POPULAR CARDIOLOGISTS IN SILK BOARD
Atrial tachycardia with block
Atrial tachycardia with block (paroxysmal atrial tachycardia (PAT) with block) is also an
(automatic, ectopic) atrial tachycardia but its P waves are usually smaller (often
discernible only in lead V1) and faster. As a result of this high rate, AV block—mostly 2:1, but
often variable—is usually present prior to any exposure to drugs or vagal manoeuvres ).
inthe past this was one of the classic manifestations of digoxin toxicity. It can be difficult
from other atrial rhythms such as AF, flutter and even sinus rhythm ..