Question

1. What do multiple P waves before the QRS complex on an EKG indicate?

   		Ventricular impulses to the atria are being slowed
   		Atria are depolarizing faster than the ventricles
   		Atrial impulses to the ventricles are being slowed
   		Ventricles are depolarizing faster than the atria

Answer 1

Multiple P waves before the QRS complex on an EKG indicate Atrial impulses to the ventricles are being slowed.

Normally there is very little delay of impulses in atria. It is about 120 milliseconds to 200 milliseconds which allows atria to contract but if there is a delay of impulses in atria more than 200 milliseconds and any disturbances in impulse transmission called AV block.

AV(Atrioventricular Block) is of 3 types; First degree, Second Degree, and Third degree or complete heart block.

Answer - Atrial impulses to the ventricles are being slowed.