2 and V4

• LEFT side of the chest, FIFTH intercostal space, midaxillary line

• LEFT side of the sternum, directly across from V1 at the FOURTH intercostal space