Question

The P-Q interval is the time
​

Answer 1

Time for conduction from sinu atrial node across AV node

Explanation:

• The P-Q interval is the time for conduction of impulse from SA node to AV node and Purkinje fibres.
• P-Q interval should last from 0.12 and 0.20 seconds.
• A prolonged interval of PQ represents degradation of conduction system.
• This can be said to be a 1st, 2ndor 3rd degree AV block.