Electrical Alterations

Question 1

Where do the normal myocardial contraction electrical impulses originated in?

Answer 1

• SA node

Question 2

What is the natural Pacemaker of the Heart?

Answer 2

SA Node

Question 3

Which electrical impulse stimulates the myocardium to contract and relax in a synchronized manner?

Answer 3

SA Node

Question 4

Normal Electrical COnduction is referred to?

Answer 4

Sinus Rhythm

Question 5

Deviations from normal rhythm are referred to?

Answer 5

• Dysrhythmias

- Arrhythmias

Question 6

Causes of dysrhythmias include the following conditions:

Answer 6

Acid–base imbalances
Hypoxia
Congenital heart defects
Connective tissue disorders
Degeneration of conductive tissues (usually as a result of aging)
Drug toxicity
Electrolyte imbalances (especially potassium and calcium)
Stress
Myocardial hypertrophy
Myocardial ischemia or infarction