Electrocardiography Quiz

What is the purpose of an electrocardiogram (EKG)?

• To measure blood pressure

• To record the heart's electrical impulses

• To diagnose lung diseases

• To monitor brain activity

Which leads require a positive and negative pole?

• Bipolar leads

• Augmented leads

• Frontal leads

• Precordial leads

What is the purpose of Einthoven's Triangle?

• To measure blood pressure

• To generate small waveforms on EKG paper

• To create a wrap-around view of the heart

• To interpret the heart's electrical activity

Which leads provide a frontal view of the heart?

• Bipolar leads

• Augmented leads

• Frontal leads

• Precordial leads

Where is the V1 precordial lead placed?

• Right sternal border

• Left sternal border

• Between V2 and V4

• Midclavicular line

What does an up deflection of the QRS complex indicate?

• Impulse traveling toward a positive electrode

• Impulse traveling away from a positive electrode

• No impulse

• Baseline sway

What is the purpose of the sensitivity control on an EKG machine?

• To regulate the speed at which the paper prints out

• To regulate the height of the complexes

• To check the machine's calibration

• To filter out extraneous noise and artifact

What is the main cause of somatic tremors artifact?

• Patient's tremors or shaking wires

• Lotion, sweat, or breathing pattern

• Electrical disturbances plugged in close by

• Frayed or fractured wire or loose electrode

What is the purpose of telemetry in cardiac monitoring?

• To measure blood pressure

• To record the heart's electrical impulses

• To diagnose lung diseases

• To remotely monitor patients' heart activity

What can be set on telemetry to alert rate changes?

• Chart speed

• Sensitivity control

• Standardization

• Alarm limits