What is av block?

Milliseconds. When there is a delay in conduction between the atria and ventricles, av block is present. If the delay exceeds 200 milliseconds, 1st degree block is present. If delay progresses to intermittent interruption of conduction, 2nd degree block is present. If there is complete interruption, so the atrial and ventricle beat independently, 3rd degree block is present.
Rhythm problem. Av block is atrioventricular block. The heart beats in a synchronized manner because we have an electrical system. The generator of the electical pulses is the av node. If this becomes "sick" there is no impulse generated or there are other malfuncitons of the av node or the electrical pathways and the hear may slow to dangerous levels. A pacemaker may be needed. A cardiologist is needed.

Related Questions

Please can you explain what atrial flutter with variable av block compatible with a bundle branch block. Possible inferior infarction, probably old is?

Very omplex. Atrial flutter, abnormal rhythm of the heart beat. Electrical impulses from the atria go thru the av node to ventricles. When there is blockage of those transmissions it can vary in degree and regularity. It can be difficult to differentiate from a bundle branch block. An inferior infarction is damage to the bottom of the heart by blockage of flow thru a coronary artery and occurred long ago.
A lot here. Abnormal ekg suggesting atrial arrhythmia, conduction delay and possible old heart attack. Talk to a cardiologist please!
ECG interpretation. Atrial flutter: your heart rhythm is abnormal (the atria are contracting very rapidly); variable block: there are a variable number of atrial contractions for every ventricular contraction. A bundle branch block: the ECG complex representing each ventricular contraction is widened due to a block of one branch of your heart's conduction system. Q waves on the ECG suggest an infarct (? Age).