i got this qn here that i manage to figure out is a 2nd degree AV blockage but i am not sure if its a type 1 or type 2 so i'm kinda asking for help here ...but anyway here it goes...my 5 min vet consult textbook isnt much help "There is a distinct first (S1) and second (S2) heart sound without signs of murmurs or splitting but the S1 to S1 interval is erratic and irregular. The heart rate is slightly low but not sufficient to class it as a bradychardia. Palpation of the carotid shows that the pulse rate matches the heart sounds. There is no sign of oedema or jugular distention. The owner has not noticed increase in tiredness of the cat, although there may be a reduced frequency of exercise"