	US 7,548,785 B2
	Collecting and analyzing sensed information as a trend of heart failure progression or regression
Steve Koh, South Pasadena, Calif. (US); Euljoon Park, Valencia, Calif. (US); and Gene A. Bornzin, Simi Valley, Calif. (US)
Assigned to Pacesetter, Inc., Sylmar, Calif. (US)
Filed on Jun. 10, 2004, as Appl. No. 10/866,422.
Prior Publication US 2005/0277992 A1, Dec. 15, 2005
Int. Cl. A61N 1/362 (2006.01)

U.S. Cl. 607—18 [607/19; 600/509]

8 Claims

1. A method comprising:

detecting and binning a value of a first physiological measure;

detecting and binning a value of a second physiological measure the second physiological measure being different from the first physiological measure;

repeating the detecting and binning one or more times;

multiplying a bin count for the first physiological measure bins with a corresponding bin count of the second physiological measure bins to form a product of each of the bin count of the first physiological measure bins and the corresponding bin count of the second physiological measure bins;

summing the products of the bin counts of the first physiological measure bins and the bin counts of the second physiological measure bins to provide a cross-correlation index; and

adjusting a cardiac stimulation therapy delivered by an implantable medical device based at least in part on the cross-correlation index.