ECG/EKG

The PCT is monitoring the client’s electrocardiography (ECG). What does the P wave on the ECG tracing represent?

• Contraction of the atria

• Contraction of the ventricles

• Depolarization of the atria

• Depolarization of the ventricles

The PCT is reviewing a patient’s electrocardiogram. Which wave should the PCT recognize as being the first positive wave in a normal cardiac cycle?

• P wave

• Q wave

• R wave

• S wave

A patient is experiencing electrocardiogram changes. Which wave should the PCT recognize as representing ventricular repolarization?

• Q wave

• R wave

• S wave

• T wave

When disrobing the patient will be undressed from ?

• Waist down with gown open to the front

• Waist up and no lower leg access , gown open to the front

• Waist up, lower leg access and gown open to the front

• Gown open to the front, Waist up and no lower leg access

The multichannel EKG machine is a recorder that monitors

• 10 leads

• 12 leads

• 12 & 5 leads

• 5 leads

The importance of electrodes are

• artifact and interfere

• clean tracing.

• angles and planes.

• needed to transmit the impulses,

Electrocardiograph paper can be displayed

• identified by darker lines

• represents 0.04 seconds

• graph or dot matrix format,with vertical and horizontal line or dots

• five small boxes horizontal

Leads I,II and III are

• travel from a negative

• bipolar

• negative leads

• positive leads

Leads AVL,AVR and AVF are

• bipolar

• unipolar

• augmented

• tracing

P Wave:

• SA Nodes contracts

  Both atria contracts

• Impulses reach the av node 0.10 delay allows

• Repolarization or recovery of the ventricles

• Impulses hit av bundle branch off into two bundles down front of heart into purkinje fibers