Highly specific technique for discriminating atrial fibrillation from atrial ...

COMPUTING AVERAGE CYCLE LENGTH TO
CYCLE LENGTH VARIATION

((i^)(E(|At-At|)+|At2-At3|+ +|AtN-1 -AtN|)))

FROM THE COMPUTED CYCLE LENGTHS

540

^

COMPARING COMPUTED AVERAGE CYCLE LENGTH
TO CYCLE LENGTH VARIATION TO ONE OR MORE
PRE-DETERMINED THRESHOLD VALUES
BASED ON THE AVERAGE CYCLE LENGTH

I Z°

ISSUING A COMMAND SIGNAL BASED ON
THE OUTCOME OF THE COMPARISON

FIG. 5A

C~ 550 )

DISCRIMINATING ATRIAL FIBRILLATION FROM ATRIAL FLUTTER BASED ON THE OUTCOME OF THE COMPARISON

580

ISSUING A COMMAND SIGNAL BASED ON THE OUTCOME OF DISCRIMINATION

590

PROVIDING THERAPY TO A HEART UPON RECEIVING THE COMMAND SIGNAL

FIG. 5B

( 570 )

1 585

1 CL

ISSUING A TIME DELAY BASED ON THE
OUTCOME OF DISCRIMINATION

^590

PROVIDING THERAPY TO A HEART UPON RECEIVING THE COMMAND SIGNAL

FIG. 7