EKG List 3

Atrial Depolarization

Contraction of the atria through electrical impulse

QRS Complex

Ventricular wave/impulse ventricular depolarization

T wave

Ventricular Recovery ventricular repolarization

Rate

atrial and ventricular beats per minute

Rhythm

Atrial and ventricular regular or irregular

Regular

The QRS occurs at regular intervals

Irregular

Patterned irregularity eg, every third beat is early

Irregularly irregular

Random irregularity without a pattern

Heart block

A disturbance in the conduction system of the heart

Right Side

low pressure system sends blood to lungs

Left Side

High pressure sends blood out to the body

Systole

contraction serves to empty the chambers, pump blood out

Diastole

relaxation ¨filling time¨ serves to fill the chambers with blood

Endocardium

innermost layer (inside) must be smooth

Myocardium

muscular layer (think)

Epicardium

outer layer/surface on the muscle surface

Pericardium

outermost layer, thick and fibrous job is to protect the heart

Right Coronary Artery (RCA)

Supplies blood to Right Ventricle

12 leads (view of the heart)

10 lead wires (wire attachments on the body)

Stress Testing

noninvasive test to evaluate heart disease evaluates the heart's function