Any disturbance in the heart‚Äö√Ñ√∂‚àö√ë‚àö¬•s normal rhythmic contraction is called?

Any disturbance in the heart‚Äö√Ñ√∂‚àö√ë‚àö¬•

1.	Any disturbance in the heart‚Äö√Ñ√∂‚àö√ë‚àö¬•s normal rhythmic contraction is called?
A.	Heart stroke
B.	Cardiac arrest
C.	Arrhythmias
D.	Premature contraction
Answer» D. Premature contraction