Arrythmias

Question 1

functions of the SAN node

Answer 1

initiates electrical impulses or excitation

Question 2

function of the AV node

Answer 2

Conduct the electrical signal to the apex of the heart.
Delay transmission of action potentials slightly, to ensure the complete contraction of the atria

Question 3

cardiac arrhythmias

Answer 3

An abnormality of the cardiac rhythm

Question 4

some possible effects of arrythmias

Answer 4

sudden death, syncope,heart failure, dizziness, palpitations

Question 5

there are 2

types of arrythmias and their descriptions

Answer 5

Bradycardia(the heart rate is slow). HR less than 60b.p.m
Tachycardia(the heart rate is fast). HR more than 100b.p.m

Question 6

some factors that could cause arrythmias

Answer 6

Acid-base imbalances* Cellular hypoxia* Congenital defects* Connective tissue disorders* Degeneration of the conductive tissue* Drug toxicity* Electrolyte imbalances* Emotional stress* Hypertrophy of the heart muscle* Myocardial ischemia or infarction* Organic heart disease

Question 7

Tachyarrhythmias

Answer 7

Tachyarrhythmias refer to abnormal heart rhythms (arrhythmias) characterized by a faster-than-normal heart rate

Question 8

(SVTs)supraventricular Tachyarrhythmias

Answer 8

tachyrrhythmias above the vevntricles

Question 9

some examples of conditions characterized by SVTs

Answer 9

Atrial fibrillation
Sinus tachycardia
Atrial tachycardia
Atrial flutter
Atrioventricular nodal re-entry tachycardia (AVNRT ) – re-entry
AVRT