About Ekg

Question 0

What do EKG waveforms represent?

Answer 0

These waveforms represent impulses that cause the myocardium to contract and relax.

Question 1

What does an EKG record?

Answer 1

The electrocardiogram is a valuable diagnostic tool. It records the electrical activity of the heart as waveforms.

Question 2

What is the significance of comparing EKG to old EKG ?

Answer 2

Whenever possible compare an old ECG tracing to your current ECG tracing, and look for changes.

Question 3

Can an EKG stand on its own merit?

Answer 3

As with any diagnostic test, an ECG does not stand alone. So, obtain a complete history and view results in light of history and physical exam.

Question 4

Is an EKG 100% sensitive?

Answer 4

The ECG is not 100% specific or sensitive.

Question 5

What information does the EKG provide.

Name 6

Answer 5

Information provided by the ECG

Rhythm/rhythm disturbances
Conduction abnormalities 
Electrolyte disturbances 
Medication/drug effects 
Chamber enlargement Ischemia
Mass of cardiac muscle
 Orientation of heart in the chest

Question 6

Why are EKG electrodes placed in different locations?

Answer 6

Because the heart radiates electrical activity in all directions to the skin, we place electrodes in different locations to get a complete picture of the heart’s electrical activity.

Question 7

Leads provide a view of the heart’s electrical activity between ___________ .

Answer 7

two points.

Question 8

Each lead has a ____________.

Answer 8

Each lead has a negative and positive pole.