[CVS] Q.18) Define tachycardia with cause:

Ans:

It means increase heart rate above 100 beats/min.

Cause:

A) Physiological :

1. Increase in Sympathetic activity (exercise, emotion)
2. Pregnancy

B) Pathological:

1. Anxiety
2. Fever
3. Anemia
4. Heart failure
5. Thyrotoxicosis
6. Drugs : beta-adrenoceptor agonists