SECOND DEGREE ATRIOVENTRICULAR (AV) BLOCK MOBITZ TYPE 2:

A disorder of the atrioventricular (AV) node in which there is intermittent complete failure of atrial impulses to conduct to from the atria to the ventricles.

•AV node works some of the time, but can suddenly stop working and drop QRS complexes.

•P to P interval:

•PR interval:

•RR interval:

•Dropped QRS complex.

•(Sometimes there can be multiple P wave without QRS complexes intermingled with occasional P waves that conduct through the AV node and result in QRS complexes).