Electrocardiography Basics

To record the heart's electrical activity through repeated cardiac cycles (correct)

To measure the overall magnitude of the heart's electrical potential

To monitor inadequate coronary artery blood flow

To detect changes in the normal ECG pattern

Cardiac murmurs, myocardial infarction, and myocardial ischemia

Cardiac rhythm disturbances, inadequate coronary artery blood flow, and electrolyte disturbances (correct)

Aortic valve stenosis, ventricular tachycardia, and atrial fibrillation

Pulmonary embolism, pericarditis, and hypertrophic cardiomyopathy

The blood flow through coronary arteries

Small electrical changes resulting from cardiac muscle depolarization followed by repolarization during each cardiac cycle (correct)

The heart rate and rhythm

The overall voltage of the heart's electrical potential

<p>From twelve different angles using ten electrodes placed on the patient's limbs and chest</p> Signup and view all the answers

<p>&quot;ECG&quot; usually means a 12-lead ECG taken while lying down</p> Signup and view all the answers