Cardiology and EKG Technology Quiz

What is depolarization in the heart?

• A type of ambulatory monitor that records heart rate and rhythm

• A test that uses sound waves to visualize the heart

• An electrical change where cells become more negative and relax

• An electrical change where cells become more positive and contract

What is the function of electrodes in EKG technology?

• To measure voltage at an electrically positive pole

• To conduct electricity and connect to the patient's body

• To create marks on the EKG paper

• To visualize the heart using sound waves

What is an echocardiogram?

• A mechanism to adjust the height of EKG markings

• A test that uses sound waves to visualize the heart

• A type of ambulatory monitor for heart rate

• A record of the electrical activity of the heart

What does telemetry allow in EKG technology?

• Recording of the electrical activity of the heart in 12 directions

• Evaluation of heart function under stress

• Continual monitoring of a patient's heart rate and rhythm

• Visualization of the heart using sound waves

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is a Holter monitor used for?

• To visualize the heart using sound waves

• To detect heart rate irregularities automatically

• To record heart rate and rhythm when symptoms occur

• To evaluate heart rate and rhythm over an extended period

What is the purpose of a stress test?

• To evaluate heart function under controlled stress

• To conduct electricity and connect to the patient's body

• To record heart rate and rhythm over an extended period

• To visualize the heart using sound waves

What are limb leads in electrocardiography?

• Leads I, II, and III; also known as the bipolar leads

• Leads that measure voltage at an electrically positive pole

• Leads aVR, aVL, and aVF; also known as augmented limb leads

• Leads V1, V2, V3, V4, V5, and V6; also known as chest leads

What is Einthoven's triangle?

• The imaginary triangle formed by the placement of electrodes for limb leads

• A type of ambulatory monitor for heart rate

• A mechanism to adjust the height of EKG markings

• The center of the triangle that acts as a neutral reference point

Tags

NGSS.HS-PS2-5

What is an artifact in electrocardiography?

• A type of ambulatory monitor for heart rate

• A test that uses sound waves to visualize the heart

• A mechanism to adjust the height of EKG markings

• A distortion that appears on a tracing

What is the standard gain setting for an EKG machine?

• 5 millimeters per millivolt

• 20 millimeters per millivolt

• 15 millimeters per millivolt

• 10 millimeters per millivolt