Anatomy II: electrical activity of heart

What doed ectopic mean

out of usual location

what heart rate does the SA node initiate

60-100 bpm

What heart rate doe the AV node initiate?

40-60 bpm

What heart rate do that AV bundle and purkinje fiber initiate

20-40 bpm

What is an electrocardiogram (ECG/EKG)

tracing or diagram of electrical activity in the heart

What is a junctional rhythm

hidden P wave, SA node not working, impulse initiated by AV node or bundle

What is fibrillation

What areas of the heart contract independently “quivering contraction”

Complications of A fib

Clotting, risk of clots loosening leading to stroke or pulmonary embolism

Treatment of A fib

blood thinner

What is usual the cause of V fib

AV node not working

What is more dangerous A fib or V fib

V fib

What is heart block

impulse not transmitted from atria to ventricle, contraction is not coordinated

When does heart block occur

depends (every other, some, or every)

What is show on a EKG with heart block

extra P wave

what is usually the problem with heart block

AV node (does not receive the impulse)