EKG Module II Quiz

What is the function of the cardiac conduction system?

• Producing red blood cells

• Controlling body temperature

• Regulating blood pressure

• Coordinating the electrical activity of the heart

Explain the role of the sinoatrial node in the cardiac conduction system.

• It is responsible for producing insulin.

• It regulates the body's temperature.

• It controls the amount of oxygen in the blood.

• It initiates the electrical impulses that regulate the heart's rhythm.

Where are the standard limb leads placed for an EKG?

• On the right arm, left arm, and left leg

• On the left arm, left leg, and right leg

• On the right leg, right arm, and left arm

• On the head, chest, and back

Describe the process of placing precordial leads for an EKG.

• Put the V4 lead at the fourth intercostal space in the midclavicular line

• Position the V1 lead at the fourth intercostal space just to the right of the sternum, and the V2 lead at the fourth intercostal space just to the left of the sternum. Place the V4 lead at the fifth intercostal space in the midclavicular line, the V3 lead between V2 and V4, the V5 lead at the anterior axillary line at the same level as V4, and the V6 lead at the midaxillary line at the same level as V4 and V5.

• Position the V2 lead at the third intercostal space just to the right of the sternum

• Place the V1 lead at the fifth intercostal space just to the left of the sternum

What are some common EKG artifacts and how can they be minimized?

• Use low-quality electrodes and ensure patient movement during the test

• Maximize patient movement during the test

• Ensure proper skin preparation, use high-quality electrodes, and minimize patient movement during the test.

• Skip skin preparation and use any type of electrodes

How can patient movement affect EKG readings?

• The time of day the EKG is performed

• The patient's blood pressure

• Artifacts in the EKG readings

• Patient's age and gender

What do the P, QRS, and T waveforms represent in an EKG?

• Atrial depolarization, ventricular repolarization, and atrial repolarization

• Atrial depolarization, ventricular depolarization, and ventricular repolarization

• Ventricular depolarization, atrial repolarization, and ventricular repolarization

• Atrial repolarization, ventricular repolarization, and atrial depolarization

Explain the purpose of a Holter monitor in monitoring cardiac activity.

• To monitor oxygen saturation in the blood

• To continuously record the heart's electrical activity over a period of time

• To track the number of steps taken by the patient

• To measure blood pressure levels

What is the purpose of an EKG stress test?

• To assess lung function

• To monitor brain activity during sleep

• To monitor the heart's electrical activity and detect abnormalities during physical activity

• To measure blood pressure during rest

Describe the function of the atrioventricular node in the cardiac conduction system.

• Sends the electrical impulse directly to the ventricles without delay

• Delays the electrical impulse to allow the atria to fully contract before the ventricles contract

• Regulates the blood pressure in the heart

• Causes the atria and ventricles to contract simultaneously